Prosecution Insights
Last updated: July 17, 2026
Application No. 18/619,061

METHOD FOR MATHEMATICAL MODEL FOR ESTIMATING POLARIZATION PARAMETERS OF OIL PAPER INSULATION OF TRANSFORMER

Non-Final OA §101
Filed
Mar 27, 2024
Priority
Apr 10, 2023 — CN 202310370223.6
Examiner
EVANS, GEOFFREY T
Art Unit
Tech Center
Assignee
Yunnan Power Grid Co. Ltd. Honghe Power Supply Bureau
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
690 granted / 809 resolved
+25.3% vs TC avg
Moderate +9% lift
Without
With
+8.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
30 currently pending
Career history
827
Total Applications
across all art units

Statute-Specific Performance

§101
7.3%
-32.7% vs TC avg
§103
65.4%
+25.4% vs TC avg
§102
22.0%
-18.0% vs TC avg
§112
2.8%
-37.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 809 resolved cases

Office Action

§101
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 . Claim Rejections - 35 USC § 101 Claims 1-3 are rejected under 35 U.S.C. 101 because the claimed invention is directed to the judicial exception of abstract ideas without significantly more. The claim(s) recite(s) abstract ideas as indicated by in-line comments below. This judicial exception is not integrated into a practical application for reasons also indicated by in-line comments below. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception for reasons also indicated by in-line comments below. 1. An improved method for a mathematical model for estimating a polarization parameter of oil paper insulation of a transformer, comprising: based on a dielectric response theory, applying a direct current voltage of up to 2000 V to a test object through a Tettex recovery voltmeter (RVM) during a specified charging time, wherein the RVM requires multiple measurement cycles, each of which is divided into a charging phase, a discharging phase, a measurement phase, and a relaxation phase (does not integrate into a practical application because generally linking the use of the judicial exception to a particular technological environment or field of use; not significantly more because generally linking the use of the judicial exception to a particular technological environment or field of use); multiple relaxation times existing in an oil paper composite medium, and replacing a uniform oil paper insulation with an equivalent circuit with an extended Debye model upon considering dielectric response characteristics of the RVM (abstract; mathematical concepts; mathematical relationships); improving the equivalent circuit of the extended Debye model by circulating the multiple measurement cycles, and establishing two nonlinear equations in the extended Debye model with measurement data, to identify all unknown parameters in the equivalent circuit of the extended Debye model (abstract; mathematical concepts; mathematical calculations); and solving the two nonlinear equations by using a particle swarm algorithm, wherein each unknown parameter is solved by substituting at least 2n sets of recovered voltage characteristics into each nonlinear equation, and the particle swarm algorithm is applied for searching an optimal value, n is an integer equal to or greater than one (abstract; mathematical concepts; mathematical calculations). 2. The improved method for the mathematical model for estimating the polarization parameter of oil paper insulation of the transformer according to claim 1, wherein the specified charging time of the RVM is twice the discharging time (abstract; mathematical concepts; mathematical relationships). 3. The improved method for the mathematical model for estimating the polarization parameter of oil paper insulation of the transformer according to claim 1, wherein solutions of two nonlinear equations are transformed into an optimization problem through circuit parameters obtained by the RVM (abstract; mathematical concepts; mathematical calculations). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Yang et al. (2019/0041450) is cited for disclosing assessment of aging of oil paper using a return voltage curve and extended Debye model. Any inquiry concerning this communication or earlier communications from the examiner should be directed to GEOFFREY T EVANS whose telephone number is (571)272-2369. The examiner can normally be reached M-F, 9 AM - 5:30 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, Walter Lindsay can be reached at (571) 272-1674. 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. /WALTER L LINDSAY JR/Supervisory Patent Examiner, Art Unit 2852 /GEOFFREY T EVANS/ Examiner, Art Unit 2852
Read full office action

Prosecution Timeline

Mar 27, 2024
Application Filed
Jul 02, 2026
Non-Final Rejection mailed — §101 (current)

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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
85%
Grant Probability
94%
With Interview (+8.7%)
2y 8m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 809 resolved cases by this examiner. Grant probability derived from career allowance rate.

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