Prosecution Insights
Last updated: October 25, 2026
Application No. 18/938,264

DEVICE AND METHOD FOR METAL PREPARATION BY ELECTRO-REDUCTION OF MOLTEN SALT

Final Rejection §112
Filed
Nov 05, 2024
Priority
Dec 21, 2023 — CN 202311772758.2
Examiner
MENDEZ, ZULMARIAM
Art Unit
1794
Tech Center
1700 — Chemical & Materials Engineering
Assignee
North China University of Science and Technology
OA Round
2 (Final)
66%
Grant Probability
Favorable
3-4
OA Rounds
1y 2m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allowance Rate
637 granted / 964 resolved
+1.1% vs TC avg
Strong +21% interview lift
Without
With
+21.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
47 currently pending
Career history
1005
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
62.2%
+22.2% vs TC avg
§102
22.3%
-17.7% vs TC avg
§112
10.0%
-30.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 964 resolved cases

Office Action

§112
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 § 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. Claim 1 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for “a height of the outer wall of the conductive barrel 13 being lower than the height of the second insulating cylinder 14”, does not reasonably provide enablement for “an outer wall of the conductive barrel being higher than a height of the second insulating cylinder”, as claimed. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make the invention commensurate in scope with these claims. Claim 1, lines 19-22, recites “the second insulating cylinder is inserted into the conductive barrel, and a bottom surface of the second insulating cylinder against an inner bottom surface of the conductive barrel, and an outer wall of the conductive barrel is higher than a height of the second insulating cylinder”. However, paragraph 44 of applicant’s specification discloses that “a second insulating cylinder 14 is inserted into the conductive barrel 13, a height of the outer wall of the conductive barrel 13 is lower than the height of the second insulating cylinder 14, to prevent the formation of an electrically isolated layer at the opening of the reactor 1 (as shown in figure 2). Appropriate correction and/or clarification are required. Statement of Status of Claims - Allowable Subject Matter Claims 2, 3, 5 and 11-18 are objected to as being dependent upon a rejected base claim but would be allowable if the rejection under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph is overcome. Claims 1-3, 5 and 11-18 are free of rejection over prior art. The closest prior art is considered to be CN 109853001 to Kamali and US 2021/0009415 to Kamali, as previously presented. Note that the claims are subject to a rejection under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, and therefore not indicated as allowable. 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 ZULMARIAM MENDEZ whose telephone number is (571)272-9805. The examiner can normally be reached M-F 8am-4:30p. 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, James Lin can be reached at 571-272-8902. 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. /ZULMARIAM MENDEZ/Primary Examiner, Art Unit 1794
Read full office action

Prosecution Timeline

Nov 05, 2024
Application Filed
Jun 16, 2026
Non-Final Rejection mailed — §112
Aug 24, 2026
Response Filed
Sep 15, 2026
Final Rejection mailed — §112 (current)

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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
66%
Grant Probability
87%
With Interview (+21.3%)
3y 2m (~1y 2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 964 resolved cases by this examiner. Grant probability derived from career allowance rate.

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