Prosecution Insights
Last updated: April 19, 2026
Application No. 17/925,094

CARBON FIXATION APPARATUS FOR POWER GENERATION

Non-Final OA §103§112
Filed
Nov 14, 2022
Examiner
TAI, XIUYU
Art Unit
1795
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Aonbarr Inc.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
586 granted / 1004 resolved
-6.6% vs TC avg
Strong +50% interview lift
Without
With
+49.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
38 currently pending
Career history
1042
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
43.7%
+3.7% vs TC avg
§102
17.8%
-22.2% vs TC avg
§112
29.0%
-11.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1004 resolved cases

Office Action

§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 . 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 3 and 7 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. Claim 3 recites “with a pulse power wave” in line 3 and line 4. There is insufficient antecedent basis for this limitation in the claim. Appropriate correction/clarification is required. Due to the dependency to the parent claim, claim 7 is rejected. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-2, and 4-6 are rejected under 35 U.S.C. 103 as being unpatentable over Bucher et al (WO 2009/073048) in view of Shimizu (PG-PUB US 2010/0212620). Regarding claim 1, Bucher et al disclose an apparatus for treating carbon dioxide (ABSTRACT). The apparatus comprises (1) a plasma chamber for receiving carbon dioxide (i.e., a reaction chamber …, Figures 1 & 3, page 7 line 10-17 & page 10 line 9-24); (2) a supply source for supplying carbon dioxide to the plasma chamber (i.e., a supply device…, Figurer 1, page 7 line 6-10); (3) a power supply for generating plasma within the plasma chamber (Figures 1 & 3, pages 7 & 10); (4) a turbine for receiving the energy generated from the plasma chamber (i.e., a power generation device …, Figure 1, page 8line 7-10); (5) a gas output for discharging rejected gas (i.e., a vent device …, Figure 1, page 8, line 7-20). It should be noted that “a reaction of carbon dioxide with magnesium is caused” is related to a manner of operating the device, which does not differentiate the apparatus claim from the prior art (MPEP 2114). Moreover, “carbon dioxide with magnesium” is a material worked upon the device which does not limit the apparatus claim from the prior art (MPEP 2115). Furthermore, the plasma chamber of Bucher is fully capable of carrying out a reaction of carbon dioxide with magnesium therewithin. Bucher teaches that the carbon dioxide is treated with plasma (Figures 1 & 3, pages 7 & 10), but does not teach a pulse wave generator being used for generating streamer. However, Shimizu discloses an apparatus for treating carbon dioxide (ABSTRACT). Shimizu teaches that a pulse streamer generator is used to generate streamer discharge to treat carbon dioxide (Figures 1 & 4, paragraphs [0062] – [0063]). Shimizu further indicates that the plasma igniter capable of generating pulse streamer discharge can generate a large amount radial active species with a low voltage to significantly reduce carbon dioxide emission amount (paragraphs [0007], [0023] & [0063]). Therefore, it would be obvious for one having ordinary skill in the art to utilize a pulse wave generator to generate streamer as suggested by Shimizu in order to further reduce carbon dioxide emission amount with low voltage within the device of Bucher. Regarding claim 2, the limitation of “the introduction gas … has a carbon dioxide concentration …” is material worked upon the device. It has been held that material worked upon a device does not limit the apparatus claim from the prior art (MPEP 2115). Regarding claims 4 and 5, Bucher teaches that a separation unit downstream from the plasma chamber is provided to separate carbon dioxide from carbon monoxide and a recirculation loop is provided for re-supplying the separated carbon dioxide to the supply source (Figure 1, page 8 line 10-18). Allowable Subject Matter Claims 3 and 7 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. Conclusion Claims 1-7 are rejected. Any inquiry concerning this communication or earlier communications from the examiner should be directed to XIUYU TAI whose telephone number is (571)270-1855. The examiner can normally be reached Mon.-Fri. 9:00-5:00. 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, Luan Van can be reached at 571-272-8521. 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. /XIUYU TAI/Primary Examiner, Art Unit 1795
Read full office action

Prosecution Timeline

Nov 14, 2022
Application Filed
Oct 29, 2025
Non-Final Rejection — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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METHOD FOR SURFACE TREATMENT
2y 5m to grant Granted Mar 24, 2026
Patent 12582829
PLASMA TREATMENT DEVICES AND METHODS OF USE THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12583770
DEVICE FOR TREATMENT OF LIQUIDS AND THE METHOD OF TREATMENT OF LIQUIDS WITH USE OF THIS DEVICE
2y 5m to grant Granted Mar 24, 2026
Patent 12578267
CARBON MEASUREMENTS IN AQUEOUS SAMPLES USING OXIDATION AT ELEVATED TEMPERATURES AND PRESSURES CREATED BY RESISTIVE HEATING
2y 5m to grant Granted Mar 17, 2026
Patent 12551861
APPARATUS FOR TREATING MATERIALS WITH PLASMA
2y 5m to grant Granted Feb 17, 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
58%
Grant Probability
99%
With Interview (+49.8%)
3y 3m
Median Time to Grant
Low
PTA Risk
Based on 1004 resolved cases by this examiner. Grant probability derived from career allow rate.

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