Prosecution Insights
Last updated: August 16, 2026
Application No. 18/725,964

INSULATOR, STATOR, AND MOTOR

Non-Final OA §103
Filed
Jan 02, 2025
Priority
Jan 24, 2022 — JP 2022-008911 +1 more
Examiner
ANDREWS, MICHAEL
Art Unit
Tech Center
Assignee
Komatsu Ltd.
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
1y 3m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
799 granted / 1242 resolved
+4.3% vs TC avg
Strong +25% interview lift
Without
With
+24.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
45 currently pending
Career history
1279
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
52.4%
+12.4% vs TC avg
§102
24.4%
-15.6% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1242 resolved cases

Office Action

§103
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This Office Action is responsive to the Applicant's communication filed 01 July 2024. In view of this communication, claims 1-7 are now pending in the application. Priority Receipt is acknowledged of papers submitted under 35 U.S.C. 119(a)-(d) or (f), 365(a) or (b), or 386(a), which papers have been placed of record in the file. Information Disclosure Statement The information disclosure statement(s) submitted on 01 July 2024 was/were filed before mailing of the first action on the merits. Accordingly, the information disclosure statement(s) is/are being considered by the examiner. Disclosure The title of the invention is not descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. The following title is suggested: Stator Insulator with Jumper Wire Grooves having Different Shapes. The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant's cooperation is requested in correcting any errors of which applicant may become aware in the specification. Claim Rejections - 35 USC § 103 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. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 1, 3, and 6-7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kimura et al. (US 2013/0115064 A1), hereinafter referred to as “Kimura”, in view of Hori et al. (US 2023/0208240 A1), hereinafter referred to as “Hori”. Regarding claim 1, Kimura discloses an insulator [21] disposed between a stator core [20] and a three-phase coil [23] wound around the stator core [20] (fig. 1-3; ¶ 0064-0068), the insulator [21] comprising: a main body section [21b] that covers a portion around which the coil [23] is wound in the stator core [20] and insulates the stator core [20] from the coil [23] (fig. 5; ¶ 0083); and a jumper wire holding section [21d] that is disposed on a radial direction outer side of the main body section [21b] and holds a jumper wire [23a,23b,23c] of the coil [23] (fig. 5-9; ¶ 0085, 0089-0097), and PNG media_image1.png 579 1278 media_image1.png Greyscale wherein the jumper wire holding section [21d] includes a first groove [21da] in which a jumper wire [23a] of a first-phase coil [A-phase] is housed, a second groove [21db] that is disposed on an axial direction other side with respect to the first groove [21da] and in which a jumper wire [23b] of a second-phase coil [B-phase] is housed, and a third groove [21dc] that is disposed on the axial direction other side with respect to the second groove [21db] and in which a jumper wire [23c] of a third-phase coil [C-phase] is housed (fig. 5-6; ¶ 0089-0097). Kimura does not disclose that the first groove [21da], the second groove [21db], and the third groove [21dc] are formed in different shapes. Hori discloses an insulator [300] comprising a jumper wire holding section [310] that includes a first groove [315A], a second groove [315B], and a third groove [315C] (fig. 4, 17; ¶ 0128, 0192), wherein the first groove [315A], the second groove [315B], and the third groove [315C] are formed in different shapes (fig. 17; ¶ 0192; the grooves “have different axial depths”, i.e. the widths of the grooves in the axial direction are different from one another). PNG media_image2.png 543 1146 media_image2.png Greyscale It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to form the grooves of Kimura having different shapes, e.g. different widths, as taught by Hori, in order to prevent contact between the crossover wires (¶ 0192 of Hori). Further, it has been held that a mere change in shape of a particular component of a device is a matter of design choice involving only routine skill in the art. In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966). Regarding claim 3, Kimura, in view of Hori, discloses the insulator [21] according to claim 1, as stated above, wherein Hori further discloses that the first groove [315A], the second groove [315B], and the third groove [315C] are different in widths in an axial direction (fig. 17; ¶ 0192; the grooves “have different axial depths”, i.e. the widths of the grooves in the axial direction are different from one another). Regarding claim 6, Kimura, in view of Hori, discloses a stator [10] of a motor [1] comprising the insulator [21] according to claim 1, as stated above; the stator core [20] to which the insulator [21] is attached (fig. 1-3; ¶ 0064-0065); and the coil [23] wound around the stator core [20] via the insulator [21] (¶ 0067-0068). Regarding claim 7, Kimura, in view of Hori, discloses a motor [1] comprising the stator [10] according to claim 6, as stated above; and a rotor [14] that rotates with respect to the stator [10] (fig. 1-2; ¶ 0059). Claim(s) 1-2 and 4-5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kimura in view of Yamasaka et al. (JP 2013-211956 A), hereinafter referred to as “Yamasaka”. Regarding claim 1, Kimura discloses an insulator [21] disposed between a stator core [20] and a three-phase coil [23] wound around the stator core [20] (fig. 1-3; ¶ 0064-0068), the insulator [21] comprising: a main body section [21b] that covers a portion around which the coil [23] is wound in the stator core [20] and insulates the stator core [20] from the coil [23] (fig. 5; ¶ 0083); and PNG media_image1.png 579 1278 media_image1.png Greyscale a jumper wire holding section [21d] that is disposed on a radial direction outer side of the main body section [21b] and holds a jumper wire [23a,23b,23c] of the coil [23] (fig. 5-9; ¶ 0085, 0089-0097), and wherein the jumper wire holding section [21d] includes a first groove [21da] in which a jumper wire [23a] of a first-phase coil [A-phase] is housed, a second groove [21db] that is disposed on an axial direction other side with respect to the first groove [21da] and in which a jumper wire [23b] of a second-phase coil [B-phase] is housed, and a third groove [21dc] that is disposed on the axial direction other side with respect to the second groove [21db] and in which a jumper wire [23c] of a third-phase coil [C-phase] is housed (fig. 5-6; ¶ 0089-0097). Kimura does not disclose that the first groove [21da], the second groove [21db], and the third groove [21dc] are formed in different shapes. Yamasaka discloses an insulator [7a] comprising a jumper wire holding section [72] that includes a first groove [76a], a second groove [76b], and a third groove [76c] (fig. 1-8; ¶ 0027), wherein the first groove [76a], the second groove [76a], and the third groove [76a] are formed in different shapes (fig. 8; ¶ 0028; each of the grooves have different depths relative to one another). PNG media_image3.png 302 481 media_image3.png Greyscale It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to form the grooves of Kimura having different shapes, e.g. different depths, as taught by Yamasaka, in order to prevent contact between the crossover wires (¶ 0070 of Yamasaka). Further, it has been held that a mere change in shape of a particular component of a device is a matter of design choice involving only routine skill in the art. In re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966). Regarding claim 2, Kimura, in view of Yamasaka, discloses the insulator [21] according to claim 1, as stated above, wherein the first groove [76a], the second groove [76b], and the third groove [76c] are different in depths in a radial direction (fig. 5-6, 9; the coil end portions are disposed at the bottom of each groove; in combination with Yamasaka, the bottoms of the grooves, and thus the locations of each coil end portion, are disposed at different radial positions). Regarding claim 4, Kimura, in view of Yamasaka, discloses the insulator [21] according to claim 1, as stated above, wherein a first coil end portion of the jumper wire [23a] of the first-phase coil [A-phase] in the first groove [21da], a second coil end portion of the jumper wire [23b] of the second-phase coil [B-phase] in the second groove [21db], and a third coil end portion of the jumper wire [23c] of the third-phase coil [C-phase] in the third groove [21dc] are present at different positions in a radial direction (fig. 5-6, 9; the coil end portions are disposed at the bottom of each groove; in combination with Yamasaka, the bottoms of the grooves, and thus the locations of each coil end portion, are disposed at different radial positions). Regarding claim 5, Kimura, in view of Yamasaka, discloses the insulator according to claim 4, as stated above, wherein the coil [23] entering a slot [21ca,21cb,21cc] from each of the first coil end portion, the second coil end portion, and the third coil end portion is separated from the jumper wires [23a,23b,23c] of the coil [23] of other phases (fig. 5; ¶ 0088-0092; the “wire pulled out from the coil 23” of each phase passes through a different radial opening in the jumper wire holding section). Citation of Relevant Prior Art The prior art made of record and not relied upon is considered pertinent to applicant’s disclosure. Prior art: Ueta et al. (US 2009/0243408 A1) discloses an insulator covering a stator core, having a main body section between the tooth and the coil and a jumper wire holding section radially outside the main body section, the jumper wire holding section having grooves for jumper wires of different phases. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Andrews whose telephone number is (571)270-7554. The examiner can normally be reached on Monday-Thursday, 8:30am-3:00pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Oluseye Iwarere can be reached at 571-270-5112. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Michael Andrews/ Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Jan 02, 2025
Application Filed
Jul 31, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
64%
Grant Probability
89%
With Interview (+24.6%)
2y 10m (~1y 3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1242 resolved cases by this examiner. Grant probability derived from career allowance rate.

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