Prosecution Insights
Last updated: October 25, 2026
Application No. 18/727,796

NANOCELLULOSE-BASED AQUEOUS BINDER AND SLURRY FOR SECONDARY BATTERY ELECTRODE

Non-Final OA §112
Filed
Feb 14, 2025
Priority
Jan 10, 2022 — RE 10-2022-0003527 +1 more
Examiner
NGUYEN, KHANH TUAN
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hansol Chemical Co., Ltd.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
1y 0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
807 granted / 1083 resolved
+9.5% vs TC avg
Strong +19% interview lift
Without
With
+18.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
26 currently pending
Career history
1121
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
47.6%
+7.6% vs TC avg
§102
24.4%
-15.6% vs TC avg
§112
19.3%
-20.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1083 resolved cases

Office Action

§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 . Response to Amendment The preliminary amendment filed on 02/14/2025 is the latest filed amendment and is under consideration by the Examiner. No claim has been amended. Claims 1-13 are currently pending in the instant application. It is noted an earlier preliminary amendment, filed on 07/10/2024, with claim 10 amended, is of record. Applicant is requested to confirm that preliminary amendment filed on 02/14/2025 should be considered and not preliminary amendment filed on 07/10/2024. Priority This application is a 371 of PCT/KR2022/003335 (filed on 03/10/2022). Acknowledgment is made of applicant’s claim for foreign priority based on an application filed in Republic of Korea on 01/10/2022. Information Disclosure Statement The information disclosure statements (IDS) filed on 07/10/2024, 12/09/2024, and 04/06/2026 are in compliance with the provisions of 37 CFR 1.97 and have been considered by the examiner. An initialed copy accompanies this Office Action. Drawings The drawings filed on 07/10/2024 have been considered. 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 11-13 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. Regarding claim 11, in line 3 and line 8, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Claims 12 and 13 directly or indirectly depend from claim 11 and are indefinite based on their dependencies. Allowable Subject Matter Claims 1-10 are allowed over the prior art of record. The following is a statement of reasons for the indication of allowable subject matter: the claims, filed on 02/14/2025, have been carefully reviewed and searched. The best new prior art found is to EP 3001487 B1, hereinafter Park. Park discloses a binder with a core-shell structure for secondary battery electrode wherein the core includes styrene-butadiene rubber (SBR) and the shell includes a copolymer of two or more monomers selected from the group consisting of a conjugated diene-based monomer, a (meth)acrylic ester-based monomer, an acrylate-based monomer, a vinyl-based monomer, a nitrile-based monomer, and an ethylenically unsaturated carboxylic acid monomer, and the binder includes a functional group providing binding capacity to surfaces of the SBR particles (See [0001] and [0019]). Park discloses that the core-shell structure is formed by (a chemical reaction) polymerization process (See [0070]). Park also discloses a viscosity controlling agent (thickener) including carboxymethylcellulose (See [0056] and [0071]). However, Park failed to disclose a nanocellulose interacts with a functional group of the shell surface of the core-shell latex particle as required in claim 1. Therefore, claim 1 is allowable over the prior art of record. Claims 2-10 depend from claim 1 and are allowable based on their dependencies. Claims 11-13 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KHANH TUAN NGUYEN whose telephone number is (571)272-8082. The examiner can normally be reached M-F 9:00 AM to 5:00 PM EST. 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, Angela Brown-Pettigrew can be reached at (571) 272-2817. 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. /KHANH T NGUYEN/Primary Examiner, Art Unit 1761
Read full office action

Prosecution Timeline

Feb 14, 2025
Application Filed
Sep 22, 2026
Non-Final Rejection mailed — §112
Sep 28, 2026
Examiner Interview Summary
Sep 28, 2026
Examiner Interview (Telephonic)

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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
74%
Grant Probability
93%
With Interview (+18.7%)
2y 8m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1083 resolved cases by this examiner. Grant probability derived from career allowance rate.

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