Prosecution Insights
Last updated: April 19, 2026
Application No. 18/162,860

SELECTIVE HEAT TREATMENT OF METALS USING MULTIPLE INDUCTION HEATING COILS

Non-Final OA §102§103
Filed
Feb 01, 2023
Examiner
MORALES, RICARDO D
Art Unit
1738
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Rtx Corporation
OA Round
2 (Non-Final)
81%
Grant Probability
Favorable
2-3
OA Rounds
2y 9m
To Grant
98%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
350 granted / 431 resolved
+16.2% vs TC avg
Strong +17% interview lift
Without
With
+17.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
32 currently pending
Career history
463
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
56.6%
+16.6% vs TC avg
§102
21.5%
-18.5% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 431 resolved cases

Office Action

§102 §103
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 . Election/Restrictions Claims 11-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 04/16/2025. Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after allowance or after an Office action under Ex Parte Quayle, 25 USPQ 74, 453 O.G. 213 (Comm'r Pat. 1935). Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, prosecution in this application has been reopened pursuant to 37 CFR 1.114. Applicant's submission filed on 12/22/2025 has been entered. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 3-6, 10 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Arnett et al. (US20210180169A1). Regarding Claims 1, 6 and 10, Arnett teaches heat treatment assembly for a workpiece comprising: First and second thermal applicators in thermal communication and which apply respective heat treatment of different temperatures to different regions in a workpiece (See claims 13 and 18) where the thermal applicators include heating elements of induction heating coils (See Claim 4); where the heating of the workpiece is configured to heat first and second ends (112 and 116) of the workpiece 102 (See Figure 3); where the thermal heat treatment is done simultaneously (in a single step process) [0027]; while the workpiece being acted upon is not taught to be a bar specifically, the exemplary workpiece of a turbomachine part as shown in figure 3 is similar to that of a bar in that under normal operation of the heat assembly, the heat assembly of the prior art is considered to be configured to operate on a bar. Regarding Claim 3, the language “to achieve specific microstructure and mechanical properties” is considered intended use and does not impart patentable weight as any resulting microstructure and mechanical properties of the portions would read on the claim. Regarding Claim 4, the limitation of a hybrid modeling-test approach is used to achieve location specific microstructures and mechanical properties, sinch this approach is considered a mental step, it is not considered to carry patentable weight as the prior art method and system teach a product with specific microstructures and properties. Regarding Claim 5, the amperage is considered to be controlled which yields different temperatures in the different regions. 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. Claim(s) 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over Arnett et al. (US20210180169A1). Regarding Claim 2, the thermal applicators operate independently from each other [0005]; however the prior art is silent regarding if a power supply for each coil is shared or separate; however, as the applicators are taught to be independent, one of ordinary skill in the art would have been motivated to use separate power supplies for the purpose of efficiently controlling the heating zone of each thermal applicator. Claim(s) 8-9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Arnett et al. (US20210180169A1) in view of Franchet et al. (US20180371563A1). Regarding Claims 8-9, Arnett is silent regarding the limitaitons of claim 8-9, however Franchet teaches a heater system may be used to form a mechanical part with one region heated below the solvus temperature and the other region heated above the solvus temperature (abstract) for the purpose of forming a part with a gradated microstructure (abstract) and that the part may be a Nickel- chromium alloy such as Inco718 [0037]. Therefore, one of ordinary skill in the art would have been motivated to modify the apparatus of Watanabe to be configured to heat one region above solvus and the other below solvus for the purpose of forming gradated metal parts such as Ni-Cr products with regions of differing microstructures and mechanical properties. Any inquiry concerning this communication or earlier communications from the examiner should be directed to RICARDO D MORALES whose telephone number is (571)272-6691. The examiner can normally be reached Monday-Thursday 9 am- 4 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, Sally Merkling can be reached at 5712726297. 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. /RICARDO D MORALES/Examiner, Art Unit 1738
Read full office action

Prosecution Timeline

Feb 01, 2023
Application Filed
Apr 23, 2025
Non-Final Rejection — §102, §103
Aug 28, 2025
Response Filed
Dec 22, 2025
Request for Continued Examination
Jan 03, 2026
Response after Non-Final Action
Jan 06, 2026
Non-Final Rejection — §102, §103 (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

2-3
Expected OA Rounds
81%
Grant Probability
98%
With Interview (+17.0%)
2y 9m
Median Time to Grant
Moderate
PTA Risk
Based on 431 resolved cases by this examiner. Grant probability derived from career allow rate.

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