Prosecution Insights
Last updated: May 29, 2026
Application No. 18/548,768

LAMINATED IRON CORE MANUFACTURING METHOD AND LAMINATED IRON CORE

Final Rejection §112
Filed
Sep 01, 2023
Priority
Mar 15, 2021 — JP 2021-041801 +1 more
Examiner
TRUONG, THOMAS
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Nhk Spring Co. Ltd.
OA Round
3 (Final)
73%
Grant Probability
Favorable
4-5
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
931 granted / 1272 resolved
+5.2% vs TC avg
Strong +16% interview lift
Without
With
+16.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
28 currently pending
Career history
1307
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
87.5%
+47.5% vs TC avg
§102
4.1%
-35.9% vs TC avg
§112
7.0%
-33.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1272 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 04/21/2026 has been entered. 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. Claims 1 and 9 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 1 recited the following limitation: “simultaneously performing shearing and the extending of a lengthwise direction end of the caulking portions” “disposing a lowermost surface of the caulking portion closer to the caulking punch than an upper surface of a push-up mechanism” Such limitations are new matter which were not disclosed in the original disclosure as filed. Claim 9 is rejected for its dependency on claim 1. Allowable Subject Matter Claims 8 and 10 are allowed. Claims 8 and 10 are allowable because the claims have been written in independent form and included the previous indicated allowable subject matter as noted previously. Response to Arguments Applicant's arguments filed 04/21/2026 have been fully considered but they are not persuasive. With regard to 35 USC 112(a), Applicant argued that support for simultaneously performing shearing and the extending of a lengthwise direction end of the caulking portions is shown in Figures 11A and 11B as filed. Applicant further argued that disposing a lowest surface of the caulking portion closer to the caulking punch than an upper surface of the push-up mechanism is also shown in Figures 11A, 11B. In response: Applicant's argument was not found persuasive because (i) while Figure 11A, 11B appeared to show shearing and extending of a lengthwise direction, the original disclosure does not expressively disclose that such shearing is performed simultaneously; (i) Figures 11A and 11B and the original disclosure does not show which surface is a lowest surface of the caulking portion. As shown in Figure 11A, 11B, the "lowest most surface of the caulking portion 18 appeared to be in contact with an upper surface of the push-up mechanism. Therefore, such surface cannot be closer to the caulking punch 38 than an upper surface of the push-up mechanism 36. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to THOMAS TRUONG whose telephone number is (571)270-5532. The examiner can normally be reached Monday-Friday 9AM-6PM EST. 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, Seye Iwarere can be reached at (571) 270-5112. 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. /THOMAS TRUONG/Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Sep 01, 2023
Application Filed
Aug 06, 2025
Non-Final Rejection mailed — §112
Oct 28, 2025
Response Filed
Jan 23, 2026
Final Rejection mailed — §112
Apr 21, 2026
Response after Non-Final Action
May 06, 2026
Request for Continued Examination
May 13, 2026
Response after Non-Final Action
May 19, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12640629
METHOD FOR MANUFACTURING ROTOR, ROTOR, DRIVE APPARATUS, AND END PLATE
2y 7m to grant Granted May 26, 2026
Patent 12640603
MAGNETIC FLUX REDUCING CIRCUITS FOR MITIGATING MAIN BEARING CURRENT IN ELECTRIC MOTORS AND GEARBOXES
2y 6m to grant Granted May 26, 2026
Patent 12640604
ROTOR AND ROTATING ELECTRIC MACHINE
2y 5m to grant Granted May 26, 2026
Patent 12640605
ROTOR FOR A ROTARY ELECTRIC MACHINE
2y 9m to grant Granted May 26, 2026
Patent 12633788
ROTOR AND MOTOR
2y 3m to grant Granted May 19, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
73%
Grant Probability
89%
With Interview (+16.1%)
2y 8m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1272 resolved cases by this examiner. Grant probability derived from career allowance rate.

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