Prosecution Insights
Last updated: April 19, 2026
Application No. 18/532,759

CHEMICAL INHIBITORS FOR HIGH TEMPERATURE AND REACTIVE GROUND

Final Rejection §102
Filed
Dec 07, 2023
Examiner
FELTON, AILEEN BAKER
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The University of Sydney
OA Round
2 (Final)
51%
Grant Probability
Moderate
3-4
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
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 . 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 1-4, 10-12, 16, 19-26, 29, 32, and 33 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Filippini (WO 0152976). Regarding claims 1-4, 10, 21-23, Filippini discloses an emulsion explosive that includes ammonium nitrate, fuel oil, and additives such as potassium carbonate (meets pH agent as described in Applicant’s specification) (pg. 31), molybdenum disulfide, alkali and alkaline earth phosphates (meets metal ion binding agent as described in Applicant’s specification) (pg. 31). Regarding claim 11, potassium carbonate is a base. Regarding claim 12, the pH of the pH agent will be inherent to the compound since the same claimed compounds are used. Regarding claim 16, the stability will be inherent since the same claimed compounds are used. Regarding claims 19. 20, 29, the additives are present at 1 % of the composition (pg. 35). Regarding claims 24 and 25, Filippini discloses the use of urea (meets nitrous acid neutralizing agent). This compound will inherently be stable at the claimed temperature since the same compound is used. Regarding claim 32, the emulsion is used as an explosive for blasting Regarding claim 33, the use in reactive ground is s statement of intended use. A recitation of the intended use of the claimed invention must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. If the prior art structure is capable of performing the intended use, then it meets the claim. Response to Arguments Applicant's arguments have been fully considered but they are not persuasive. Applicant's arguments that the prior art discloses a fertilizer composition are not well taken. The background of the prior art and multiple sections in the prior art refer to the use of the composition as an explosive emulsion. It is very clear that the prior art is indicating that the composition can be used for multiple things one of which is an explosive. There is an entire section of the disclosure which refers to explosive emulsions from page 14-16 of the prior art. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 at 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

Dec 07, 2023
Application Filed
Sep 16, 2025
Non-Final Rejection — §102
Jan 20, 2026
Response Filed
Apr 01, 2026
Final Rejection — §102 (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

3-4
Expected OA Rounds
51%
Grant Probability
67%
With Interview (+15.5%)
4y 6m
Median Time to Grant
Moderate
PTA Risk
Based on 435 resolved cases by this examiner. Grant probability derived from career allow rate.

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