Prosecution Insights
Last updated: April 19, 2026
Application No. 18/123,404

TRANSFORMER

Non-Final OA §102
Filed
Mar 20, 2023
Examiner
BARNES, MALCOLM
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Diamond&Zebra Electric Mfg Co. Ltd.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
87%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
364 granted / 454 resolved
+12.2% vs TC avg
Moderate +7% lift
Without
With
+6.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
14 currently pending
Career history
468
Total Applications
across all art units

Statute-Specific Performance

§103
58.7%
+18.7% vs TC avg
§102
27.7%
-12.3% vs TC avg
§112
11.2%
-28.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 454 resolved cases

Office Action

§102
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 . Information Disclosure Statement The Information Disclosure Statement (IDS) filed on 03/20/2023 and 11/28/2025 have been considered. Allowable Subject Matter Claims 6, 8 and 9 are objected to as being dependent upon a rejected base claim, but would be allowable if any of claims 6, 8 and 9 are rewritten in independent form including all of the limitations of the base claims and any intervening claims. Claim 6 recites, inter alia, “…wherein the plurality of radiator plates include a first flat radiator plate covering the first surface, a second flat radiator plate covering the second surface, and a third flat radiator plate covering the third surface. (Emphasis added). Claim 8 recites, inter alia, “…wherein the plurality of radiator plates include a first bent radiator plate covering the first and second surfaces, a second bent radiator plate covering the second and third surfaces, a third bent radiator plate covering the third and fourth surfaces, and a fourth bent radiator plate covering the fourth and first surfaces, and the first, second, third, and fourth bent radiator plates do not overlap one another. (Emphasis added). Claim 9 recites, inter alia, “…wherein the plurality of radiator plates include a first bent radiator plate covering the first and second surfaces and a second bent radiator plate covering the third and fourth surfaces. (Emphasis added). Claim Rejections - 35 USC § 102 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. Claims 1-5, 7 and 10-13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sasaki et al. (hereinafter Sasaki), Japanese Patent JP2019047105A. Regarding Claim 1, Sasaki teaches, a transformer (Fig. 2) comprising: a coil (37, 38); a core (40) enclosing the coil, the core including a first surface (side), a second surface (top) adjoining the first surface, and a third surface (other side) opposite to the first surface and adjoining the second surface; and a plurality of radiator plates (70, 80) each of which covers a part of the core, wherein the first and third surfaces are covered by different radiator plates (70, 80) of the plurality of radiator plates. (Sasaki: Figs. 1-4, machine translation, para. [0023]-[0025]). Regarding Claim 2, Sasaki further teaches, wherein the plurality of radiator plates include a first bent radiator plate (70, left rear, Fig. 2) covering the first and second surfaces and a second bent radiator plate (70, right front, Fig. 2) covering the second and third surfaces, and the first and second bent radiator plates cover the second surface without overlapping each other. (Sasaki: Fig. 2, machine translation, para. [0024]). Regarding Claim 3 and similarly claim 4, Sasaki further teaches, wherein in a front view of the second surface (top), a side of the first bent radiator plate that faces the second bent radiator plate and a side of the second bent radiator plate that faces the first bent radiator plate include inclined portions (incline portions of 70) that are inclined with respect to a side of the second surface that is adjacent to the first surface. (Sasaki: Fig. 2, machine translation, para. [0024]). Regarding Claim 5, Sasaki further teaches, wherein the plurality of radiator plates (70) include a first bent radiator plate covering the first (top) and second (left rear side) surfaces and a flat radiator plate (80) covering the third surface (bottom). (Sasaki: Fig. 2, machine translation, para. [0024], [0063]). Regarding Claim 7, Sasaki further teaches, wherein the core further includes a fourth surface (bottom) opposite to the second surface and adjoining the third surface, and the second and fourth surfaces (top and bottom, respectively) are covered by different radiator plates (70 and 80, respectively) of the plurality of radiator plates. (Sasaki: Fig. 2, machine translation, para. [0024], [0063]). Regarding Claim 10, Sasaki further teaches, wherein the plurality of radiator plates include a first bent radiator plate (rear left 70, Fig. 2) covering the first and second surfaces, a second bent radiator plate (front right 70) covering the second and third surfaces, and a flat radiator plate (80) covering the fourth surface. (Sasaki: Fig. 2, machine translation, para. [0024], [0063]). Regarding Claim 11 and similarly claim 12, Sasaki further teaches, further comprising a signal line (37a, 38a) electrically connected to the coil, wherein the core (40) includes a first half (40a) and a second half (40b) on which the first half is placed, the first half includes a top surface and a side surface extending from the top surface, the second half includes a bottom surface and a side surface extending from the bottom surface, the side surfaces of the first and second halves constitute one surface of the core, the first half includes a cut (incline surfaces of 40a, 40b comprise cuts), also (45a, 45b, 245a, 245b, 345a, 345b) in the side surface of the first half, the cut extending from an end adjacent to the second half to an end adjacent to the top surface, one of the plurality of radiator plates (70) includes an outlet at a location corresponding to a location of the end of the cut that is adjacent to the top surface, and the signal line (37a, 38a) extends out of the transformer through the cut and the outlet. (Sasaki: Fig. 2, machine translation, para. [0024], [0025], [0028], [0030], [0089], [0095]). Regarding Claim 13, Sasaki further teaches, wherein a thermally-conductive adhesive, grease, or sheet is located between the radiator plates and the core (“adhesive may be used to adhere the heat dissipation cover 70 to the core” [0061]. (Sasaki: Fig. 2, machine translation, para. [0024], [0061]). Pertinent Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Sasaki et al. (US 2019047105), Lee et al. (US 20150155088) and Iwakura et al. (JP 2016139699 A). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MALCOLM BARNES whose telephone number is (408)918-7512. The examiner can normally be reached M-F 7:30-5:00 pm (PST). 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, Shawki Ismail can be reached on 571-272-3985. 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. /MALCOLM BARNES/ Primary Examiner, Art Unit 2837 12/23/2025
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Prosecution Timeline

Mar 20, 2023
Application Filed
Dec 25, 2025
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603219
COIL COMPONENT
2y 5m to grant Granted Apr 14, 2026
Patent 12603216
COIL COMPONENT
2y 5m to grant Granted Apr 14, 2026
Patent 12597549
THERMAL MANAGEMENT OF TRANSFORMER WINDINGS
2y 5m to grant Granted Apr 07, 2026
Patent 12592334
STACKED MAGNETIC INDUCTOR AND METHOD
2y 5m to grant Granted Mar 31, 2026
Patent 12586711
COIL COMPONENT
2y 5m to grant Granted Mar 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
80%
Grant Probability
87%
With Interview (+6.6%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 454 resolved cases by this examiner. Grant probability derived from career allow rate.

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