Prosecution Insights
Last updated: April 19, 2026
Application No. 18/160,893

PROTECTIVE LAYERS AND SELF-CONTAINED HEAT-GENERATING COMPOSITIONS FOR THERMAL GAS GENERATORS

Non-Final OA §102§103
Filed
Jan 27, 2023
Examiner
FELTON, AILEEN BAKER
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Anasphere, Inc.
OA Round
1 (Non-Final)
51%
Grant Probability
Moderate
1-2
OA Rounds
4y 6m
To Grant
67%
With Interview

Examiner Intelligence

Grants 51% of resolved cases
51%
Career Allow Rate
223 granted / 435 resolved
-13.7% vs TC avg
Strong +16% interview lift
Without
With
+15.5%
Interview Lift
resolved cases with interview
Typical timeline
4y 6m
Avg Prosecution
51 currently pending
Career history
486
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
63.7%
+23.7% vs TC avg
§102
16.5%
-23.5% vs TC avg
§112
17.3%
-22.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 435 resolved cases

Office Action

§102 §103
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 . Election/Restrictions Claims 13, 14, and 17-34 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 12/2/2025. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 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 – (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 1-3, 6-12, 15, and 16 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Bognar (20170001700). Regarding claims 1, 10, 12, Wagner discloses a hydrogen generator which includes an igniter, thermite (meets pyrotechnic material), and lithium hydride material (meets gas generating composition). The pyrotechnic material is enclosed in a housing (meets self-contained article) which can include multiple layers (meets protective layer) and be metal or ceramic. See 0045-0048. The lithium hydride material (meets gas generating composition) is contained in the device as element 102 (see fig. 1B) which is proximate to the pyrotechnic material is enclosed in a housing (meets self-contained article). Regarding claim 2, the phrase “composition byproducts remain substantially in the same location” is a method limitation for the operation of the claimed device and does not limit the structure. Regarding claim 3, fig 1B shows a structure that holds the pyrotechnic composition. Regarding claim 6, fig 1B shows a structure that separates the gas generating composition and the pyrotechnic composition. Regarding claims 7-9, the protective layer (fig. 1B-element 110-112 and para. 0047) details are method limitations. Language that suggests or makes optional but does not require steps to be performed or does not limit a claim to a particular structure does not limit the scope of a claim or claim limitation (i.e. “adapted for”, “configured to”, etc.). These clauses are essentially method limitations or statements of intended or desired use and do not serve to patentably distinguish the claimed structure over that of the reference. See In re Pearson, 181 USPQ 641; In re Yanush, 177 USPQ 705; In re Finsterwalder, 168 USPQ 530; In re Casey, 512 USPQ 235; In re Otto, 136 USPQ 458; Ex parte Masham, 2 USPQ 2nd 1647. Regarding claim 11, the thermite material is a metal oxide and powdered aluminum (0024). Regarding claim 15 the ignition section meets the requirement that there are two self-contained articles see figure 1B. 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. Claims 4, 5, and 16 are rejected under 35 U.S.C. 103 as being unpatentable over Bognar as applied above and further in view of Schroeder (5668345). Regarding claims 4 and 5, Schroeder discloses a gas generating device that uses mesh to support the thermite (col. 4, lines 40-55) (same as the claimed pyrotechnic composition) and further indicates that the thermite composition can include a binding agent (col. 3, lines 45-55). It would have been obvious to one having ordinary skill in the art at the time the invention was made and/or filed to use the mash as taught by Schroeder with the device of Bognar since Schroeder discloses that it is known to use a mesh material to support a thermite composition. The thermite composition is the same as the claimed pyrotechnic composition in the instant claims. Further Bognar shows that the thermite composition is supported by the container in figure 1B. Thus, it is clear that a support means is required. Regarding claim 16 it is obvious to have duplicate layers. The duplication of parts is obvious in the instant claims. See In re Harza, 274 F.2d 669, 124 USPQ 378 (CCPA 1960) where the court held that mere duplication of parts has no patentable significance unless a new and unexpected result is produced. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to AILEEN BAKER FELTON whose telephone number is (571)272-6875. The examiner can normally be reached Monday 9-5:30, Thursday 11-3, Friday 9-5:30. 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, Jonathan Johnson can be reached on 571-272-1177. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /AILEEN B FELTON/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Jan 27, 2023
Application Filed
Mar 17, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600688
SENSITIZING COMPOSITION FOR ENERGETIC HYDROGEN PEROXIDE EMULSIONS
2y 5m to grant Granted Apr 14, 2026
Patent 12595217
THERMITE BLOCK FOR STORED-DATA DESTRUCTION
2y 5m to grant Granted Apr 07, 2026
Patent 12595174
METHOD FOR PRODUCING THE PENTAZOLATE ANION USING A HYPERVALENT IODINE OXIDANT
2y 5m to grant Granted Apr 07, 2026
Patent 12559443
ENERGY-RELEASING COMPOSITE MATERIAL AND METHOD FOR MANUFACTURING SAME
2y 5m to grant Granted Feb 24, 2026
Patent 12552729
MECHANICALLY-GASSED EMULSION EXPLOSIVES AND METHODS RELATED THERETO
2y 5m to grant Granted Feb 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
51%
Grant Probability
67%
With Interview (+15.5%)
4y 6m
Median Time to Grant
Low
PTA Risk
Based on 435 resolved cases by this examiner. Grant probability derived from career allow rate.

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