Prosecution Insights
Last updated: April 19, 2026
Application No. 16/986,596

WATERLESS ELECTRICALLY OPERATED PROPELLANT

Final Rejection §103
Filed
Aug 06, 2020
Examiner
FELTON, AILEEN BAKER
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Raytheon Company
OA Round
4 (Final)
51%
Grant Probability
Moderate
5-6
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

§103
ETAILED 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 . 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 1-3 and 7-13 are rejected under 35 U.S.C. 103 as being unpatentable as applied to Hahmna (EP 2698359) above and further in view of Nicolich (20120024437). Regarding claims 1-3 and 7-13, Hahma discloses a propellant with an ionic liquid such as butylmethyl-imidazolium perchlorate (electrolyte source) (claim 6) with a polymeric binder (claim 8). The composition is free of water. The ionic liquid will melt in the same way as claimed since it is the same compound. Nicolich discloses the addition of perchlorate oxidizer and metal compound (fuel) to an ionic liquid propellant containing imidazolium salts and indicates that these can be added to “provide desired performance properties to the explosive composition or may aid in processing”. (0034) It would have been obvious to one having ordinary skill in the art at the time the invention was made and/or filed to includes additional oxidizers such as perchlorates and metals to the ionic liquid propellant of Hahma since Nicolich suggests that the addition of the compounds can “provide desired performance properties to the explosive composition or may aid in processing”. (0034) One of ordinary skill would have a reasonable expectation of success based on the addition of these compounds to the similar composition of Hahma which contains the same ionic liquid since Nicolich teaches that the compounds will improve the propellant properties. Further, Nicolich recites in para. 0016: “The ionic liquid reduces the sensitivity of the explosive composition to stimuli, such as electrostatic discharge ("ESD"), accidental detonation, impact, friction, or slow or fast cook-off. The ionic liquid may reduce the sensitivity of the explosive composition without substantially affecting the overall energy or performance characteristics of the explosive composition”. Thus it would be obvious to use the combination since it is well known in the explosive art to provide safety features to avoid accidental detonation as explicitly taught by Nicolich. Regarding claim 7, Nicolich teaches the addition of a metal compound which would result in a metal containing ionic liquid (0034). Response to Arguments Applicant's arguments have been fully considered but they are not persuasive. Applicant alleges that Hahma contains water. Hahma does not indicate the use of any water in the composition. No evidence has been provided to show that water was used. Applicant indicates that the composition “quite likely” had water. This is merely is providing an opinion and does not change the reference disclosure. Applicant argues that the combination is not obvious since Applicant alleges that the Nicolich discloses elements that would slow and explosion. This is incorrect as Nicolich recites in para. 0016: “The ionic liquid reduces the sensitivity of the explosive composition to stimuli, such as electrostatic discharge ("ESD"), accidental detonation, impact, friction, or slow or fast cook-off. The ionic liquid may reduce the sensitivity of the explosive composition without substantially affecting the overall energy or performance characteristics of the explosive composition” (emphasis added). Thus, the characteristics of the explosive are maintained while making the explosive safer to use while avoiding accidental detonation. Applicant argues that the composition of Hahma is not a propellant. First, the composition as claimed is met by the prior art. The term “propellant” is a statement of intended use and indicates how the composition will operate. Since there is no difference between the claimed composition and that disclosed by Hahma, the prior art will perform in the same manner as that which is claimed. Applicant also argues the amount of water in the composition. Note that the prior art does not require any water to be added and does not indicate that the binder has any water in it. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. 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

Aug 06, 2020
Application Filed
Nov 29, 2023
Response after Non-Final Action
Nov 26, 2024
Non-Final Rejection — §103
Feb 27, 2025
Response Filed
Mar 10, 2025
Final Rejection — §103
Jun 09, 2025
Request for Continued Examination
Jun 11, 2025
Response after Non-Final Action
Sep 03, 2025
Non-Final Rejection — §103
Dec 02, 2025
Response Filed
Mar 16, 2026
Final Rejection — §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.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

5-6
Expected OA Rounds
51%
Grant Probability
67%
With Interview (+15.5%)
4y 6m
Median Time to Grant
High
PTA Risk
Based on 435 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month