Prosecution Insights
Last updated: April 19, 2026
Application No. 18/664,380

ROTATOR FOR AXIAL FLUX MOTOR

Non-Final OA §102
Filed
May 15, 2024
Examiner
SUBRAMANIAN, VISWANATHAN
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Yea-Huey Horng
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
99%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
159 granted / 198 resolved
+12.3% vs TC avg
Strong +23% interview lift
Without
With
+22.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
40 currently pending
Career history
238
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
54.8%
+14.8% vs TC avg
§102
30.0%
-10.0% vs TC avg
§112
13.6%
-26.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 198 resolved cases

Office Action

§102
DETAILED ACTION This Office Action is in response to applicant’s communication filed on 5.15.24. In view of this communication, claims 1-2 are now pending in this application. 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 Claims below are objected to because of the following informalities: Claim 2 recites “a length of the multiple passing slots is defined among the two flanges and the peripheral fence”. Examiner suggests “between” for clarity. Appropriate correction is required. 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: Cooling structure of rotator for axial flux motor. 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 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. Claims 1-2 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lin et al (EP4325694A1), hereinafter Lin. Regarding Claim 1, Lin discloses (Figs 2a,4, 5a, 6) a rotator (30) for an axial flux motor (100)[Background] comprising: a core (31,33) and two permanent magnets (332 on both opposing sides) located on two end surfaces (Fig 6 axially opposite sides) of the core; wherein the core (31 including 334) includes two circular grooves (Fig 5a, 310) defined on the two end surfaces (Fig 5a) of the core, two flanges (Fl) formed on two centers (Fig 5a) of the two end surfaces of the core, and a peripheral fence (314) formed on an outer wall (314) of the core, multiple passing slots (318) [Para 0048 discloses “In another implementation of this application, a quantity of cooling channels 318 is not limited. The cooling channel 318 is provided with a plurality of interconnected sub-channels. The sub-channels may be provided on the inner ring 312, the outer ring 314, and the rib 316”] radially formed on the two end surfaces of the core, and multiple through orifices (318) defined around the peripheral fence (314) and communicated with the multiple passing slots [0048]; and wherein a respective one permanent magnet of the two permanent magnets is circular (Fig 6) and includes multiple N poles and multiple S poles, wherein the two permanent magnets are fitted in the two circular grooves (310) of the core and are magnetically attracted (334 and 332) on the core. PNG media_image1.png 300 294 media_image1.png Greyscale PNG media_image2.png 232 438 media_image2.png Greyscale PNG media_image3.png 422 486 media_image3.png Greyscale PNG media_image4.png 304 462 media_image4.png Greyscale Regarding Claim 2, Lin discloses the rotator for the axial flux motor as claimed in claim 1. Lin further discloses wherein the multiple passing slots (318, Para 0048) pass through the core (31), and a length of the multiple passing slots is defined among the two flanges (2 opposing sides of Fl axially) and the peripheral fence (314). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to VISWANATHAN SUBRAMANIAN whose telephone number is (571)272-4814. The examiner can normally be reached Monday - Friday 8:30 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, Christopher M Koehler can be reached at 5712723560. 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. /VISWANATHAN SUBRAMANIAN/Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

May 15, 2024
Application Filed
Jan 14, 2026
Non-Final Rejection — §102
Mar 26, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603563
SUPERCONDUCTING MOTORS AND COMPONENTS THEREOF
2y 5m to grant Granted Apr 14, 2026
Patent 12597812
BEARING SUPPORT FORMING ELECTRO MAGNETIC SHIELD FOR RESOLVER POSITION SENSOR FOR A BRUSHLESS ELECTRIC MOTOR
2y 5m to grant Granted Apr 07, 2026
Patent 12587056
Multipart Rotor for an Electric Machine, Electric Machine, and Motor Vehicle
2y 5m to grant Granted Mar 24, 2026
Patent 12580451
ROTOR DEVICE FOR AN ELECTRIC MACHINE INCLUDING A COOLING FLUID LINE, A COLLECTING RING, AND AN ADAPTER
2y 5m to grant Granted Mar 17, 2026
Patent 12571426
MAGNETIC BEARING STATOR WITH IMPROVED BOBBINS
2y 5m to grant Granted Mar 10, 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
80%
Grant Probability
99%
With Interview (+22.9%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 198 resolved cases by this examiner. Grant probability derived from career allow rate.

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