Prosecution Insights
Last updated: April 19, 2026
Application No. 18/013,228

DEVICE AND METHOD FOR SOC BALANCE CONTROL FOR DELTA STRUCTURE SEMICONDUCTOR TRANSFORMER-BASED ENERGY STORAGE DEVICE

Non-Final OA §102§103§112
Filed
Dec 27, 2022
Examiner
PACHECO, ALEXIS BOATENG
Art Unit
2859
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Hyosung Heavy Industries Corporation
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
91%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
767 granted / 983 resolved
+10.0% vs TC avg
Moderate +13% lift
Without
With
+12.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
53 currently pending
Career history
1036
Total Applications
across all art units

Statute-Specific Performance

§101
3.7%
-36.3% vs TC avg
§103
55.3%
+15.3% vs TC avg
§102
25.4%
-14.6% vs TC avg
§112
5.6%
-34.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 983 resolved cases

Office Action

§102 §103 §112
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 . Election/Restrictions Applicant’s election without traverse of claims 1-9 in the reply filed on 01/07/2026 is acknowledged. Claims 10-15 are withdrawn and CANCELED from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 01/07/2026. The requirement is deemed proper and is therefore made FINAL. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1 – 9 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites the limitation "the energy storage device" in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the delta structure semiconductor transformer" in line 2. There is insufficient antecedent basis for this limitation in the claim. Claim 3 recites the limitation "the capacitor" in line 4. There is insufficient antecedent basis for this limitation in the claim. Claim 3 recites the limitation "the battery" in line 1. There is insufficient antecedent basis for this limitation in the claim. 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. (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. 1. Claims 1 and 2 are rejected under 35 U.S.C. 102(a)(1)/102(a)(2) as being anticipated by Helling (US 20200235582). Regarding claim 1, Helling teaches a SoC equalization control device of the energy storage device based on the delta structure semiconductor transformer (Figure 1 item 20 discloses a control device defined in paragraph [0070] as a controller which controls the state of charge or charge state of the modules. Paragraph [0121] discloses balancing the state of charge of the modules). comprising: an A-phase PCS, a B-phase PCS, and a C-phase PCS in which PCSs (Power Conditioning Systems) performing charging/discharging from a 3-phase AC power supply are connected in a delta connection (figure 5 shows Power Conditioning Systems (PCS), interpreted as modules 14. Figure 5 shows modules with an A-phase, B-phase and C-phase connected in a delta connection); and an SoC equalization control device controlling the charging/discharging of a battery so that battery SoCs (State of Charge) of the PCSs are equalized (figure 1 item 20 shows an SOC equalization control device. Paragraphs [0070] and [0104] disclose wherein the SOC or charging state is equalized between the modules). PNG media_image1.png 365 383 media_image1.png Greyscale Figure 5 item 10 shows a plurality of PCS, modules items 14 connected in a delta structure. Regarding claim 2, Helling teaches the SoC equalization control device according to claim 1, wherein at least two or more PCSs in the A-phase PCS, the B-phase PCS, and the C-phase PCS are connected in series therein (figure 5 shows wherein at least two or more PCS, module items 14 are connected in series therein). 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. Claim 3 is rejected under 35 U.S.C. 103 as being unpatentable over Helling (US 20200235582) in view of Kato (US 20200127458) Regarding claim 3, Helling teaches the SoC equalization control device according to claim 1, wherein the PCS includes: an AC/DC converter converting an alternating current (AC) into a direct current (DC) and storing power in the capacitor; and a DC/DC converter performing DC/DC conversion in order to store the power stored in the capacitor in the battery (paragraph [0045] discloses wherein the PCS, modules, may contain both a storage element and an energy conversion element. Paragraph [0038] discloses wherein the storage elements may be a combination of a capacitor and a battery cell). Helling does not explicitly teach wherein the conversion elements are an ACDC converter, and a DCDC converter. Kato teaches wherein the conversion elements are an ACDC converter, and a DCDC converter (paragraph [0080] discloses wherein the power storage module includes a power conditioner item 12 with an ACDC converter 125 and a DCDC converter 127). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the charging system of the Helling reference with charging system of the Kato reference so that the power lines are still operational upon a power failure. The suggestion/motivation for combination can be found in the Kato reference in paragraph [0079] wherein maintaining operability upon a power failure is taught. Allowable Subject Matter 1. Claims 4 – 9 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. Regarding claim 4, the prior art teaches an SOC equalization control of a three-phase system, but does not explicitly teach “an each-phase SoC equalization control unit calculating a total zero phase component AC voltage command value based on an output of the positive/negative/zero phase component extraction unit for the equalization control of the each-phase battery SoC of the A-phase PCS, the B-phase PCS, and the C-phase PCS; an individual SoC equalization control unit calculating an individual capacitor voltage command value for the equalization control of individual battery SoC of the A-phase PCS, the B-phase PCS, and the C-phase PCS; an AC voltage control unit calculating an each-phase AC voltage command value based on outputs of the positive/negative phase/zero phase component extraction unit and the each-phase SoC equalization control unit.” Regarding claims 5 – 9, the claims are dependent upon claim 4 and include its allowable limitations. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Us 20040070280 A1 Output Suppressing Method Nakata, Hirofumi Et Al. Us 20050242781 A1 Power Fluctuation Suppressing Method Nakagawa, Tsuguhiko Us 20100244781 A1 Cell Management System Kramer; Quentin Wayne Et Al. Us 20120069612 A1 Arrangement For Exchanging Power Hasler; Jean-Philippe Us 20120081939 A1 Arrangement For Exchanging Power Hasler; Jean-Philippe Us 20180278064 A1 Storage Battery Management Kikuchi; Yusuke Et Al. Us 20160109493 A1 Power Flow Management Method Cheng; Po-Tai Us 20190199230 A1 Modulation Of AC/AC MMC Vasiladiotis; Michail Et Al. Us 20200127458 A1 Power Storage System Kato; Masaki Et Al. Us 20200044452 A1 Electrical Energy Storage Module Soua; Samir Et Al. Us 20220121260 A1 Power Distribution Management King; David Michael Et Al. Us 20230261563 A1 Power Conversion Device Fujiwara; Kenji Et Al. Us 11735930 B2 Energy Storage Racks Based On SOC And SOH Choi; Yean Sik Et Al. Us 20220103088 A1 Multi-Phase Module-Based Energy System Slepchenkov; Mikhail Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALEXIS B PACHECO whose telephone number is (571)272-5979. The examiner can normally be reached M-F 9:00 - 5:30. 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, Julian Huffman can be reached at 571-272-2147. 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. ALEXIS BOATENG PACHECO Primary Examiner Art Unit 2859 /ALEXIS B PACHECO/Primary Examiner, Art Unit 2859
Read full office action

Prosecution Timeline

Dec 27, 2022
Application Filed
Feb 04, 2026
Non-Final Rejection — §102, §103, §112 (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
78%
Grant Probability
91%
With Interview (+12.9%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 983 resolved cases by this examiner. Grant probability derived from career allow rate.

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