Prosecution Insights
Last updated: July 17, 2026
Application No. 18/976,675

REFRIGERANTS FOR AND METHODS OF COOLING ELECTRONICS

Non-Final OA §102§103
Filed
Dec 11, 2024
Priority
Dec 15, 2023 — provisional 63/610,458
Examiner
LANE, DEVON
Art Unit
Tech Center
Assignee
Honeywell International Inc.
OA Round
1 (Non-Final)
56%
Grant Probability
Moderate
1-2
OA Rounds
1y 9m
Est. Remaining
70%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
435 granted / 784 resolved
-4.5% vs TC avg
Moderate +14% lift
Without
With
+14.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
23 currently pending
Career history
821
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
89.4%
+49.4% vs TC avg
§102
5.1%
-34.9% vs TC avg
§112
4.1%
-35.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 784 resolved cases

Office Action

§102 §103
DETAILED ACTION 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) 1 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Papadimitriou (OH Radical Reaction Rate Coefficients, Infrared Spectrum, and Global Warming Potential of HFO-1438ezy(E); 2016). Regarding claims 1 and 9, Papadimitriou teaches that HFO-1438ezy(E) is an old and well-known refrigerant. It is inherent in the use of a refrigerant that it be used to provide cooling to an article or device being operated via transferring heat to the refrigerant. 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) 4-8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Papadimitriou. Regarding claims 4-8, Papadimitriou discusses the replacement of other refrigerants with HFO-1438ezy(E) without discussing dilution and therefore suggests the use of 100% of the material. Claim(s) 2 and 10-17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Papadimitriou in view of Juhasz (US 2023/0112841). Juhasz teaches that it is old and well-known to provide direct cooling (see immersion of device 230 in refrigerant 240) with HFO refrigerants, per claim 2; of electronic components (230), per claim 10 such as integrated circuits (chips; Para. [0004]), per claim 11; including data center servers (Para. [0004]), per claims 12-13; and electric batteries (Para. [0004]), per claims 14-15; immersion of the component (230) in refrigerant fluid (240; see Figures), per claims 16-17. It would have been obvious to one of ordinary skill to try the device and process of Juhasz with the HFO refrigerant of Papadimitriou in order to take advantage of the low global warming and ozone depletion effects of HFO-1432ezy(E). Claim(s) 3 and 18-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Papadimitriou in view of Ramanathan (US 2022/0235255). Regarding claim 3, Papadimitriou does not specify direct or indirect cooling. Ramanathan teaches that it is old and well-known to use HFO refrigerants for indirect cooling (Para. [0143]). It would have been obvious to one of ordinary skill to try the device and process of Ramanathan with the HFO refrigerant of Papadimitriou in order to take advantage of the low global warming and ozone depletion effects of HFO-1432ezy(E). Regarding claims 18-20, Papadimitriou does not specify cooling during wafer etching. Ramanathan teaches that it is old and well-known to use HFO refrigerants during wafer etching (Para. [0100] and [0104]). It would have been obvious to one of ordinary skill to try the device and process of Ramanathan with the HFO refrigerant of Papadimitriou in order to take advantage of the low global warming and ozone depletion effects of HFO-1432ezy(E). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Devon Lane whose telephone number is (571)270-1858. The examiner can normally be reached M-Th, 9-4. 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, Jerry-Daryl Fletcher can be reached at 571.270.5054. 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. /DEVON LANE/ Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Dec 11, 2024
Application Filed
Jun 11, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12677394
ISOLATION DEVICE FOR ISOLATING LEAKED LIQUID COOLANT AND ELECTRONIC EQUIPMENT INCLUDING ISOLATION DEVICE
3y 10m to grant Granted Jul 07, 2026
Patent 12674624
HEAT EXCHANGER
2y 6m to grant Granted Jul 07, 2026
Patent 12674625
PLATE HEAT EXHANGER ARRANGEMENT, USE OF IT IN EXHAUST GAS HEAT RECOVERY AND METHOD FOR RECOVERING HEAT FROM EXHAUST GAS
2y 0m to grant Granted Jul 07, 2026
Patent 12669292
PHASE CHANGE MATERIAL HEAT EXCHANGER
2y 6m to grant Granted Jun 30, 2026
Patent 12665095
HEAT TRANSFER STRUCTURE OF DIVERTOR
2y 1m to grant Granted Jun 23, 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
56%
Grant Probability
70%
With Interview (+14.4%)
3y 4m (~1y 9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 784 resolved cases by this examiner. Grant probability derived from career allowance rate.

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