Prosecution Insights
Last updated: July 17, 2026
Application No. 18/254,757

CARBON BLACK, SLURRY, AND LITHIUM ION SECONDARY BATTERY

Non-Final OA §112
Filed
May 26, 2023
Priority
Dec 04, 2020 — JP 2020-201969 +1 more
Examiner
HENDRICKSON, STUART L
Art Unit
1736
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Denka Company Limited
OA Round
3 (Non-Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
718 granted / 993 resolved
+7.3% vs TC avg
Moderate +8% lift
Without
With
+8.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
30 currently pending
Career history
1020
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
78.9%
+38.9% vs TC avg
§102
0.7%
-39.3% vs TC avg
§112
9.1%
-30.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 993 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 . The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. The RCE is accepted. The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-7 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. There is no support for ‘less than 27nm’ now claimed. The specification portion cited could, at best, support a range of 17-27 nm. Furthermore, given that the comparative examples all recite sizes in the claimed range, it is not seen how an unexpected result has been established for the claimed range (or why a showing would even be necessary, given the sizes used by EP ‘082). Claims 5 and 6 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. The ‘dispersion medium’ in claim 5 is unclear if it is the same one referred to in claim 1. If it were not NMP, what would be the relevance of the viscosity recited in claim 1? Claim 6 depends from claim 5. Applicant’s arguments with respect to claim(s) above have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Any inquiry concerning this communication or earlier communications from the examiner should be directed to STUART L HENDRICKSON whose telephone number is (571)272-1351. The examiner can normally be reached on Monday-Friday from 9 to 5. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Anthony Zimmer, can be reached on 571-270-3591. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. /STUART L HENDRICKSON/Primary Examiner, Art Unit 1736
Read full office action

Prosecution Timeline

May 26, 2023
Application Filed
Nov 10, 2025
Non-Final Rejection mailed — §112
Feb 02, 2026
Response Filed
Apr 09, 2026
Final Rejection mailed — §112
Jun 16, 2026
Request for Continued Examination
Jun 18, 2026
Response after Non-Final Action
Jun 24, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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BIO-OIL LIGHT FRACTION-BASED BREAD-SHAPED POROUS ACTIVATED CARBON, METHOD FOR PREPARING THE SAME AND USE THEREOF
4y 2m to grant Granted Jul 14, 2026
Patent 12679732
Two-dimensional polymeric fullerene and preparation method thereof
3y 2m to grant Granted Jul 14, 2026
Patent 12673878
METHOD FOR PRODUCING CALCIUM CARBONATE, CALCIUM CARBONATE, AND METHOD FOR GROWING CALCIUM CARBONATE CRYSTALS
4y 7m to grant Granted Jul 07, 2026
Patent 12668516
SYSTEM AND METHOD FOR USING ULTRAMICROPOROUS CARBON FOR THE SELECTIVE REMOVAL OF NITRATE WITH CAPACITIVE DEIONIZATION
4y 2m to grant Granted Jun 30, 2026
Patent 12668702
HIGH TEMPERATURE HEAT INTEGRATION METHOD OF MAKING CARBON BLACK
2y 4m to grant Granted Jun 30, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
72%
Grant Probability
81%
With Interview (+8.3%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 993 resolved cases by this examiner. Grant probability derived from career allowance rate.

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