Prosecution Insights
Last updated: April 19, 2026
Application No. 18/711,382

MOTOR

Non-Final OA §102§103
Filed
May 17, 2024
Examiner
MATES, ROBERT E
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Minebea Mitsumi Inc.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
3y 2m
To Grant
93%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
246 granted / 444 resolved
-12.6% vs TC avg
Strong +37% interview lift
Without
With
+37.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
36 currently pending
Career history
480
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
57.9%
+17.9% vs TC avg
§102
25.2%
-14.8% vs TC avg
§112
13.0%
-27.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 444 resolved cases

Office Action

§102 §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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Specification The title of the invention is not descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. The following title is suggested: MOTOR WITH MOLDED ROTOR. Also, the abstract is too short (less than 50 words). Claim Rejections - 35 USC § 102 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-5 are rejected under 35 U.S.C. 102(a)(1) and 35 U.S.C. 102(a)(2) as being anticipated by Yamagishi et al. (US 2014/0077652 A1, hereinafter Yamagishi). As to claim 1, Yamagishi shows (FIG. 1, 2): PNG media_image1.png 570 502 media_image1.png Greyscale A motor, comprising: a rotor 12; and a stator 11 opposing the rotor 12 in a radial direction, the rotor 12 including: a yoke 12Y; a magnet 26; and a resin part 16, 34 covering the yoke and the magnet, wherein the resin part 16, 34 is disposed adjacent to the magnet 26 in a circumferential direction (motor para [0057]; endplates 16 are resin para [0043], resin filler 34 in holes 32 para [0054],[0055],[0057]) . As to claim 2/1, Yamagishi further shows (FIG. 1, 2 above) wherein the resin part 16, 34 includes aluminum or silicon (silicon resin 34 para [0055]). As to claim 3/2/1, Yamagishi further shows (FIG. 1, 2 above) wherein the resin part 16,34 is a non-magnetic material or a soft magnetic material (nonmagnetic resin para [0043],[0055]). As to claim 4/2/1, Yamagishi further shows (FIG. 1, 2 above) wherein the stator 11 is disposed at an outer peripheral side of the rotor 12 in the radial direction, the yoke 12Y includes an outer peripheral surface opposing the stator 11, and the outer peripheral surface is exposed with respect to the resin part 16, 34 (the resin is not on the outer radial surface of the rotor core 12 FIG. 1) . As to claim 5/4/2/1, Yamagishi further shows (FIG. 3) wherein the magnet 26 includes a magnet outer peripheral surface opposing the stator 11, and the resin part 34 covers the magnet outer peripheral surface (para [0056]). Claim(s) 1, 7, 8 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Takahashi (WO 2021020195 A1 see US 2022/0352780 A1 for English Translation). As to claim 1, Takahashi shows (FIG. 1, 2): PNG media_image2.png 542 744 media_image2.png Greyscale A motor 1, comprising: a rotor 2; and a stator 5 opposing the rotor 2 in a radial direction, the rotor 2 including: a yoke 21; a magnet 23; and a resin part 25 covering the yoke 21 and the magnet 23, wherein the resin part 25 is disposed adjacent to the magnet 23 in a circumferential direction 25c (para [0036], [0040], [0050], resin 25P covers the end of the rotor 2). As to claim 7/1, Takahashi further shows (FIG. 1, 2 above): a sensor 6 configured to detect a magnetic flux, wherein the resin part 25 includes a step part 25P in one face at one side in the axial direction, and includes a thin part 25T having a thickness in an axial direction of the resin part 25 at an outer peripheral side from the step part 25P smaller than a thickness in the axial direction of the resin part at an inner peripheral side from the step part 25P, the resin part 25 at an outer peripheral side and the resin part 25 at an inner peripheral side being disposed at one side of the magnet 23 in the axial direction, and the sensor opposes the thin part 6 in the axial direction (thin part 25T at 24, sensor on circuit board 6 para [0052]). As to claim 8/1, Takahashi further shows (FIG. 1, 2 above): a sensor 6 configured to detect a magnetic flux, wherein a thickness in an axial direction of the resin part 25T disposed at the other side of the magnet 23 in the axial direction is smaller than a thickness in the axial direction of the resin part 25B disposed at one side of the magnet 23 in the axial direction, and the sensor 6 opposes the magnet via the resin part 25T at the other side in the axial direction (thin part 25T at 24, sensor on circuit board 6 para [0052]). 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. Claim(s) 6 is rejected under 35 U.S.C. 103 as being unpatentable over Yamagishi et al. (US 2014/0077652 A1, hereinafter Yamagishi) in view of Urabe (WO 2019180780 A1). As to claim 6/2/1, Yamagishi was discussed above with respect to claim 2 except for the resin part includes, in a face at one side in an axial direction, a recess part recessed toward the other side in the axial direction, and the recess part forms an injection trace of the resin forming the resin part. Urabe shows: the resin part includes, in a face at one side in an axial direction, a recess part 34 recessed toward the other side in the axial direction, and the recess part 34 forms an injection trace of the resin forming the resin part (FIG. 7, resin injection trace or hole 34 para [0027], hole para [0033], para [0100]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the rotor of Yamagishi to have: the resin part 16 includes, in a face at one side in an axial direction, a recess part 34 recessed toward the other side in the axial direction, and the recess part 34 forms an injection trace of the resin forming the resin part 16 as taught by Urabe, for the advantageous benefit of improved manufacturing quality of the rotor as taught by Urabe (para [0026]). Allowable Subject Matter Claim 9 is 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. The following is a statement of reasons for the indication of allowable subject matter: The prior art does not teach or suggest the second magnet having resin parts on one radial and two circumferential sides. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Hans (US 2005/0001503 A1) shows (FIG. 8) a molded rotor with first and second magnets. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT E MATES whose telephone number is (571)270-5293. The examiner can normally be reached M to F 12:00pm to 8pm. 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, TULSIDAS PATEL can be reached at (571)272-2098. 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. /ROBERT E MATES/ Examiner, Art Unit 2834 /TULSIDAS C PATEL/ Supervisory Patent Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

May 17, 2024
Application Filed
Feb 07, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603551
HYBRID LIQUID AND AIR COOLING OF HIGH-POWER PERMANENT MAGNET MACHINE ROTOR
2y 5m to grant Granted Apr 14, 2026
Patent 12597839
BUTTON MECHANISM
2y 5m to grant Granted Apr 07, 2026
Patent 12592606
AXIAL FLUX MOTOR WITH AIR COOLING SYSTEM
2y 5m to grant Granted Mar 31, 2026
Patent 12573930
VIBRATION GENERATOR AND ELECTRONIC DEVICE HAVING THE SAME
2y 5m to grant Granted Mar 10, 2026
Patent 12562612
END WINDING SUPPORT BRACKET
2y 5m to grant Granted Feb 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
55%
Grant Probability
93%
With Interview (+37.2%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 444 resolved cases by this examiner. Grant probability derived from career allow rate.

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