CTNF 18/099,986 CTNF 90536 Notice of Pre-AIA or AIA Status 07-03-aia AIA 15-10-aia The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA. In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. DETAILED ACTION This Office action is in response to the application filed on January 23, 2023. Foreign Priority 02-26 AIA Receipt is acknowledged of certified copies of papers submitted under 35 U.S.C. 119 (a)-(d), which papers have been placed of record in the file. Specification The title is objected to for failure to be sufficiently descriptive. 06-31 AIA The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. The applicant's cooperation is requested in correcting any errors of which the applicant may become aware in the specification. Claim Objections 07-29-01 AIA Claim s 1-2, 8, and 13-14 are objected to because of the following informalities: Claim 1 line 11, “tip ends of the first dummy electrodes” should be --tip ends of the plurality of first dummy electrodes-- line 15, “tip ends of the second dummy electrodes” should be --tip ends of the plurality of second dummy electrodes-- line 16, “tip ends of the second electrode fingers” should be --tip ends of the plurality of second electrode fingers-- lines 21-22, “the first and second electrode fingers” should be --the plurality first and second electrode fingers-- line 24, “the second electrode fingers” should be - the plurality of second electrode fingers-- lines 25-26, “the first electrode fingers” should be --the plurality of first electrode fingers-- line 26, “the first electrode fingers” should be --the plurality of first electrode fingers-- lines 27-28, “the second electrode finger” should be --a second electrode finger-- line 28, “the pair” should be –the pair of second electrode fingers-- lines 36-37, “tip end of a second dummy electrode included in the second dummy electrodes” should be --tip end of a second dummy electrode included in the plurality of second dummy electrodes-- Claim 2 line 6 & line 21, “the first electrode fingers” should be --the plurality of first electrode fingers-- lines 7-8 & lines 19-20, “the second electrode fingers” should be --a second electrode finger-- line 29, “the first dummy electrodes” should be --the plurality of first dummy electrodes-- Claim 8 line 11 & lines 33-34, “the first dummy electrodes” should be --the plurality of first dummy electrodes-- line 12 & lines 37-38, “the first electrode fingers” should be --the plurality of first electrode fingers-- line 15 & lines 46-47, “the second dummy electrodes” should be --the plurality of second dummy electrodes-- line 16 & line 39, “the second electrode fingers” should be --the plurality of second electrode fingers-- Claim 13 line 6 & line 21, “the first electrode fingers” should be --the plurality of first electrode fingers-- lines 7-8 & lines 19-20, “the second electrode fingers” should be --the plurality of second electrode fingers-- lines 28-29 & line 21, “the first dummy electrodes” should be --the plurality of first dummy electrodes-- Claim 14 line 6 & line 21, “the first electrode fingers” should be --the plurality of first electrode fingers-- lines 7-8 & lines 19-20, “the second electrode fingers” should be --the plurality of second electrode fingers-- lines 28-29 & line 21, “the first dummy electrodes” should be --the plurality of first dummy electrodes -- Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. Claims 1-19 are rejected under 35 U.S.C. 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the applicant regards as the invention. In Claims 1-2, 8, and 13-14 , the reference to a “plurality”, “a pair,” and “any” first or second electrode fingers followed by a reference to “the” first or second electrode finger in the singular creates an ambiguity because it is not clear whether it refers to any finger in the plurality, or any finger in the pair, or a specific finger in particular. The shift from multiple to dual to singular reference without a clear differentiation renders the term indefinite. Therefore, the examiner has understood the term to refer to any electrode finger. Claim Rejections - 35 USC § 102 07-07-fti The following is a quotation of the appropriate paragraphs of AIA 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – 07-08-aia AIA (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-19 are rejected under AIA 35 U.S.C. 102(a)(1) as being anticipated by Nakazawa (U.S. Publication No. 20210328572; hereinafter “Nakazawa”). Regarding claim 1 , Nakazawa discloses an acoustic wave device, comprising: a piezoelectric substrate (Figs. 1/10, 2 ; [0023]); and an IDT electrode (Figs. 1/10, 3 ; [0025]) on the piezoelectric substrate (Figs. 1/10, 2 ; [0023]); wherein the IDT electrode (Figs. 1/10, 3 ; [0025]) includes: a first busbar (Figs. 1/10, 14 ; [0025]); a second busbar (Figs. 1/10, 15 ; [0025]) separated from (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]); a plurality of first electrode fingers (Figs. 1/10, 16 ; [0025]) including one end (Figs. 1/10, one end of 16 ; [0025]) connected to (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]), a plurality of second electrode fingers (Figs. 1/10, 17 ; [0025]) including one end (Figs. 1/10, one end of 17 ; [0025]) connected to (Fig. 1) the second busbar (Figs. 1/10, 15 ; [0025]); a plurality of first dummy electrodes (Figs. 1/10, 18 ; [0026]) connected to (Fig. 1) the second busbar (Figs. 1/10, 15 ; [0025]), tip ends (Figs. 1/10, tip ends of 18 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the first dummy electrodes (Figs. 1/10, 18 ; [0026]) facing (Fig. 1) tip ends (Figs. 1/10, tip ends of 16 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the first electrode fingers (Figs. 1/10, 16 ; [0025]) with a second gap (Figs. 1/10, G2 ; [0025]) interposed therebetween (Fig. 1); and a plurality of second dummy electrodes (Figs. 1/10, 19 ; [0026]) connected to (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]), tip ends (Figs. 1/10, tip ends of 19 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the second dummy electrodes (Figs. 1/10, 19 ; [0026]) facing (Fig. 1) tip ends (Figs. 1/10, tip ends of 17 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the second electrode fingers (Figs. 1/10, 17 ; [0025]) with a first gap (Figs. 1/10, G1 ; [0025]) interposed therebetween (Fig. 1); and when a first virtual line (Figs. 1/10, first virtual line connecting tip ends of 17 ) connecting (Fig. 1) the tip ends (Figs. 1/10, tip ends of 17 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the plurality of second electrode fingers (Figs. 1/10, 17 ; [0025]) is inclined (Figs. 1/10, first virtual line connecting tip ends of 17 and inclined wrt direction orthogonal to 16-17’s extension direction ) with respect to (Figs. 1/10) an acoustic wave propagation direction (Figs. 1/10, direction orthogonal to 16-17’s extension direction ) that is a direction orthogonal (Figs. 1/10, direction orthogonal to 16-17’s extension ) to a direction (Figs. 1/10, direction of 16 and 17’s extension ) in which the first (Figs. 1/10, 16 ; [0025]) and second electrode fingers (Figs. 1/10, 17 ; [0025]) extend (Figs. 1/10, direction of 16 and 17’s extension ), a distance (Figs. 1/10, distance between tip end of 17 on one side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip ends of 17 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of a second electrode finger (Figs. 1/10, 17 ; [0025]) on (Fig. 1) one side (Figs. 1/10, one side of a pair of 17 ; [0025]), of a pair of second electrode fingers (Figs. 1/10, pair of 17 ; [0025]) included in (Fig. 1) the second electrode fingers (Figs. 1/10, 17 ; [0025]) adjacent (Figs. 1/10, pair of 17 adjacent to 16 ; [0025]) to any (Fig. 1) first electrode finger (Figs. 1/10, 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]), and a base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]) is shorter (Fig. 1) than (Fig. 1) a distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]) on (Fig. 1) an other side (Figs. 1/10, an other side of a pair of 17 ; [0025]) of the pair (Figs. 1/10, pair of 17 ; [0025]) and the base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), and a direction (Figs. 1/10, inclination direction ) toward a direction (Figs. 1/10, inclination direction ) in which the distance (Figs. 1/10, distance between tip end of 17 on one side of pair of 17 and a base end of 16 ) is longer (Fig. 1) in the first virtual line (Figs. 1/10, first virtual line connecting tip ends of 17 ) is an inclination direction (Figs. 1/10, inclination direction ); the acoustic wave device (Figs. 1/10, 1 ) further comprises at least one of: a projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) protruding toward (Fig. 10) the first electrode finger (Figs. 1/10, 16 ; [0025]) or the second electrode finger (Figs. 1/10, 17 ; [0025]), in at least one of a side (Figs. 1/10, side in inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) at a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) at a tip end (Figs. 1/10, tip end of 19 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a second dummy electrode (Figs. 1/10, 19 ; [0026]) included in (Fig. 1) the second dummy electrodes (Figs. 1/10, 19 ; [0026]), a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) of the first electrode finger (Figs. 1/10, 16 ; [0025]) positioned on (Fig. 1) an extension (Figs. 1/10, extension in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 19 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second dummy electrode (Figs. 1/10, 19 ; [0026]), and a side (Figs. 1/10, side in inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) of the first electrode finger (Figs. 1/10, 16 ; [0025]) positioned on (Fig. 1) an extension (Figs. 1/10, extension in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]); and a recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) provided in (Fig. 1) at least one of a side opposite (Figs. 1/10, at least one of a side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) at the tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), a side (Figs. 1/10, side in inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) at the tip end (Figs. 1/10, tip end of 19 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second dummy electrode (Figs. 1/10, 19 ; [0026]), a side (Figs. 1/10, side in inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) of the first electrode finger (Figs. 1/10, 16 ; [0025]) positioned on (Fig. 1) the extension (Figs. 1/10, extension in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 19 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second dummy electrode (Figs. 1/10, 19 ; [0026]), and a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) of the first electrode finger (Figs. 1/10, 16 ; [0025]) positioned on (Fig. 1) the extension (Figs. 1/10, extension in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]). Regarding claim 2 , Nakazawa discloses the acoustic wave device according to Claim 1, wherein a third virtual line (Figs. 1/10, third virtual line connecting tip ends of 16 ) connecting (Fig. 1) the tip ends (Figs. 1/10, tip ends of 16 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the plurality of first electrode fingers (Figs. 1/10, 16 ; [0025]) is inclined (Figs. 1/10, inclined wrt acoustic wave propagation direction ) with respect to (Figs. 1/10) the acoustic wave propagation direction (Figs. 1/10, acoustic wave propagation direction ), a distance (Figs. 1/10, distance between tip end of 16 on one side of pair of 16 and a base end of 17 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a first electrode finger (Figs. 1/10, 16 ; [0025]) on (Fig. 1) one side (Figs. 1/10, one side of a pair of 16 ; [0025]), of a pair of first electrode fingers (Figs. 1/10, pair of 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]) adjacent (Figs. 1/10, pair of 16 adjacent to 17 ; [0025]) to any (Fig. 1) second electrode finger (Figs. 1/10, 17 ; [0025]) included in (Fig. 1) the second electrode fingers (Figs. 1/10, 17 ; [0025]), and a base end (Figs. 1/10, base end of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]) is shorter (Fig. 1) than (Fig. 1) a distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]) on an other side (Figs. 1/10, an other side of a pair of 16 ; [0025]) of the pair (Figs. 1/10, pair of 16 ; [0025]) and the base end (Figs. 1/10, base end of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), a side closer (Figs. 1/10, side closer to 16 ; [0025]) to the first electrode finger (Figs. 1/10, 16 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) is shorter (Fig. 1), of sides (Figs. 1/10, of sides of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), and a side closer (Figs. 1/10, a side close to 16 ; [0025]) to the first electrode finger (Figs. 1/10, 16 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 19 facing 17 aka a first side ; [0026]) of the second dummy electrode (Figs. 1/10, 19 ; [0026]) facing (Fig. 1) the second electrode finger (Figs. 1/10, 17 ; [0025]), are each a first side (Figs. 1/10, sides of 19 facing 17 aka a first side ; [0026]), and a side opposite (Figs. 1/10, side opposite sides of 19 facing 17 aka a second side ) to the first side (Figs. 1/10, sides of 19 facing 17 aka a first side ; [0026]) is a second side (Figs. 1/10, side opposite sides of 19 facing 17 aka a second side ); a distance (Figs. 1/10, distance between tip end of 17 on one side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a second electrode finger (Figs. 1/10, 17 ; [0025]) on one side (Figs. 1/10, one side of a pair of 17 ; [0025]), of a pair (Figs. 1/10, pair of 17 ; [0025]) of second electrode fingers (Figs. 1/10, 17 ; [0025]) included in (Fig. 1) the second electrode fingers (Figs. 1/10, 17 ; [0025]) adjacent (Figs. 1/10, pair of 17 adjacent to 16 ; [0025]) to any (Fig. 1) first electrode finger (Figs. 1/10, 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]), and a base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]) is shorter (Fig. 1) than (Fig. 1) a distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]) on an other side (Figs. 1/10, an other side of a pair of 17 ; [0025]) of the pair (Figs. 1/10, pair of 17 ; [0025]) and the base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), a side closer (Figs. 1/10, side closer to 17 ; [0025]) to the second electrode finger (Figs. 1/10, 17 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), and a side closer (Figs. 1/10, side closer to 17 ; [0025]) to the second electrode finger (Figs. 1/10, 17 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 18 facing 16 aka a second side ; [0025]) of a first dummy electrode (Figs. 1/10, 18 ; [0026]) included in (Fig. 1) the first dummy electrodes (Figs. 1/10, 18 ; [0026]) facing (Fig. 1) the first electrode finger (Figs. 1/10, 16 ; [0025]), are each a second side (Figs. 1/10, sides of 18 facing 16 aka a second side ; [0025]), and a side opposite (Figs. 1/10, first side aka side opposite to sides of 18 facing 16 aka a second side ) to the second side (Figs. 1/10, sides of 18 facing 16 aka a second side ; [0025]) is a first side (Figs. 1/10, first side aka side opposite to sides of 18 facing 16 aka a second side ); a line (Figs. 1/10, line connecting centers of G2 aka fourth virtual line ; [0025]) connecting (Fig. 1) respective centers (Figs. 1/10, centers of G2 ; [0025]) of second gaps (Figs. 1/10, G2 ; [0025]), each (Figs. 1/10, G2 ; [0025]) of which is the second gap (Figs. 1/10, G2 ; [0025]) interposed between (Fig. 1) the tip ends (Figs. 1/10, tip ends of 16-19 ; Fig. 10, protruding and recessed portions of 49 ; [0025]), is a fourth virtual line (Figs. 1/10, line connecting centers of G2 aka fourth virtual line ; [0025]); and the acoustic wave device (Figs. 1/10, 1 ) further comprises at least one of: a recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) provided in (Fig. 1) at least one of a side in (Figs. 1/10, side in inclination direction ) the inclination direction (Figs. 1/10, inclination direction ) at a tip end of the first electrode finger (Figs. 1/10, 16 ; [0025]), a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) at a tip end (Figs. 1/10, tip end of 18 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first dummy electrode (Figs. 1/10, 18 ; [0026]), a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) of the second electrode finger (Figs. 1/10, 17 ; [0025]) positioned on (Fig. 1) an extension opposite (Figs. 1/10, extension opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 18 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first dummy electrode (Figs. 1/10, 18 ; [0026]), and a side (Figs. 1/10, side in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) of the second electrode finger (Figs. 1/10, 17 ; [0025]) positioned on (Fig. 1) an extension opposite (Figs. 1/10, extension opposite inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]); and a projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) protruding toward (Fig. 10) the first electrode finger (Figs. 1/10, 16 ; [0025]) or the second electrode finger (Figs. 1/10, 17 ; [0025]), in at least one of a side opposite (Figs. 1/10, at least one of a side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) at the tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), a side (Figs. 1/10, side in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) at the tip end (Figs. 1/10, tip end of 18 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first dummy electrode (Figs. 1/10, 18 ; [0026]), a side (Figs. 1/10, side in the inclination direction ) in the inclination direction (Figs. 1/10, inclination direction ) of the second electrode finger (Figs. 1/10, 17 ; [0025]) positioned on (Fig. 1) the extension opposite (Figs. 1/10, extension opposite inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 18 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first dummy electrode (Figs. 1/10, 18 ; [0026]), and a side opposite (Figs. 1/10, side opposite to inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) of the second electrode finger (Figs. 1/10, 17 ; [0025]) positioned on (Fig. 1) the extension opposite (Figs. 1/10, extension opposite inclination direction ) to the inclination direction (Figs. 1/10, inclination direction ) from the tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]). Regarding claim 3 , Nakazawa discloses the acoustic wave device according to Claim 1, wherein the piezoelectric substrate (Figs. 1/10, 2 ; [0023]) includes a piezoelectric film (Figs. 1/10, 2 ; [0023]), and a high acoustic velocity material layer (Figs. 1/10, 2 ; [0023]) made (Figs. 1/10, 2 ; [0023]) of a high acoustic velocity material (Figs. 1/10, 2 ; [0023]) by which an acoustic velocity of a bulk wave propagating through (Figs. 1/10, acoustic velocity of bulk wave propagating through 2 ; [0023]) the high acoustic velocity material layer (Figs. 1/10, 2 ; [0023]) is higher than (Figs. 1/10, 2 ; [0023]) an acoustic velocity of an acoustic wave propagating through (Figs. 1/10, acoustic velocity of bulk wave propagating through 2 ; [0023]; Examiner’s Note: Applicant discloses SiO2 exhibits these properties and the prior art of record discloses SiO2.) the piezoelectric film (Figs. 1/10, 2 ; [0023]). Regarding claim 4 , Nakazawa discloses the acoustic wave device according to Claim 3, further comprising a low acoustic velocity material layer (Figs. 1/10, 2 ; [0023] – “AlN” ) laminated (Figs. 1/10, 2 ; [0023]) between (Figs. 1/10, 2 ; [0023]) the high acoustic velocity material layer (Figs. 1/10, 2 ; [0023]) and the piezoelectric film (Figs. 1/10, 2 ; [0023]), and made (Figs. 1/10, 2 ; [0023]) of a low acoustic velocity material (Figs. 1/10, 2 ; [0023]) by which an acoustic velocity of a bulk wave propagating through (Figs. 1/10, acoustic velocity of a bulk wave propagating through 2 ; [0023])the low acoustic velocity material layer (Figs. 1/10, 2 ; [0023]) is lower than (Figs. 1/10, 2 ; [0023]) an acoustic velocity of a bulk wave propagating through (Figs. 1/10, acoustic velocity of a bulk wave propagating through 2 ; [0023]) the piezoelectric film (Figs. 1/10, 2 ; [0023]). Regarding claim 5 , Nakazawa discloses the acoustic wave device according to Claim 3, wherein the high acoustic velocity material layer (Figs. 1/10, 2 ; [0023]; Examiner’s Note: Applicant discloses SiO2 exhibits these properties and the prior art of record discloses SiO2.) is a high acoustic velocity support substrate (Figs. 1/10, 2 ; [0023]; Examiner’s Note: Applicant discloses SiO2 exhibits these properties and the prior art of record discloses SiO2.) made of the high acoustic velocity material (Figs. 1/10, 2 ; [0023]; Examiner’s Note: Applicant discloses SiO2 exhibits these properties and the prior art of record discloses SiO2.). Regarding claim 6 , Nakazawa discloses the acoustic wave device according to Claim 1, wherein the piezoelectric substrate (Figs. 1/10, 2 ; [0023]) is a piezoelectric substrate (Figs. 1/10, 2 ; [0023]) made of a piezoelectric single crystal (Figs. 1/10, 2 ; [0023]). Regarding claim 7 , Nakazawa discloses the acoustic wave device according to Claim 6, wherein the piezoelectric single crystal (Figs. 1/10, 2 ; [0023]) is a LiTaO 3 (Figs. 1/10, 2 ; [0023]). Regarding claim 8 , Nakazawa discloses an acoustic wave device, comprising: a piezoelectric substrate (Figs. 1/10, 2 ; [0023]); and an IDT electrode (Figs. 1/10, 3 ; [0025]) on the piezoelectric substrate (Figs. 1/10, 2 ; [0023]); wherein the IDT electrode (Figs. 1/10, 3 ; [0025]) includes: a first busbar (Figs. 1/10, 14 ; [0025]); a second busbar (Figs. 1/10, 15 ; [0025]) separated from (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]); a plurality of first electrode fingers (Figs. 1/10, 16 ; [0025]) including one end (Figs. 1/10, end of 16 connected to 14 ; [0025]) connected to (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]), a plurality of second electrode fingers (Figs. 1/10, 17 ; [0025]) including one end (Figs. 1/10, end of 17 connected to 15 ; [0025]) connected to (Fig. 1) the second busbar (Figs. 1/10, 15 ; [0025]); a plurality of first dummy electrodes (Figs. 1/10, 18 ; [0026]) connected to (Fig. 1) the second busbar (Figs. 1/10, 15 ; [0025]), tip ends (Figs. 1/10, tip ends of 18 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the first dummy electrodes (Figs. 1/10, 18 ; [0026]) facing (Fig. 1) tip ends (Figs. 1/10, tip ends of 16 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the first electrode fingers (Figs. 1/10, 16 ; [0025]) with a second gap (Figs. 1/10, G2 ; [0025]) interposed therebetween (Fig. 1); and a plurality of second dummy electrodes (Figs. 1/10, 19 ; [0026]) connected to (Fig. 1) the first busbar (Figs. 1/10, 14 ; [0025]), tip ends (Figs. 1/10, tip ends of 19 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the second dummy electrodes (Figs. 1/10, 19 ; [0026]) facing (Fig. 1) tip ends (Figs. 1/10, tip ends of 17 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the second electrode fingers (Figs. 1/10, 17 ; [0025]) with a first gap (Figs. 1/10, G1 ; [0025]) interposed therebetween (Fig. 1); a first virtual line line (Figs. 1/10, first virtual line connecting tip ends of 17 ) connecting (Fig. 1) the tip ends (Figs. 1/10, tip ends of 17 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the plurality of second electrode fingers (Figs. 1/10, 17 ; [0025]) is inclined (Figs. 1/10, first virtual line connecting tip ends of 17 and inclined wrt direction orthogonal to 16-17’s extension direction ) with respect to (Fig. 1) an acoustic wave propagation direction (Figs. 1/10, direction orthogonal to 16-17’s extension direction ) that is a direction orthogonal (Figs. 1/10, direction orthogonal to 16-17’s extension ) to a direction (Figs. 1/10, direction of 16 and 17’s extension ) in which the first (Figs. 1/10, 16 ; [0025]) and second electrode fingers (Figs. 1/10, 17 ; [0025]) extend (Figs. 1/10, direction of 16 and 17’s extension ), a distance (Figs. 1/10, distance between tip end of 17 on one side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a second electrode finger (Figs. 1/10, 17 ; [0025]) on (Fig. 1) one side (Figs. 1/10, one side of a pair of 17 ; [0025]), of a pair of second electrode fingers (Figs. 1/10, pair of 17 ; [0025]) included in (Fig. 1) the second electrode fingers (Figs. 1/10, 17 ; [0025]) adjacent (Figs. 1/10, pair of 17 adjacent to 16 ; [0025]) to any (Fig. 1) first electrode finger (Figs. 1/10, 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]), and a base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]) is shorter (Fig. 1) than (Fig. 1) a distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 17 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]) on (Fig. 1) an other side (Figs. 1/10, an other side of a pair of 17 ; [0025]) of the pair (Figs. 1/10, pair of 17 ; [0025]) and the base end (Figs. 1/10, base end of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), a side closer (Figs. 1/10, side closer to 17 ; [0025]) to the second electrode finger (Figs. 1/10, 17 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 16 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]), and a side closer (Figs. 1/10, side closer to 17 ; [0025]) to the second electrode finger (Figs. 1/10, 17 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 17 on an other side of pair of 17 and a base end of 16 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 18 facing 16 aka a first side ; [0025]) of a first dummy electrode (Figs. 1/10, 18 ; [0026]) included in (Fig. 1) the first dummy electrodes (Figs. 1/10, 18 ; [0026]) facing (Fig. 1) the first electrode finger (Figs. 1/10, 16 ; [0025]), are each a first side (Figs. 1/10, sides of 18 facing 16 aka a first side ; [0025]), and a side opposite (Figs. 1/10, second side aka side opposite to sides of 18 facing 16 aka a first side ) to the first side (Figs. 1/10, sides of 18 facing 16 aka a first side ; [0025]) is a second side (Figs. 1/10, second side aka side opposite to sides of 18 facing 16 aka a first side ); a distance (Figs. 1/10, distance between tip end of 16 on one side of pair of 16 and a base end of 17 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a first electrode finger (Figs. 1/10, 16 ; [0025]) on (Fig. 1) one side (Figs. 1/10, one side of a pair of 16 ; [0025]), of a pair of first electrode fingers (Figs. 1/10, pair of 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]) adjacent (Figs. 1/10, pair of 16 adjacent to 17 ; [0025]) to any (Fig. 1) second electrode finger (Figs. 1/10, 17 ; [0025]) included in (Fig. 1) the second electrode fingers (Figs. 1/10, 17 ; [0025]), and a base end (Figs. 1/10, base end of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]) is shorter (Fig. 1) than (Fig. 1) a distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of the first electrode finger (Figs. 1/10, 16 ; [0025]) on an other side (Figs. 1/10, an other side of a pair of 16 ; [0025]) of the pair (Figs. 1/10, pair of 16 ; [0025]) and the base end (Figs. 1/10, base end of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), a side closer (Figs. 1/10, side closer to 16 ; [0025]) to the first electrode finger (Figs. 1/10, 16 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) is shorter (Fig. 1), of sides (Figs. 1/10, of sides of 17 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), and a side closer (Figs. 1/10, a side close to 16 ; [0025]) to the first electrode finger (Figs. 1/10, 16 ; [0025]) for which (Fig. 1) the distance (Figs. 1/10, distance between tip end of 16 on an other side of pair of 16 and a base end of 17 ) is shorter (Fig. 1), of sides (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) of a second dummy electrode (Figs. 1/10, 19 ; [0026]) included in (Fig. 1) the second dummy electrodes (Figs. 1/10, 19 ; [0026]) facing (Fig. 1) the second electrode finger (Figs. 1/10, 17 ; [0025]), are each a second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]), and a side opposite (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) to the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) is a first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]); a line (Figs. 1/10, line connecting centers of G1 aka second virtual line ; [0025]) connecting (Fig. 1) respective centers (Figs. 1/10, centers of G1 ; [0025]) of first gaps (Figs. 1/10, G1 ; [0025]), each of which being the first gap (Figs. 1/10, G1 ; [0025]) interposed therebetween (Fig. 1) the tip ends (Figs. 1/10, tip ends of 16-19 ; Fig. 10, protruding and recessed portions of 49 ; [0025]), is a second virtual line (Figs. 1/10, line connecting centers of G1 aka second virtual line ; [0025]); of a portion closer (Figs. 1/10, a portion closer to G1 ; [0025]) to the first gap (Figs. 1/10, G1 ; [0025]) of the second dummy electrode (Figs. 1/10, 19 ; [0026]), a region closer (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]) to the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) is a first region (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]) and a region closer (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]) to the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) is a second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]), of a portion closer (Figs. 1/10, portion closer to G1 ; [0025]) to the first gap (Figs. 1/10, G1 ; [0025]) of the second electrode finger (Figs. 1/10, 17 ; [0025]), a region closer (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) to the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) is a fifth region (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) and a region closer (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]) to the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) is a sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and in the first electrode finger (Figs. 1/10, 16 ; [0025]) that is adjacent (Figs. 1/10, 16 that is adjacent ; [0025]), in a portion closer (Figs. 1/10, portion closer to 14 ; [0025]) to the first busbar (Figs. 1/10, 14 ; [0025]) with respect to the second virtual line (Figs. 1/10, line connecting centers of G1 aka second virtual line ; [0025]), a region closer (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) to the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) is a third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) and a region closer (Figs. 1/10, fourth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]) to the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) is a fourth region (Figs. 1/10, fourth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and in the first electrode finger (Figs. 1/10, 16 ; [0025]), in a portion closer (Figs. 1/10, portion closer to 15 ; [0025]) to the second busbar (Figs. 1/10, 15 ; [0025]) with respect to the second virtual line (Figs. 1/10, line connecting centers of G1 aka second virtual line ; [0025]), a region closer (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) to the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) is a seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) and a region closer (Figs. 1/10, eighth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]) to the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) is an eighth region (Figs. 1/10, eighth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]); in the first region (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]), the third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and the eighth region (Figs. 1/10, eighth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), an angle (Figs. 1/10, angle defined by first side is side opposite to sides of 19 facing 17 aka a second side OR sides of 19 facing 17 aka a second side positioned in each region ; [0026]) defined by (Fig. 1) the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) or the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) in each region (Fig. 1), and the first virtual line (Figs. 1/10, angle defined by first side is side opposite to sides of 19 facing 17 aka a second side OR sides of 19 facing 17 aka a second side positioned in each region ; [0026]) is an acute angle (Figs. 1/10, angle defined by first side is side opposite to sides of 19 facing 17 aka a second side OR sides of 19 facing 17 aka a second side positioned in each region ; [0026]), and in the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fourth region (Figs. 1/10, fourth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fifth region (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), and the seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), an angle (Figs. 1/10, angle defined by first side is side opposite to sides of 19 facing 17 aka a second side OR sides of 19 facing 17 aka a second side positioned in each region ; [0026]) defined by (Fig. 1) the first side (Figs. 1/10, first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) or the second side (Figs. 1/10, sides of 19 facing 17 aka a second side ; [0026]) positioned in (Fig. 1) each region (Fig. 1), and the first virtual line (Figs. 1/10, first virtual line connecting tip ends of 17 ) is an obtuse angle (Figs. 1/10, angle defined by first side is side opposite to sides of 19 facing 17 aka a second side OR sides of 19 facing 17 aka a second side positioned in each region ; [0026]); and at least one of a projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) in at least one region of the first region (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]), the third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and the eighth region (Figs. 1/10, eighth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and a recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) in at least one region of the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fourth region (Figs. 1/10, fourth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fifth region (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), and the seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) is provided (Figs. 1/10). Regarding claim 9 , Nakazawa discloses the acoustic wave device according to Claim 8, wherein an intersection region (Figs. 1/10, region where 16 and 17 overlap when viewed from the acoustic wave propagation direction ; [0025]) that is a region (Figs. 1/10, region where 16 and 17 overlap when viewed from the acoustic wave propagation direction ; [0025]) in which the first electrode finger (Figs. 1/10, 16 ; [0025]) and the second electrode finger (Figs. 1/10, 17 ; [0025]) overlap (Figs. 1/10) when viewed (Figs. 1/10) in the acoustic wave propagation direction (Figs. 1/10, acoustic wave propagation direction ) includes a central region (Figs. 1/10, region at center in an extension direction of 16 and 17 ; [0025]) positioned (Figs. 1/10) at a center (Figs. 1/10, center ) in the direction (Figs. 1/10, extension direction of 16 and 17 ) in which the first and second electrode fingers (Figs. 1/10, 17 ; [0025]) extend (Figs. 1/10), and first and second low acoustic velocity regions (Figs. 1/10, first and second AlN regions ; [0023]) provided on (Figs. 1/10) both outer side portions (Figs. 1/10, outer side portions of region at center in an extension direction of 16 and 17 ; [0025]) of the central region (Figs. 1/10, region at center in an extension direction of 16 and 17 ; [0025]); and the recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) or the projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) is provided in (Figs. 1/10) the first and second low acoustic velocity regions (Figs. 1/10, first and second AlN regions ; [0023]). Regarding claim 10 , Nakazawa discloses the acoustic wave device according to Claim 8, further comprising: the projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) provided in (Figs. 1/10) at least one region of the first region (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]), the third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), and the eighth region (Figs. 1/10, eighth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]); and the recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) provided in (Figs. 1/10) at least one region of the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fourth region (Figs. 1/10, fourth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]), the fifth region (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), and the seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]). Regarding claim 11 , Nakazawa discloses the acoustic wave device according to Claim 10, further comprising: the recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) provided in (Figs. 1/10) the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]) and the fifth region (Figs. 1/10, fifth region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]); and the projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) provided in (Figs. 1/10) the first region (Figs. 1/10, first region aka a region closer to the first side, the first side being the side opposite to sides of 19 facing 17 aka a second side ; [0026]) and the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]). Regarding claim 12 , Nakazawa discloses the acoustic wave device according to Claim 11, wherein in at least one of a portion (Figs. 1/10, a portion in which 2 nd and 3 rd regions face each other ) in which the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]) and the third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) face each other (Figs. 1/10) in the acoustic wave propagation direction (Figs. 1/10, acoustic wave propagation direction ) and a portion (Figs. 1/10, a portion in which 6 th and 7 th regions face each other ) in which the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]) and the seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) face each other (Figs. 1/10) in the acoustic wave propagation direction (Figs. 1/10, acoustic wave propagation direction ), the recessed portion (Figs. 1/10; Fig. 10, recessed portion of 49 ) is provided in (Figs. 1/10) the second region (Figs. 1/10, second region aka a region closer to sides of 19 facing 17 aka a second side ; [0026]) and the seventh region (Figs. 1/10, seventh region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]), and the projecting portion (Figs. 1/10; Fig. 10, protruding portion of 49 ) is provided in (Figs. 1/10) the third region (Figs. 1/10, third region is a region closer to first side and first side is side opposite to sides of 19 facing 17 aka a second side ; [0026]) and the sixth region (Figs. 1/10, sixth region is a region closer to sides of 19 facing 17 aka a second side ; [0026]). Regarding claim 13 , Nakazawa discloses the acoustic wave device according to Claim 8, wherein a third virtual line (Figs. 1/10, virtual line connecting tip ends of 16 ) connecting (Fig. 1) the tip ends (Figs. 1/10, tip ends of 16 ; Fig. 10, protruding and recessed portions of 49 ; [0025]) of the plurality of first electrode fingers (Figs. 1/10, 16 ; [0025]) is inclined (Figs. 1/10) with respect to (Fig. 1) the acoustic wave propagation direction (Figs. 1/10, acoustic wave propagation direction ), a distance (Figs. 1/10, distance between tip end of 16 on one side of pair of 16 and a base end of 17 ) between (Fig. 1) a tip end (Figs. 1/10, tip end of 16 ; Fig. 10, protruding and recessed portion of 49 ; [0025]) of a first electrode finger (Figs. 1/10, 16 ; [0025]) on (Fig. 1) one side (Figs. 1/10, one side of a pair of 16 ; [0025]), of a pair of first electrode fingers (Figs. 1/10, pair of 16 ; [0025]) included in (Fig. 1) the first electrode fingers (Figs. 1/10, 16 ; [0025]) adjacent (Figs. 1/10, pair of 16 adjacent to 17 ; [0025]) to any (Fig. 1) second electrode finger (Figs. 1/10, 17 ; [0025