Prosecution Insights
Last updated: October 02, 2026
Application No. 18/757,122

ELECTRIC ADIABATIC HEATER FOR OLEFIN PRODUCTION

Non-Final OA §DP
Filed
Jun 27, 2024
Priority
Jul 17, 2023 — provisional 63/514,020
Examiner
DOYLE, BRANDI M
Art Unit
1771
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Lummus Technology LLC
OA Round
2 (Non-Final)
63%
Grant Probability
Moderate
2-3
OA Rounds
10m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allowance Rate
308 granted / 491 resolved
-2.3% vs TC avg
Moderate +12% lift
Without
With
+11.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
55 currently pending
Career history
524
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
62.4%
+22.4% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
22.7%
-17.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 491 resolved cases

Office Action

§DP
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 . This communication is in response to the amendment and reply filed 7/8/2026. Claims 1-20 are pending. Claims 13-20 are withdrawn. Response to Arguments Applicant’s arguments, see Reply, filed 7/8/2026, with respect to the rejection of the amended claims under 35 USC 103 have been fully considered and are persuasive. The rejection of claims 1-12 has been withdrawn. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-12 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-11 and 20 of copending Application No. 18/972,328 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because they merely overlap in scope, the instant application claiming electric heating and the copending application claiming turbomachine. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Art of Record CA 3211811, directed to electric steam heating, is the closest art of record. The art teaches heating the steam with electric heater and heating a first feed-steam mixture with an electric heater. The two streams are mixed and then the mixed stream is heating in an electric heater to the cracking temperature. The art fails to teach wherein the steam is superheated to a temperature and then mixed with the preheated feed to form a reaction mixture and increase a temperature of the hydrocarbons to a cracking temperature, and cracking the hydrocarbons to form olefins, producing a reaction effluent. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Brandi Doyle whose telephone number is (571)270-1141. The examiner can normally be reached Monday-Friday, 8:00 AM - 3:00 PM. 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, Prem Singh can be reached at (571)272-6381. 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. /BRANDI M DOYLE/Examiner, Art Unit 1771
Read full office action

Prosecution Timeline

Jun 27, 2024
Application Filed
May 20, 2026
Non-Final Rejection mailed — §DP
Jul 08, 2026
Response Filed
Sep 22, 2026
Non-Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735646
PRODUCTION OF MONOAROMATIC HYDROCARBONS FROM HYDROCARBON FEEDSTOCKS
2y 11m to grant Granted Sep 15, 2026
Patent 12703671
Process For Treating A Gas Stream From Plastic Pyrolisis And/Or Biomass Pyrolisis, And Installation For Integration Into A Steam Cracker
4y 1m to grant Granted Aug 11, 2026
Patent 12686826
HYDROCONVERSION PROCESSES WITH EBULLATED BED REACTORS AND INTER-STAGE WATER ADDITION
2y 10m to grant Granted Jul 21, 2026
Patent 12680032
HALIDES REMOVAL WASHING SYSTEM FOR A HYDROCARBON STREAM
4y 4m to grant Granted Jul 14, 2026
Patent 12637622
PRODUCTION OF HYDROCARBONS FROM RECYCLED OR RENEWABLE ORGANIC MATERIAL
5y 4m to grant Granted May 26, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
63%
Grant Probability
75%
With Interview (+11.9%)
3y 1m (~10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 491 resolved cases by this examiner. Grant probability derived from career allowance rate.

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