Prosecution Insights
Last updated: September 18, 2026
Application No. 18/861,931

Power Conversion Device

Non-Final OA §102
Filed
Oct 31, 2024
Priority
Nov 21, 2022 — JP 2022-185834 +1 more
Examiner
COOK, CORTEZ M
Art Unit
Tech Center
Assignee
Hitachi Ltd.
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
425 granted / 504 resolved
+24.3% vs TC avg
Moderate +8% lift
Without
With
+8.5%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
10 currently pending
Career history
510
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
53.4%
+13.4% vs TC avg
§102
26.1%
-13.9% vs TC avg
§112
15.6%
-24.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 504 resolved cases

Office Action

§102
CTNF 18/861,931 CTNF 91300 DETAILED ACTION This office action is in response to claims filed on 10/31/2024. Claims 1-10 are pending. Notice of Pre-AIA or AIA Status 07-03-aia AIA 15-10-aia The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA. Priority 02-26 AIA Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement 06-52 The information disclosure statement (IDS) submitted on 10/31/2024 was filed on the filing date of the application. The submission 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 § 102 07-07-aia AIA 07-07 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 – 07-08-aia AIA (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. 07-15 AIA Claim s 1-2 are rejected under 35 U.S.C. 102( a)(1 ) as being anticipated by Yoshiura et al. US 20130057191 A1 (Hereinafter “Yoshiura”) . Claim 1 , Yoshiura teaches a power conversion device (Fig. 1, 100) that drives a magnet motor (Fig. 1, 200), comprising: a first filter unit (Fig. 1, 7) that includes a primary system transfer function filter that varies in correspondence with a pulsating component of the magnet motor, and computes a second speed estimation value (Fig. 1, second motor speed) from a speed command value and a first speed estimation value (Fig. 1, First motor speed); a speed control unit (Fig. 1, 2) that computes a first torque current command value (Fig. 1, first torque command) from the speed command value and the second speed estimation value (Fig. 1, second motor speed); and a second filter unit (Fig. 1, 3) that includes a secondary system transfer function filter that varies in correspondence with the pulsating component, and computes a second torque current command value (Fig. 1, second torque command) from the first torque current command value, wherein power to be supplied to the magnet motor is controlled on the basis of the second torque current command value (Claim 1, the torque controller being configured to acquire the second torque command so as to control a torque of the motor, the thrust controller being configured to acquire the second thrust command so as to control a thrust of the motor). Claim 2 , Yoshiura teaches the power conversion device according to claim 1, wherein the first filter unit has a parameter relating to the speed command value ([0071]), and computation including the parameter is performed from the first speed estimation value to obtain the second speed estimation value ([0072]) . Allowable Subject Matter 12-151-08 AIA 07-43 12-51-08 Claim s 3-10 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. Conclusion 07-96 AIA The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Takaki et al. US 20150244298 A1 teaches estimating a first estimated phase value relating to an estimated phase of a rotor based on a rotary electric machine current flowing through a rotary electric machine; acquiring, based on a second estimated phase value corresponding to the first estimated phase value, from correction information storing a plurality of the second estimated phase values and a plurality of correction values in association with each other, one of the plurality of correction values associated with the second estimated phase value, and correcting the second estimated phase value based on the one of the plurality of correction values; calculating a speed command based on a position command and the corrected second estimated phase value; and calculating one of a torque command value and a q-axis current command value based on the speed command and the corrected second estimated phase value . Any inquiry concerning this communication or earlier communications from the examiner should be directed to CORTEZ M COOK whose telephone number is (571)270-7954. The examiner can normally be reached Monday-Thursday 7:30-5pm. 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, Eduardo Colon-Santana can be reached at 571-272-2060. 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. /CORTEZ M COOK/ Primary Examiner, Art Unit 2837 Application/Control Number: 18/861,931 Page 2 Art Unit: 2837 Application/Control Number: 18/861,931 Page 3 Art Unit: 2837 Application/Control Number: 18/861,931 Page 4 Art Unit: 2837 Application/Control Number: 18/861,931 Page 5 Art Unit: 2837
Read full office action

Prosecution Timeline

Oct 31, 2024
Application Filed
Jun 15, 2026
Non-Final Rejection mailed — §102
Sep 09, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12734900
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Patent 12728751
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Patent 12732130
ELECTRIC POWER CONVERSION DEVICE, MOTOR DRIVING DEVICE, AND REFRIGERATION CYCLE APPLICATION APPARATUS
2y 5m to grant Granted Sep 08, 2026
Patent 12732126
SWITCHING DEVICE FOR AC MOTOR
2y 2m to grant Granted Sep 08, 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
84%
Grant Probability
93%
With Interview (+8.5%)
2y 1m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 504 resolved cases by this examiner. Grant probability derived from career allowance rate.

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