Prosecution Insights
Last updated: April 19, 2026
Application No. 18/280,626

ROTARY ELECTRICAL MACHINE

Non-Final OA §103
Filed
Sep 06, 2023
Examiner
CHANG, MINKI
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Mitsubishi Electric Corporation
OA Round
3 (Non-Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
2y 9m
To Grant
82%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
278 granted / 389 resolved
+3.5% vs TC avg
Moderate +10% lift
Without
With
+10.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
36 currently pending
Career history
425
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
50.7%
+10.7% vs TC avg
§102
27.5%
-12.5% vs TC avg
§112
17.7%
-22.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 389 resolved cases

Office Action

§103
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 12/11/2025 has been entered. Response to Arguments Applicant’s arguments, see pages 7-9, filed 12/11/2025, with respect to the rejection(s) of claim(s) 7 under 35 U.S.C. § 102 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of new prior art below. Applicant’s arguments, see pages 7-9, filed 12/11/2025, with respect to rejection of claim 1 have been fully considered and are persuasive. The rejection of the claim has been withdrawn. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 7-9 are rejected under 35 U.S.C. 103 as being unpatentable over Takahashi et al. (US 2010/0194214 A1) in view of Endo et al. (US 2018/0083516 A1). Regarding claim 7, Takahashi discloses a rotary electrical machine (¶ [0001]; FIG. 9) comprising: a stator (19) that includes a plurality of iron cores (10) that are annularly disposed; windings (13) that are wound to each of the plurality of iron cores (10); connection terminals (13a, 13b) to which the windings (13) are connected to; molded members (14) that partially cover (FIG. 13 discloses the molded member 14 on covers one side of the iron core on the left and partially covers the top side of the iron core) the plurality of iron cores (10) and the windings (13); and a rotor (connected to rotor shaft 33) that rotates around an axis that coincides with a circular center of the plurality of iron cores (10; FIG. 9), wherein the molded members (14) have resin portions that cover the plurality of iron cores (10) and the windings (13), and winding holders (16) that are attached to each of the plurality of iron cores (10); wherein the winding holders (16) have arc grooves that extend along the circumferential direction of the stator (19); PNG media_image1.png 446 634 media_image1.png Greyscale a part (17) of the windings (13) is disposed in the arc grooves; and the molded portions (14) cover the winding holders (16; FIG. 13). Takahashi does not disclose a plurality of exposed terminal portions that expose the connection terminals. Endo discloses a plurality of exposed terminal portions (¶ [0052] terminals 16 is partially exposed) that expose the connection terminals (16). It would have been obvious to one of ordinary skill in the art before the effective filing of the claimed invention to have modified Takahashi in view of Endo to disclose a plurality of exposed terminal portions that expose the connection terminals, for the advantages of directly connecting the terminals to external components (¶ [0053]). Regarding claim 8/7, Takahashi in view of Endo was discussed above in claim 7. Takahashi further discloses winding holders (16) that are attached to each of the plurality of iron cores (10); wherein the winding holders (16) have arc grooves (FIG. 11; holding busbars 17) that extend along the circumferential direction of the stator (19; FIG. 11); and a part (17) of the windings (13) is disposed in the arc grooves (FIG. 13). Regarding claim 9/7, Takahashi in view of Endo was discussed above in claim 7. Takahashi in view of Endo further discloses the plurality of the exposed terminal portions (FIG. 2; connection terminals 13a, 13b are at equal intervals) are formed in the molded members (14) at equal intervals along the circumferential direction of the stator (19). Takahashi modified by Endo would have the exposed terminal portions where the connection terminals 13a and 13b are located, which would have the exposed terminal portions at equal intervals around the stator. Claim 12 is rejected under 35 U.S.C. 103 as being unpatentable over Takahashi et al. (US 2010/0194214 A1) in view of Endo et al. (US 2018/0083516 A1) as applied to claim 7 above, and further in view of Yamagata et al. (US 2020/0028404 A1). Regarding claim 12/7, Takahashi in view of Endo was discussed above in claim 7. Takahashi in view of Endo does not explicitly disclose PA66 is used as a material of the resin portions. Yamagata discloses PA66 is used as a material of the resin portions (¶ [0073] nylon 66 is another name for PA66). It would have been obvious to one of ordinary skill in the art before the effective filing of the claimed invention to have modified Takahashi in view of Endo, further in view of Yamagata to disclose PA66 is used as a material of the resin portions, as using PA66 as a resin material is a simple substitution of a known element for another to obtain predictable results. Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 1, the specific limitation of “the molded member have … a plurality of exposed terminal portions that expose the connection terminals, the windings have terminal wires that connect to the windings; the terminal wires are positioned in each of the exposed terminal portions” in the combination as claimed are neither anticipated nor made obvious over the prior art made of record. The closest prior art Endo discloses a stator and windings, the stator and winding covered and held together by resin, and terminals which are exposed from the resin, but does not disclose the winding having terminal wires which are also exposed from the resin. Claims 2-3 and 5-6 are allowable for depending upon claim 1. Claims 10-11 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Regarding claim 10/7, the specific limitation of “the windings have terminal wires that connect to the windings; the terminal wires are positioned in each of the exposed terminal portions” in the combination as claimed are neither anticipated nor made obvious over the prior art made of record. The closest prior art Endo discloses a stator and windings, the stator and winding covered and held together by resin, and terminals which are exposed from the resin, but does not disclose the winding having terminal wires which are also exposed from the resin. Regarding claim 11/7, the specific limitation of “the windings have terminal wires that connect to the windings; the terminal wires are positioned in each of the exposed terminal portions” in the combination as claimed are neither anticipated nor made obvious over the prior art made of record. The closest prior art Endo discloses a stator and windings, the stator and winding covered and held together by resin, and terminals which are exposed from the resin, but does not disclose the winding having terminal wires which are also exposed from the resin. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MINKI CHANG whose telephone number is (571)270-0521. The examiner can normally be reached 9:00 AM - 5:00 PM. 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. /MINKI CHANG/Examiner, Art Unit 2834 /OLUSEYE IWARERE/Supervisory Patent Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Sep 06, 2023
Application Filed
May 28, 2025
Non-Final Rejection — §103
Aug 15, 2025
Response Filed
Sep 18, 2025
Final Rejection — §103
Dec 11, 2025
Response after Non-Final Action
Dec 24, 2025
Request for Continued Examination
Jan 14, 2026
Response after Non-Final Action
Jan 24, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603553
METHOD OF MANUFACTURING COIL, COIL, AND ELECTRIC MOTOR
2y 5m to grant Granted Apr 14, 2026
Patent 12603558
PRINTED CIRCUIT BOARD STATOR WINDING ENHANCEMENTS FOR AXIAL FIELD ROTARY ENERGY DEVICE
2y 5m to grant Granted Apr 14, 2026
Patent 12597830
E-MACHINE WITH A COOLING SYSTEM INCLUDING SPRAYER ARRANGEMENT
2y 5m to grant Granted Apr 07, 2026
Patent 12592615
FILTER TO SUPPRESS CURRENT CIRCULATION IN ROTATING ELECTRICAL MACHINE
2y 5m to grant Granted Mar 31, 2026
Patent 12580431
STATOR FOR AN ELECTRIC MACHINE AND ELECTRIC MACHINE FOR DRIVING A VEHICLE
2y 5m to grant Granted Mar 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
72%
Grant Probability
82%
With Interview (+10.3%)
2y 9m
Median Time to Grant
High
PTA Risk
Based on 389 resolved cases by this examiner. Grant probability derived from career allow rate.

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