Prosecution Insights
Last updated: July 17, 2026
Application No. 18/845,447

THERMAL ENERGY TRANSFER DEVICE

Non-Final OA §102§103
Filed
Sep 10, 2024
Priority
Mar 14, 2022 — GB 2203521.6 +1 more
Examiner
JOHNSON, RASHAD H
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Gkn Aerospace Services Limited
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
465 granted / 578 resolved
+12.4% vs TC avg
Moderate +12% lift
Without
With
+12.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
16 currently pending
Career history
594
Total Applications
across all art units

Statute-Specific Performance

§103
61.9%
+21.9% vs TC avg
§102
35.6%
-4.4% vs TC avg
§112
1.6%
-38.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 578 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 . Remarks Office Action is in response to the Preliminary Amendment filed 9/10/2024. Claims 1-23 have been cancelled. Claims 24-43 are new. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statements (IDS) submitted on 9/10/2024 and 10/21/2024 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claims 25, 27, 34, and 42 are objected to because of the following informalities: Claim 25: “same material as a coil of an electrically drivable motor” should read -- same material as the coil of the electrically drivable motor--. Claim 27: “litz wires” should read –Litz wires--. Claim 34: “arranged to thermally communicate with at least one coil of an electrically drivable motor” should read -- arranged to thermally communicate with the at least one coil of said electrically drivable motor—. Claim 42: “litz wires” should read –Litz wires--. Appropriate correction is required. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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) 24, 27-30, 32, 35, and 38-43 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Pourrahimi et al. (US 8275429; IDS; 429’). In claim 24, 429’ discloses (Fig. 1-3) a thermal energy transfer device (100) for transferring thermal energy from a coil (20) of an electrically drivable motor (Col. 6, ln. 52-60), the device (100) comprising: a plurality of thermally conductive members (13) arranged to thermally communicate with at least one coil (20) of an electrically drivable motor; and, a thermally conductive portion (22) connected to the plurality of thermally conductive members (13), wherein each of the plurality of thermally conductive members (13) is directly electrically insulated (Col. 5, ln. 9-18) from any other of the plurality of thermally conductive members (13). In claim 27, 429’ discloses wherein the plurality of thermally conductive members (13) are Litz wires (Col. 3, ln. 5-8). In claim 28, 429’ discloses wherein the plurality of thermally conductive members (13) are formed from high purity aluminum (Col. 5, ln. 32-51). In claim 29, 429’ discloses a cryogen source (24) containing a cryogen (Col. 5, ln. 32-51), wherein the thermally conductive portion (13) is in thermal communication with the cryogen. In claim 30, 429’ discloses wherein at least a portion of the plurality of thermally conductive members (13) is arranged into a cable (Col. 1, ln. 43-67). In claim 32, 429’ discloses wherein each of the plurality of thermally conductive members (13) has an outer layer of electrically insulating material (Col. 3, ln. 5-25). In claim 34, 429’ discloses (Fig. 1-3) a thermal energy transfer device (100) for transferring thermal energy from a coil (20) of an electrically drivable motor (Col. 6, ln. 52-60), the device (100) comprising: a plurality of thermally conductive members (13) arranged to thermally communicate with the at least one coil (20) of said electrically drivable motor (Col. 6, ln. 52-60); and, a thermally conductive portion (101; Col. 3, ln. 5-25) connected to the plurality of thermally conductive members (13), wherein a layer of insulating material (101) is arranged between at least a portion of any adjacent pair of the plurality of thermally conductive members (13). In claim 35, 429’ discloses (Fig. 1-3) a cooling arrangement (100) for an electrical coil winding (20) of an electric motor (Col. 6, ln. 52-60), the cooling arrangement comprising: a plurality of elongate thermal conductors (13) arranged adjacent to at least a portion of the inner surfaces of the electrical coil winding (20), wherein each of said plurality of elongate thermal conductors (13) is electrically insulated (via 101) from both (a) other adjacent elongate thermal conductors (13) and (b) the electrical coil winding (20). In claim 38, 429’ discloses at least one heat sink (22) connected to each of the plurality of elongate thermal conductors (13), wherein the heat sink (22) is connected at ends of thermal paths of each of the plurality of elongate thermal conductors (13). In claim 39, 429’ discloses wherein the at least one heat sink (22) is axially located on at least one side of the electrical coil winding (20). In claim 40, 429’ discloses wherein the plurality of elongate thermal conductors (13) are in the form of wires (Fig. 2(b)). In claim 41, 429’ discloses wherein the plurality of elongate thermal conductors (13) are arranged into a cable (Col. 3, ln. 5-7). In claim 42, 429’ discloses wherein the plurality of elongate thermal conductors (13) are in the form of Litz wires (Col. 3, ln. 5-7). In claim 43, 429’ discloses wherein the plurality of elongate thermal conductors (13) are arranged in close alignment and contact to the inner surface of the electrical coil winding (20). 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 25 and 36 are rejected under 35 U.S.C. 103 as being unpatentable over Pourrahimi et al. (US 8275429; IDS; 429’) in view of Randall et al. (EP 1257043). In claim 25, 429’ teaches the device of claim 24, with the exception of wherein the plurality of thermally conductive members are formed from a same material as the coil of the electrically drivable motor. However, Randall teaches wherein the plurality of thermally conductive members can be a metallic material so as it conducts heat ([0002, 0028]). Therefore in view of Randall, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to help efficiently transmit heat from the coils (Randall; [0028]). In claim 36, Randall teaches the arrangement of claim 35, with the exception of wherein the electrical coil winding and the plurality of elongate thermal conductors are formed of a same material. However, Randall teaches wherein the plurality of thermally conductive members can be a metallic material so as it conducts heat ([0002, 0028]). Therefore in view of Randall, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to help efficiently transmit heat from the coil windings (Randall; [0028]). Claim(s) 26, 31, 33, and 37 are rejected under 35 U.S.C. 103 as being unpatentable over Pourrahimi et al. (US 8275429; IDS; 429’). In claim 26, 429’ teaches the device of claim 24, with the exception of wherein the plurality of thermally conductive members are elongate and have a diameter of 0.1 mm. However, 429’ teaches that the diameter of the thermally conductive members are part of the assembly of the coil having a diameter of 20cm. Therefore in view of 429’, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to provide a particular amount thermal management to the device for providing a certain magnetic field strength (Col.5, ln. 32-51), and since it has been held that discovering an optimum value of a result effective variable involves only routine skill in the art. In re Boesch, 617 F.2d 272, 205 USPQ 215 (CCPA 1980). In claim 31, 429’ teaches the device of claim 24, with the exception of that the plurality of thermally conductive members experiences an eddy current heating power of 0.1 Watts. However, 429’ teaches that the plurality of thermally conductive members (13) can experience an eddy current heating power of tens of Watts (Col.5, ln. 32-51). Therefore in view of 429’, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to provide a particular amount thermal management to the device (Col.5, ln. 32-51), and since it has been held that discovering an optimum value of a result effective variable involves only routine skill in the art. In re Boesch, 617 F.2d 272, 205 USPQ 215 (CCPA 1980). In claim 33, 429’ teaches the device of claim 32, with the exception of wherein each of the plurality of thermally conductive members has an outer layer of epoxy resin. However, 429’ further teaches epoxy resin can be utilized for thermal management (Col. 5, ln. 32-51). Therefore in view of 429’, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to provide a particular amount thermal management to the device. In claim 37, 429’ teaches the device of claim 35, with the exception of wherein the plurality of thermally conductive members are elongate and have a diameter of 0.1 mm. However, 429’ teaches that the diameter of the thermally conductive members are part of the assembly of the coil having a diameter of 20cm. Therefore in view of 429’, it would have been obvious to one of ordinary skill in the art before the effective filing date to have arrived at the claimed invention, in order to provide a particular amount thermal management to the device for providing a certain magnetic field strength (Col.5, ln. 32-51), and since it has been held that discovering an optimum value of a result effective variable involves only routine skill in the art. In re Boesch, 617 F.2d 272, 205 USPQ 215 (CCPA 1980). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Schulz et al. (US 2024/0097530) teaches an electric machine including a flow path for coolant fluid, a housing sealed off in relation to the flow path, a power supply unit, and at least one coil. Takahashi et al. (US 2021/0384784) teaches a rotating electrical machine including a magnetic field-producing unit and an armature. Any inquiry concerning this communication or earlier communications from the examiner should be directed to RASHAD H JOHNSON whose telephone number is (571)272-1231. The examiner can normally be reached 9:30am-5pm. 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, Christopher Koehler can be reached at 571-272-3560. 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. RASHAD H. JOHNSON Examiner Art Unit 2834 /RASHAD H JOHNSON/Examiner, Art Unit 2834
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Prosecution Timeline

Sep 10, 2024
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

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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
80%
Grant Probability
93%
With Interview (+12.4%)
2y 5m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 578 resolved cases by this examiner. Grant probability derived from career allowance rate.

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