Prosecution Insights
Last updated: August 16, 2026
Application No. 18/015,263

ADSORBENT AND GRANULATED SUBSTANCE

Non-Final OA §102§103§112
Filed
Jan 09, 2023
Priority
Sep 14, 2020 — JP 2020-153950 +1 more
Examiner
CHU, YONG LIANG
Art Unit
1731
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The University of Tokyo
OA Round
3 (Non-Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
78%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
1076 granted / 1436 resolved
+9.9% vs TC avg
Minimal +3% lift
Without
With
+3.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
47 currently pending
Career history
1478
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
34.6%
-5.4% vs TC avg
§102
20.8%
-19.2% vs TC avg
§112
30.1%
-9.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1436 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission on 05/19/2026 has been entered. Upon entering the submission, claim 1 is amended. Claims 1-9 are pending, and under examination on the merits. Response to RCE Submission Claim rejection under 35 U.S.C. §102(a)(1) Applicant amended claim 1 by further limiting claimed adsorbent “wherein the weight of the acid or the base inside the fine pores is equal to or more than the weight of the porous body”. In addition, Applicant argued that the cited Nefzi is silent regarding any weight ratio between diatomaceous earth and hydrochloric acid. Nefzi's disclosure of cellulose-modified diatomaceous earth indicates, at most, that hydrochloric acid is used in connection with modification of Si-OH groups. Nefzi does not disclose an adsorbent in which hydrochloric acid remains present in an amount equal to or greater than the amount of diatomaceous earth. Indeed, Nefzi's manufacturing process includes a washing step that removes hydrochloric acid, which weighs against any conclusion that the final material contains hydrochloric acid in an amount equal to or greater than the diatomaceous earth. Applicant’s amendment and argument have been considered, and are sufficient to overcome the rejection. The rejection is hereby withdrawn. Claim rejection under 35 U.S.C. §103(a) Applicant amended claim 1 by further limiting claimed adsorbent “wherein the weight of the acid or the base inside the fine pores is equal to or more than the weight of the porous body”. In addition, Applicant argued that the cited Nefzi is silent regarding any weight ratio between diatomaceous earth and hydrochloric acid. Nefzi's disclosure of cellulose-modified diatomaceous earth indicates, at most, that hydrochloric acid is used in connection with modification of Si-OH groups. Nefzi does not disclose an adsorbent in which hydrochloric acid remains present in an amount equal to or greater than the amount of diatomaceous earth. Indeed, Nefzi's manufacturing process includes a washing step that removes hydrochloric acid, which weighs against any conclusion that the final material contains hydrochloric acid in an amount equal to or greater than the diatomaceous earth. In addition, none of the cited references (Kafy, the '502 publication, and the '114 patent), either alone or in combination, teaches or suggests the claimed integrated configuration. The cited references fail to teach and/or suggest the added limitation “wherein the weight of the acid or the base inside the fine pores is equal to or more than the weight of the porous body”. The rejection is hereby withdrawn. Following rejections are necessitated by the new amendment filed 05/19/2026. 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 pre-AIA the applicant regards as the invention. Specifically, claim 1 contains a phrase “one of an acid and a base with which inside of the fine pores of the porous body is impregnated to neutralize a target gas to generate a salt”, wherein the term “one of an acid and a base” is indefinite in light of the added limitation “wherein the weight of the acid or the base inside the fine pores is equal to or more than the weight of the porous body”. It seems the term “one of an acid and a base” should be replaced with “one of an acid or a base” because the added limitation cites “the weight of the acid or the base inside the fine pores”, but not “the weight of the acid and the base inside the fine pores”. Claims 2-9 depending on claim 1 are rejected, accordingly. Conclusions Claims 1-9 are rejected. Telephone Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to Yong L. Chu, whose telephone number is (571)272-5759. The examiner can normally be reached on M-F 8:30am-5:00pm. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Amber R. Orlando can be reached on 571-270-3149. The fax phone number for the organization where this application or proceeding is assigned is (571) 273-8300. /YONG L CHU/Primary Examiner, Art Unit 1731
Read full office action

Prosecution Timeline

Show 5 earlier events
Dec 18, 2025
Response Filed
Feb 19, 2026
Final Rejection mailed — §102, §103, §112
Apr 13, 2026
Interview Requested
Apr 22, 2026
Examiner Interview Summary
Apr 22, 2026
Applicant Interview (Telephonic)
May 19, 2026
Request for Continued Examination
May 22, 2026
Response after Non-Final Action
Jul 15, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

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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
75%
Grant Probability
78%
With Interview (+3.0%)
2y 4m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1436 resolved cases by this examiner. Grant probability derived from career allowance rate.

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