DETAILED ACTION
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Continued Examination Under 37 CFR 1.114
A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 3/3/26 has been entered.
Claim Objections
Claims 8-14 and 21-23 are objected to because of the following informalities:
With regard to claim 8: Lines 2-3 of the claim, it appears the limitation “the core” should be –the cellular lattice core-- for consistency of the claim language.
With regard to claims 21-23: It appears the limitation “a relative density” should be --the relative density-- for consistency of the claim language.
Appropriate correction is required.
Claim Rejections - 35 USC § 112
The following is a quotation of the first paragraph of 35 U.S.C. 112(a):
(a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention.
The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112:
The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention.
Claims 1-23 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention.
With regard to claims 1, 8 and 16: There appears to be inadequate support for the cellular lattice core having a relative density of 10% or less (emphasis added). Examiner submits that the claimed range encompasses all values below 10%, which does not appear to be supported. Par. [0045]-[0046] of the original disclosure discloses relative density values of 4%, 7% and 10%.
With regard to claims 21-23: : There appears to be inadequate support for the cellular lattice core having a relative density of between 4% and 10% (emphasis added). Examiner submits that the claimed range encompasses all values between 4% and 10%, which does not appear to be supported. Par. [0045]-[0046] of the original disclosure discloses relative density values of 4%, 7% and 10%.
Claim Rejections - 35 USC § 103
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.
Claim(s) 1-4, 7-11, 14-18 and 21-23 is/are rejected under 35 U.S.C. 103 as being unpatentable over Reynolds et al. (US 2006/0053726 A1) in view of Ollman (US 3,882,653).
With regard to claims 1, 8, 21 and 22: Reynolds et al. discloses a truss system (figs. 2-4 and 5-11) comprising:
a plurality of unit cells (three-dimensional trussed structures and braced planar truss systems) (figs. 2-4 and 5-11; par. [0002]), each unit cell comprising:
a base (B) (fig. 2);
a plurality of struts (A), each strut (A) comprising an I-shaped cross-section and each strut attached at one end to the base (B) (fig. 2-4 and 5-11); and
a top (C), each strut (A) attached to the top (C) at an opposite end and extending at an inclined angle between the base (B) and the top (C) (figs. 2-3 and 5-11).
Reynolds et al. does not disclose that the base is a base plate and the top is a top plate.
However, Ollman discloses a unit cell (three-dimensional truss structure) having a plurality of struts (23, 24) connected to a top comprising top plate (21) and a base comprising a base plate (22) (figs. 1-3).
It would have been obvious to one of ordinary skill in the art before the effective filing date of claimed invention to modify the truss system of Reynolds et al. to have the base comprise a base plate and the top comprise a top plate such as taught by Ollman in order to create a structural panel capable distributing load for use in creating floors, roofs and or walls. No new or unpredictable results would be obtained from modifying the truss system of Reynolds et al. to have the base comprise a base plate and the top comprise a top plate such taught by Ollman. Such a combination, to one of ordinary skill in the art, would have a reasonable expectation of success, and would be based on ordinary skill and common sense before the effective filing date of the claimed invention. Reynolds et al. as modified by Ollman discloses a sandwich structure comprising the cellular latticed structure formed from the truss system.
Reynolds et al. in view of Ollman does not disclose a relative density of 10% or less. Reynolds et al. in view of Ollman does not disclose the relative density between 4% and 10%.
It would have been an obvious matter of design choice to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the truss system of Reynolds et al. previously modified by Ollman to have the cellular core comprise a desired relative density, including a relative density between 4% and 10%, in order to reduce weight of the cellular core while maximizing structural characteristics including strength and load-bearing capacity for the use in which it was intended. No new or unpredictable results would be obtained from modifying the relative density to be between 4% and 10% in order to reduce weight of the cellular core while maximizing structural characteristics including strength and load-bearing capacity. Such a combination, to one of ordinary skill in the art, would have a reasonable expectation of success, and would be based on ordinary skill and common sense before the effective filing date of the claimed invention.
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Fig. 2: Reynolds et al. (US 2006/0053726 A1)
With regard to claims 2 and 9: Reynolds et al. discloses that the plurality of struts (A) comprises four struts (figs. 2-3 and 5-11). Reynolds et al. as modified Ollman discloses the base plate and the four struts form a pyramid or a truncated pyramid.
With regard to claims 3 and 10: Reynolds et al. discloses that the I-shaped cross-section (figs. 5-11) comprises:
two parallel bars (flanges) (figs. 5-11); and
a link (web) that extends perpendicularly between and connects the two parallel bars (flanges) (figs. 5-11).
With regard to claims 4 and 11: Reynolds et al. discloses that each bar (flange) has a thickness that is equivalent to a width of the link (web) (figs. 5-11).
With regard to claims 7 and 14: Examiner notes that the claimed truss system comprising the plurality of unit cells are not assembled with one another, where each unit cell comprises their own base plate and top plate.
The plurality of cells being formed by repeatedly copying a single unit cell and translating each copy along an x direction, a y direction, or both is interpreted as a product by process claim. “[E]ven though product-by-process claims are limited by and defined by the process, determination of patentability is based on the product itself. The patentability of a product does not depend on its method of production. If the product in the product-by-process claim is the same as or obvious from a product of the prior art, the claim is unpatentable even though the prior product was made by a different process.” In re Marosi, 710 F.2d 799, 218 USPQ 289 (Fed. Cir. 1983) and In re Thorpe, 777 F.2d 695, 227 USPQ 964 (Fed. Cir. 1985). See also MPEP § 2113.
With regard to claims 15-18 and 23: The claimed method would have been an obvious method of making a unit cell for a truss system for a cellular lattice core of sandwich structure in view of the rejection of claims 1-4, 7-11 and 14 under 35 U.S.C. 103 as being unpatentable over Reynolds et al. (US 2006/0053726 A1) and Ollman (US 3,882,653).
Claim(s) 5-6, 12-13 and 19-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Reynolds et al. (US 2006/0053726 A1) in view of Ollman (US 3,882,653) and in further view of Yan et al. (CN 104227182 A).
With regard to claims 5 and 12: Reynolds et al. in view of Ollman does not disclose that the I-shaped cross-section further comprises a plurality of triangles affixed to the link, each triangle providing a transition between the link and one bar of the two parallel bars.
However, Yan et al. discloses an I-shaped cross-section comprising a plurality of triangles (2) affixed to a link (3, web), each triangle (2) providing a transition between the link (3, web) and one bar of the two parallel bars (1, flange plates) (figs. 1-2).
It would have been obvious to one of ordinary skill in the art before the effective filing of the claimed invention to modify the I-shaped cross section of Reynolds et al. to include a plurality of triangles affixed to the link, each triangle providing a transition between the link and one bar of the two parallel bars such taught by Yan et al. in order to provide reinforcement and stiffening of the I-shaped cross-section for withstanding greater loading.
With regard to claims 6 and 13: Reynolds et al. discloses that each bar (flange) has a thickness that is less than or equivalent to a width of the link (web).
With regard to claims 19-20: The claimed method would have been an obvious method of making a unit cell for a truss system in view of the rejection of claims 1-6 and 8-13 under 35 U.S.C. 103 as being unpatentable over Reynolds et al. (US 2006/0053726 A1), Ollman (US 3,882,653) and Yan et al. (CN 104227182 A).
Response to Arguments
The previous rejection of claims 1-20 under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, has been withdrawn in view of the amendment filed 3/3/26.
Applicant’s arguments with respect to the claim(s) have been considered but are moot in view of the new grounds of rejection.
Regarding applicant’s arguments that the cited prior does not teach or suggest a lattice core having a relative density within the claimed range, nor does it disclose technical advantages achieved by such as configuration.
Examiner respectfully submits that I-beams are known for superior strength-to-weight ratios and resistance to bending compared to beams of a solid configuration. Examiner further notes that reducing a density of member will inherently impact its strength and weight compared to a member of the same type and dimensions. It would have been an obvious matter of design choice to one of ordinary skill in the art before the effective filing date of the claimed invention to have the cellular core comprise a desired relative density, including a relative density between 4% and 10%, in order to reduce weight of the cellular core while maximizing structural characteristics including strength-to-weight ratio for the use in which it was intended. Note that the NPL document to Park et al. discloses that it is known that the relative density dictates the properties of a lattice (section 2.1.1).
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Park et al. (NPL document: Design Optimization of Lattice Structures under Compression: Study of Unit Cell Types and Cell Arrangements) discloses that the relative density dictates the mechanical properties of the lattice (section 2.1.1).
Any inquiry concerning this communication or earlier communications from the examiner should be directed to JESSIE T FONSECA whose telephone number is (571)272-7195. The examiner can normally be reached 7:00am - 3:30pm.
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/JESSIE T FONSECA/Primary Examiner, Art Unit 3633