Prosecution Insights
Last updated: April 19, 2026
Application No. 18/712,059

METHOD FOR DIMENSIONING A MULTI-POLE ORIENTED-FLUX MAGNETIC RING, AND ASSOCIATED ROTOR, ROTATING ELECTRIC MACHINE AND AIRCRAFT

Non-Final OA §103
Filed
May 21, 2024
Examiner
DESAI, NAISHADH N
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
SAFRAN
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
91%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allow Rate
893 granted / 1091 resolved
+13.9% vs TC avg
Moderate +9% lift
Without
With
+8.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
28 currently pending
Career history
1119
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
54.8%
+14.8% vs TC avg
§102
28.9%
-11.1% vs TC avg
§112
14.2%
-25.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1091 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement (IDS) submitted on 05/21/2024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Rejections - 35 USC § 103 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 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) 7-9 are rejected under 35 U.S.C. 103 as being unpatentable over Haran (US 20180287437). Regarding claim 7, Haran discloses: A rotor for a rotating electric machine (abstract) including a magnetic ring (para 42) comprising a predetermined number of pairs of poles (para 42, Figs 3A, 3B), the magnetic ring being formed by an oriented-flux magnet segmented into at least two sub-magnets (Figs 3A, 3B), Haran does not explicitly appear to teach wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi. However, since Haran teaches to choose a radial thickness and length for the magnetic ring (para 42) and to choose inner and outer diameters of a rotor (para 85), a skilled artisan would readily recognize the benefits of wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi, in order to achieve weight savings and direct flux as wanted (para 42). Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing of the invention to modify Haran wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi. The motivation to do so would be to achieve weight savings and direct flux as wanted (paras 3, 42) and cost (paras 36,37). Regarding claim 7, If the “acts” of a claimed process manipulate only numbers, abstract concepts or ideas, or signals representing any of the foregoing, the acts are not being applied to appropriate subject matter. Schrader, 22F.3d at 294-95, 30USPQ2d at 1458-59. Thus, a process consisting solely of mathematical operations, i.e., converting one set of numbers into another set of numbers, does not manipulate appropriate subject matter and thus cannot constitute a statutory process. MPEP 2106. In the instant case, it would have been obvious to a person having ordinary skill in the art before the effective filing of the invention to modify Haran wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi. The motivation to do so would be to achieve weight savings and direct flux as wanted (paras 3, 42) and cost (paras 36,37 of Haran). Regarding claim 8/7, Haran discloses a rotating electric machine including a rotor according to claim 7 (para 77). Regarding claim 9/7, Haran discloses an aircraft including a rotating electric machine according to claim 8 (para 76). Allowable Subject Matter Claims 1-6 are allowed. The following is a statement of reasons for the indication of allowable subject matter: Regarding claim 1, Haran discloses A method for dimensioning a multi-pole oriented-flux magnetic ring for a rotor of a rotating electric machine (para 42), the magnetic ring including a predetermined number of pairs of poles (para 42), the magnetic ring being formed by at least one oriented-flux magnet (para 42, Figs 3A,3B), the method comprises: determining a characteristic dimension of the magnet equal to the minimum value out of the outer perimeter of the ring and the axial length of the ring (since Haran teaches to choose a radial thickness and length for the magnetic ring (para 42) and to choose inner and outer diameters of a rotor (para 85), a skilled artisan would readily recognize the benefits of wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi, in order to achieve weight savings and direct flux as wanted (para 42)). Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing of the invention to modify Haran wherein the minimum value out of the outer perimeter of the ring and the axial length of the ring is greater than the minimum value out of the value of a predetermined reference length and twice the value Pi. The motivation to do so would be to achieve weight savings and direct flux as wanted (paras 3, 42) and cost (paras 36,37). However, neither Haran nor any additionally cited art of record teaches or fairly suggests, alone or in combination, inter alia, “determining a reference value equal to the minimum value out of a predetermined reference length and twice the value Pi, comparing the characteristic dimension of the magnet with the reference value, and if the characteristic dimension of the magnet is greater than the reference value, the method comprises the circumferential segmentation of the magnet into at least two sub-magnets.”. Claims 2-6 are allowable based on their virtue of depending on claim 1. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Please see PTO-892 for details. Any inquiry concerning this communication or earlier communications from the examiner should be directed to NAISHADH N DESAI whose telephone number is (571)270-3038. The examiner can normally be reached 9-5. 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 571-272-3560. 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. NAISHADH N. DESAI Primary Examiner Art Unit 2834 /NAISHADH N DESAI/Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

May 21, 2024
Application Filed
Jan 28, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603536
MOTOR HOUSING AND METHOD FOR MANUFACTURING A MOTOR HOUSING
2y 5m to grant Granted Apr 14, 2026
Patent 12597821
ROTARY ELECTRIC MACHINE
2y 5m to grant Granted Apr 07, 2026
Patent 12597826
ENERGY HARVESTER USING ELECTROMAGNETIC INDUCTION AND ENERGY HARVESTING BLOCK
2y 5m to grant Granted Apr 07, 2026
Patent 12587073
MOUNTING STRUCTURE OF GROUND RING OF MOTOR
2y 5m to grant Granted Mar 24, 2026
Patent 12587076
ELECTRIC MACHINE, METHOD FOR OPERATING SAID MACHINE, AND MOTOR VEHICLE
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
82%
Grant Probability
91%
With Interview (+8.7%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1091 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month