Prosecution Insights
Last updated: April 19, 2026
Application No. 18/269,392

ALKALI METAL ION-CONDUCTIVE SOLID ELECTROLYTE, METHOD FOR PRODUCING SAME, SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, METHOD FOR PRODUCING SAID SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Non-Final OA §102
Filed
Jun 23, 2023
Examiner
BARCENA, CARLOS
Art Unit
1723
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Panasonic Intellectual Property Management Co., Ltd.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
93%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
883 granted / 1101 resolved
+15.2% vs TC avg
Moderate +12% lift
Without
With
+12.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
38 currently pending
Career history
1139
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
44.4%
+4.4% vs TC avg
§102
27.4%
-12.6% vs TC avg
§112
19.7%
-20.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1101 resolved cases

Office Action

§102
DETAILED ACTION Drawings The drawings are objected to because (1) where only a single view is used in an application to illustrate the claimed invention, it must not be numbered and the abbreviation "FIG." must not appear. See MPEP §1.84(u): Numbering of views; and (2) accordingly, the specification should be amended to reflect changes made to the single figure. For example, “FIG. 1” may be removed from the image and --The Figure-- may be used throughout the specification. Specification The disclosure is objected to because of the following informalities: please see above. The specification should be amended to reflect changes made to the single figure. Appropriate correction is required. 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 1-7 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Aizawa et al. (JPH-117936), machine translation. Regarding claims 1 and 7, Aizawa discloses a battery separator comprising: a sulfonic group-containing cellulose (abstract; Fig. 1). PNG media_image1.png 150 268 media_image1.png Greyscale In Figure 1, R represents an acid group, specifically SO3X (para 0028). X may be an alkali metal (para 0028). Regarding claim 2, Aizawa discloses n = 1 to 4 alkylene group (Fig. 1; para 0028). Regarding claim 3, Aizawa discloses cellulose, which includes a plurality of hydroxyl groups (Fig. 1). Regarding claim 4, Aizawa discloses cellulose (Fig. 1), which is a derivative of a polysaccharide. Regarding claim 5, when n =1 the polymer above, the mass (EW value) is 175 g/mol. Regarding claim 6, Aizawa discloses alkali metal (para 0028), which includes lithium. Claim 1, 3, 4, 6, 7, 10, and 16 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Pirk et al. (US 2014/0227607). Regarding claims 1 and 6, Pirk discloses a layer configuration comprising: an organic matrix (e.g., chitosan, polyethylene oxide) having functional SO3X groups wherein the X may denote, for example, monovalent ions such as alkali metal ions as well as lithium, sodium or potassium ions (para 0016). Regarding claim 3, Pirk discloses chitosan, which includes a plurality of hydroxyl groups (para 0016). Chitosan is illustrated below. PNG media_image2.png 132 330 media_image2.png Greyscale Regarding claim 4, Pirk discloses chitosan (para 0016), which is a derivative of a polysaccharide. Regarding claims 7 and 10, Pirk discloses a rechargeable lithium-ion battery including a top electrode 16, electrolyte layer 18 (separator), and bottom electrode 14 (Fig. 1), wherein at least the electrolyte layer and one of the top electrode layer or the bottom electrode layer have an organic matrix (abstract). Regarding claim 16, Pirk discloses electrolyte layer 18 (separator) as a sheet (Fig. 1). Claim 1-4, 11-13, and 15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kasai et al. (JP 2010-218742), machine translation. Regarding claims 1-4 and 11-13, Kasai discloses a solid polymer electrolyte membrane, and method comprising: adding sodium 2-bromomethanesulfonate (a halogenated alkyl sulfonate) to a sodium hydroxide aqueous solution including cellulose powder (Example 1: para 0017) to replace at least one hydrogen of the hydroxyl group with -R-SO3X (sulfoethylation reaction). Cellulose is the polymer and 2-bromomethanesulfonate (shown below) has the recited -R-SO3X formula: PNG media_image3.png 153 330 media_image3.png Greyscale PNG media_image4.png 600 600 media_image4.png Greyscale . Regarding claim 15, Kasai discloses 2-propanol (Example 1: para 0017). Allowable Subject Matter Claims 8, 9, and 14 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 Any inquiry concerning this communication or earlier communications from the examiner should be directed to CARLOS BARCENA whose telephone number is (571)270-5780. The examiner can normally be reached Monday-Thursday 8-5 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, Tong Guo can be reached at (571)272-3066. 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. /CARLOS BARCENA/Primary Examiner, Art Unit 1723
Read full office action

Prosecution Timeline

Jun 23, 2023
Application Filed
Jan 16, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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SELF-CHARGING ELECTROCHEMICAL CELLS
2y 5m to grant Granted Apr 14, 2026
Patent 12597607
CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
2y 5m to grant Granted Apr 07, 2026
Patent 12592384
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
2y 5m to grant Granted Mar 31, 2026
Patent 12583759
ALKALI METAL-DOPED AND ALKALINE EARTH METAL-DOPED POSITIVE ELECTRODE MATERIALS AND METHODS OF MANUFACTURING THE SAME
2y 5m to grant Granted Mar 24, 2026
Patent 12586794
Positive Electrode for Lithium Secondary Battery Including Insulating Layer Having Excellent Wet Adhesion and Lithium Secondary Battery Including the Same
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
93%
With Interview (+12.5%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 1101 resolved cases by this examiner. Grant probability derived from career allow rate.

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