Prosecution Insights
Last updated: August 17, 2026
Application No. 18/730,155

ALKANOLAMINE-CONTAINING MEMBRANES AND METHODS OF MAKING AND USING THEREOF

Non-Final OA §102§103§112
Filed
Jul 18, 2024
Priority
Jan 18, 2022 — provisional 63/300,450 +2 more
Examiner
LAWRENCE JR, FRANK M
Art Unit
Tech Center
Assignee
The Ohio State University
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1196 granted / 1425 resolved
+23.9% vs TC avg
Strong +20% interview lift
Without
With
+19.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
26 currently pending
Career history
1438
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
33.1%
-6.9% vs TC avg
§102
27.9%
-12.1% vs TC avg
§112
25.1%
-14.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1425 resolved cases

Office Action

§102 §103 §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 . Specification The specification is objected to as failing to provide proper antecedent basis for the claimed subject matter. See 37 CFR 1.75(d)(1) and MPEP § 608.01(o). Correction of the following is required: There is no basis in the specification for the subject matter of claim 42 (a fluid selected from the group consisting of carbon dioxide, hydrogen sulfide, water, and combinations thereof). This may be added to the specification because the subject matter was in the claims as filed. 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 45 and 48 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 claims 45 and 48, 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). 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. Claim(s) 62 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by any one of WO 2021/219887 A1 or WO 2020/087067 A1. Any one of WO ‘887 or WO ‘067 teaches a gas separation membrane that is made by depositing a selective polymer on a support layer, wherein the polymer is a selective polymer matrix with nanoporous graphene oxide dispersed therein (see WO ‘887 abstract, page 13, lines 26-34, page 15, lines 27-28, figure 3; WO ‘067 abstract, page 4, lines 1-11). Claim(s) 1-5, 13, 42, 45, 48 and 51 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Francisco et al. (Membranes comprising of alkanolamines incorporated into poly(vinyl alcohol) matrix for CO2/N2 separation). Francisco et al. teach a gas permeable membrane for separating carbon dioxide from a gas mixture with nitrogen, comprising a polysulfone substrate layer, a selective poly(vinyl alcohol) (hydrophilic) matrix disposed on the support, and a mobile carrier such as monoethanolamine, 2-amino-2-metyl-1-propanol, or diethanolamine (all having a molecular weight less than 1000 Da) in the matrix layer (see abstract, sections 2, 3.1, 3.2, figures 7, 8). Regarding claims 45 and 48, the recited CO2/H2 selectivity and CO2 permeance will be inherent to the prior membrane because the same materials are used. It is noted that CO2/H2 selectivity and CO2 permeance are disclosed but for different pressures and temperature conditions and in different units. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Francisco et al. in view of WO ‘067. Francisco et al. disclose all of the limitations of the claim except that there is graphene oxide dispersed within the polymer matrix. WO ‘067 discloses a gas separation membrane as described in paragraph 8 above. It would have been obvious to a person having ordinary skill in the art at the time of the invention to modify the membrane of Francisco et al. by using the graphene oxide of WO ‘067 in order to prevent membrane compaction. Allowable Subject Matter Claims 6-12 and 18 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. Regarding claim 18, it is noted that it is assumed that the amino-silane cross-linking agent is selected from claim 13 and the other options should be canceled if claim 18 is rewritten in independent form. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The additional references listed on the attached PTO-892 form disclose gas permeable membranes. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FRANK LAWRENCE whose telephone number is (571)272-1161. The examiner can normally be reached Mon-Fri 8:30am-7pm. 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, Jennifer Dieterle can be reached at 571-270-7872. 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. /FRANK M LAWRENCE JR/Primary Examiner, Art Unit 1776 fl
Read full office action

Prosecution Timeline

Jul 18, 2024
Application Filed
Jul 13, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12702948
METHOD FOR THE SEPARATION OF PHOSPHORUS PENTAFLUORIDE FROM HYDROGEN CHLORIDE
2y 6m to grant Granted Aug 11, 2026
Patent 12697577
Air Dryer Device and Air Treatment Device
3y 1m to grant Granted Aug 04, 2026
Patent 12697576
Heat Pump-Based Water Harvesting Systems, And Methods Of Using Thereof
2y 4m to grant Granted Aug 04, 2026
Patent 12699409
OIL INJECTED AIR COMPRESSOR AND METHOD FOR CONTROLLING THE SAME, AND STORAGE MEDIUM AND ELECTRONIC DEVICE
2y 4m to grant Granted Aug 04, 2026
Patent 12697458
O2 CONCENTRATOR WITH SIEVE BED BYPASS AND CONTROL METHOD THEREOF
1y 11m to grant Granted Aug 04, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
84%
Grant Probability
99%
With Interview (+19.8%)
2y 4m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1425 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month