Prosecution Insights
Last updated: August 06, 2026
Application No. 17/768,156

NANO-SILICON PARTICLES/WIRE PRODUCTION BY ARC FURNACE FOR RECHARGEABLE BATTERIES

Final Rejection §112
Filed
Apr 11, 2022
Priority
Oct 09, 2019 — provisional 62/913,152 +1 more
Examiner
TAI, XIUYU
Art Unit
1795
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hpq Nano Silicon Powders Inc.
OA Round
4 (Final)
59%
Grant Probability
Moderate
5-6
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
603 granted / 1028 resolved
-6.3% vs TC avg
Strong +50% interview lift
Without
With
+49.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
39 currently pending
Career history
1049
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
45.6%
+5.6% vs TC avg
§102
15.3%
-24.7% vs TC avg
§112
30.4%
-9.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1028 resolved cases

Office Action

§112
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 Objections Claim 41 is objected to because of the following informalities: claim 41 is missed from claim list. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 21, 27, 29, 31-34, 37-38, and 40 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 21 recites the limitation "the electrode" in various places. There is insufficient antecedent basis for this limitation in the claim. Appropriate correction/classification is required, For the purpose of examination, the above limitation will be interpreted as “the hollow electrode" Claim 21 recites the limitation "a quenching gas" in line 20. There is insufficient antecedent basis for this limitation in the claim. Appropriate correction/classification is required, For the purpose of examination, the above limitation will be interpreted as “the second flow of quenching gas" Claim 27 recites the limitation "the electrode" in line 1. There is insufficient antecedent basis for this limitation in the claim. Appropriate correction/classification is required, For the purpose of examination, the above limitation will be interpreted as “the hollow electrode " Due to the dependency to the parent claim, Claims 27, 29, 31-34, 37-38, and 40 are rejected. Response to Arguments Applicant’s arguments have been considered but are moot in light of the applicant’s amendments. Conclusion Claims 21, 27, 29, 31-34, 37-38, and 40 are rejected. 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 XIUYU TAI whose telephone number is (571)270-1855. The examiner can normally be reached Mon.-Fri. 9:00-5:00. 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, Luan Van can be reached at 571-272-8521. 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. /XIUYU TAI/Primary Examiner, Art Unit 1795
Read full office action

Prosecution Timeline

Show 1 earlier event
Feb 14, 2025
Non-Final Rejection mailed — §112
Jul 24, 2025
Response Filed
Aug 19, 2025
Final Rejection mailed — §112
Dec 19, 2025
Request for Continued Examination
Dec 24, 2025
Response after Non-Final Action
Jan 16, 2026
Non-Final Rejection mailed — §112
May 18, 2026
Response Filed
Jul 02, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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RECOVERY OF RARE EARTH METALS FROM FERROMAGNETIC ALLOYS
4y 11m to grant Granted Jul 28, 2026
Patent 12690117
PLASMA ACTIVATED FLUID PROCESSING SYSTEM
4y 9m to grant Granted Jul 21, 2026
Patent 12686615
METHOD AND SYSTEM OF THERMOLYSIS BASED HYDROGEN AND OXYGEN GENERATION
3y 6m to grant Granted Jul 21, 2026
Patent 12680706
ION GENERATING DEVICE AND AIR CONDITIONER COMPRISING THE SAME
3y 8m to grant Granted Jul 14, 2026
Patent 12678761
GAS-TO-LIQUID REACTOR AND METHOD OF USING
2y 3m to grant Granted Jul 14, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
59%
Grant Probability
99%
With Interview (+49.6%)
3y 3m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1028 resolved cases by this examiner. Grant probability derived from career allowance rate.

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