Prosecution Insights
Last updated: October 02, 2026
Application No. 18/519,410

CARBON DIOXIDE ADSORBENT AND CARBON DIOXIDE ADSORPTION-DESORPTION DEVICE

Non-Final OA §102
Filed
Nov 27, 2023
Priority
Feb 21, 2023 — JP 2023-025440
Examiner
NGUYEN, CAM N
Art Unit
1736
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kabushiki Kaisha Toshiba
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
1097 granted / 1294 resolved
+19.8% vs TC avg
Moderate +12% lift
Without
With
+12.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
40 currently pending
Career history
1330
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
31.8%
-8.2% vs TC avg
§102
30.2%
-9.8% vs TC avg
§112
27.8%
-12.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1294 resolved cases

Office Action

§102
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 . DETAILED ACTION Response to Election/Restrictions 1. Claims 1-9 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention(s), there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 09/01/2026. 2. Claim 10 is withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention(s), there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 09/01/2026. Status of Application 3. This application was filed on 11/27/2023. Claims 1-10 were originally presented in this application for examination. Claims 1-10 are currently pending in this application for examination. Information Disclosure Statement 4. The information disclosure statement (IDS) submitted on 11/27/2023, 03/05/2024, 07/30/2024, and 03/30/2026 have been made of record. The submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements have been considered by the examiner. An initialed copy of the IDS accompanies this office action. Specification 5. The examiner has not checked the specification to the extent necessary to determine the presence of all possible minor errors (grammatical, typographical, and idiomatic). Cooperation of the applicant(s) is requested in correcting any errors of which applicant(s) may become aware of in the specification, in the claims and in any further amendment(s) that applicant(s) may file. Applicant(s) is also requested to complete the status of the copending applications referred to in the specification by their Attorney Docket Number or Application Serial Number, if any. The status of the parent application(s) and/or any other application(s) cross-referenced to this application, if any, should be updated in a timely manner. Claim Rejections - 35 USC § 102(a)(1) 6. 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. Claim(s) 1-9 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by WO 2013/025999 A1. The claimed invention relates to a carbon dioxide adsorbent, which is capable of adsorbing and desorbing carbon dioxide, and comprises one or more cyclic disulfide structures (as recited in instant claim 1). WO 2013/025999 A1 discloses disulfide as a precursor for capture (adsorb) and release (desorb) of carbon dioxide (see Abstract). Regarding claims 1, 2, & 5, the reference teaches the claimed carbon dioxide adsorbent comprises cyclic disulfide (see Abstract; p. 25, claim 4). The reference further discloses Fig. 8 shows a cyclic voltammogram illustrating the change in electrochemistry for bis(4-aminophenyl)disulfide without CO2 and with CO2 (see [0057]). Regarding claims 3 & 9, the disclosed adsorbent is able to perform oxidation-reduction reaction by electrochemical (see p. 20, [0053]-[0054]). The disulfide disclosed would also exhibit an oxidation-reduction potential higher than that of oxygen as well because it is the same adsorbent. Regarding claim 4, the disulfide precursor has a structure where each R is independently a functional group, such as an alkyl, aryl, heteroalkyl, or heteroaryl functional group, attached to one sulfur of a disulfide (see p. 8, [0029]). Regarding claims 6-8, it is considered the disclosed disulfide has a porous metal-organic framework, a covalent-organic framework, and a polymer including a molecule containing the cyclic disulfide structure as a unit structure in view of the same disulfide disclosed and claimed. Claims 1-9 are unpatentable as being anticipated by WO 2013/025999 A1. Citations 7. The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. All references are cited for related art. See PTO-892 Form prepared. WO 2013/025999 A1 (relates to a disulfide as a precursor for capture (adsorb) and release (desorb) of carbon dioxide). Conclusion 8. Claims 1-10 are pending. Claims 1-9 are rejected. Claim 10 is withdrawn. No claims are allowed. Contacts 9. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Primary Examiner CAM N. NGUYEN whose telephone number is (571)272-1357. The examiner can normally be reached on M-F (8:30 am – 5:00 pm) at alternative worksite or at cam.nguyen@uspto.gov. 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, Anthony Zimmer, can be reached at 571-270-3591. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Cam N. Nguyen/Primary Examiner, Art Unit 1736 /CNN/ September 22, 2026
Read full office action

Prosecution Timeline

Nov 27, 2023
Application Filed
Sep 24, 2026
Non-Final Rejection mailed — §102 (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
85%
Grant Probability
97%
With Interview (+12.3%)
2y 6m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1294 resolved cases by this examiner. Grant probability derived from career allowance rate.

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