Prosecution Insights
Last updated: July 17, 2026
Application No. 18/536,925

ELECTRIC MACHINE AND METHOD OF OPERATING AIRCRAFT

Final Rejection §102§103
Filed
Dec 12, 2023
Examiner
GONZALEZ QUINONES, JOSE A
Art Unit
2834
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Ge Aviation Systems Limited
OA Round
2 (Final)
76%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
892 granted / 1174 resolved
+8.0% vs TC avg
Moderate +13% lift
Without
With
+12.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
38 currently pending
Career history
1193
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
91.7%
+51.7% vs TC avg
§102
6.0%
-34.0% vs TC avg
§112
0.9%
-39.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1174 resolved cases

Office Action

§102 §103
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 . Response to Arguments Applicant’s arguments, see pages 10-11, filed 04/02/2026, with respect to claims 1-17 have been fully considered and are persuasive. The rejection of claims 1-3, 8, 15-17 has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Iketani (JP2012145022) and Lee (KR20160097589). 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) 1 and 15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Barker (GB2501952) in view of Iketani (JP2012145022) and Lee (KR20160097589). As to independent claim 1, Barker teaches an electric machine (2), comprising: a housing (10) at least partially defining a chamber (see figure 3); a chamber the chamber having an inlet (56) for a fluid passage to an exterior of the housing (10) , a rotor (24) disposed in the housing (10); the rotor (24) having an outlet (96) with a plurality of outlet portions (see figure 16) and an impeller (76) disposed at least partially in the chamber (see figure 3) and coupled with the rotor (24) the impeller (76) having a set of impeller blades (see figure 3) the set of impeller blades moving the fluid from the chamber (see figure 3) to the inlet (56) and into the fluid passage as shown in figures 3 and 16. Barker teaches the claimed limitation as discussed above except the plurality of outlet portions being disposed between respective adjacent pairs of the set of impeller blades, the plurality of outlet portions providing a fluid exiting from the rotor into the chamber. Iketeni teaches the plurality of outlet portions (24) being disposed between respective adjacent pairs of the set of impeller blades (18a) as shown in figures 1 and 2, for the advantageous benefit of providing a technology which allows the improvement of lubricity between a rotor and a fixed shaft with a simple configuration. Lee teaches the plurality of outlet portions (see annotated figure 1), the plurality of outlet portions (see annotated figure 1) providing a fluid exiting (80) from the rotor into the chamber (see annotated figure 1) as shown n figure 1, for the advantageous benefit of improving the performance of the pump and increasing the durability. PNG media_image1.png 480 520 media_image1.png Greyscale It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify Barker by using the plurality of outlet portions being disposed between respective adjacent pairs of the set of impeller blades, the plurality of outlet portions providing a fluid exiting from the rotor into the chamber, as taught by Iketeni and Lee, to provide a technology which allows the improvement of lubricity between a rotor and a fixed shaft with a simple configuration and improve the performance of the pump and increase the durability. As to claim 15/1, Barker teaches wherein the housing(10) is devoid of a pump (see page 8, Lines 1-7). Claim(s) 2-3, 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Barker (GB2501952), Iketani (JP2012145022) and Lee (KR20160097589) as applied in claim 1 above, and further in view of in view of Hathaway et al. (US PG Pub 2020/0217250). As to claim 2/1, Barker in view of Iketani and Lee teaches the claimed limitation as discussed above except wherein the fluid passage is a second fluid passage, the inlet is a second inlet, and the housing at least partially defines a first fluid passage and a second fluid passage, the second fluid passage fluidly coupled with the chamber; wherein the rotor has a third fluid passage fluidly coupled with the chamber; and wherein the electric machine further comprises: a first nozzle coupled with the housing and fluidly coupled with the first fluid passage; a first outlet defined by the first nozzle; a first inlet fluidly coupled with the first fluid passage; a second inlet and a second outlet fluidly coupled with the second fluid passage; and a second nozzle coupled with the rotor, at least partially aligned with the first nozzle, and defining a third inlet fluidly coupled with the third fluid passage; wherein the first nozzle is fluidly coupled with the second nozzle via a non- contact interface. However Hathaway et al. teaches the fluid passage (see figure 3) is a second fluid passage (96), the inlet is a second inlet, and the housing (28) at least partially defines a first fluid passage (58) and a second fluid passage (96), the second fluid passage (96) fluidly coupled with the chamber (see figure 3); wherein the rotor (32) has a third fluid passage (60) fluidly coupled with the chamber; and wherein the electric machine (10) further comprises: a first nozzle (56) coupled with the housing (28) and fluidly coupled with the first fluid passage (58); a first outlet (52) defined by the first nozzle (56); a first inlet (see annotated figure 3) fluidly coupled with the first fluid passage (58); a second inlet (see annotated figure 3) and a second outlet (see annotated figure 3) fluidly coupled with the second fluid passage (96); and a second nozzle (66) coupled with the rotor (32), at least partially aligned with the first nozzle (56), and defining a third inlet (see annotated figure 3) fluidly coupled with the third fluid passage (60); wherein the first nozzle (56) is fluidly coupled with the second nozzle (66) via a non- contact interface as shown in figure 3, for the advantageous benefit of providing a reliability improvement, by eliminating the wear interface of a seal and has thickness sufficient to provide adequate mechanical rigidity without adding unnecessary weight. PNG media_image2.png 696 556 media_image2.png Greyscale It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify Barker in view of Iketani and Lee by using the fluid passage is a second fluid passage, the inlet is a second inlet, and the housing at least partially defines a first fluid passage and a second fluid passage, the second fluid passage fluidly coupled with the chamber; wherein the rotor has a third fluid passage fluidly coupled with the chamber; and wherein the electric machine further comprises: a first nozzle coupled with the housing and fluidly coupled with the first fluid passage; a first outlet defined by the first nozzle; a first inlet fluidly coupled with the first fluid passage; a second inlet and a second outlet fluidly coupled with the second fluid passage; and a second nozzle coupled with the rotor, at least partially aligned with the first nozzle, and defining a third inlet fluidly coupled with the third fluid passage; wherein the first nozzle is fluidly coupled with the second nozzle via a non- contact interface, as taught by Hathaway et al., to provide a reliability improvement, by eliminating the wear interface of a seal and has thickness sufficient to provide adequate mechanical rigidity without adding unnecessary weight. As to claim 3/2, Barker, Iketani and Lee in view of Hathaway et al. teaches the claimed limitation as discussed above except wherein the first nozzle and the second nozzle partially overlap in a radial direction. However Hathaway et al. teaches the first nozzle (56) and the second nozzle (66) partially overlap in a radial direction as shown in figure 3, for the advantageous benefit of providing a reliability improvement, by eliminating the wear interface of a seal and has thickness sufficient to provide adequate mechanical rigidity without adding unnecessary weight. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify Barker, Iketani and Lee in view of Hathaway et al. by using the first nozzle and the second nozzle partially overlap in a radial direction, as taught by Hathaway et al., to provide a reliability improvement, by eliminating the wear interface of a seal and has thickness sufficient to provide adequate mechanical rigidity without adding unnecessary weight. Claim(s) 16-17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Barker (GB2501952), Iketani (JP2012145022) and Lee (KR20160097589) as applied in claim 1 above, and further in view of in view of Hirano (WO 2014125856). As to claim 16/1, Barker in view of Iketani and Lee teaches the claimed limitation as discussed above except the housing of the electric machine at least partially defining a first fluid passage; wherein the fluid passage is a second fluid passage and an accessory gearbox (AGB) mechanically coupled to drive the electric machine, the AGB comprising: a pump; and an AGB fluid passage fluidly coupled with the pump; wherein the AGB fluid passage is fluidly coupled with the first fluid passage of the electric machine. However Hirano teaches the housing (1) of the electric machine at least partially defining a first fluid passage (61); wherein the fluid passage is a second fluid passage (1a) and an accessory gearbox (AGB) (5) mechanically coupled to drive the electric machine (4), the AGB comprising: a pump (63); and an AGB fluid passage (62) fluidly coupled with the pump (63) ; wherein the AGB fluid passage (62) is fluidly coupled with the first fluid passage (61) of the electric machine (4) as shown in figure 7, for the advantageous benefit of providing cooling to the motor. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify Barker in view of Iketani and Lee by using the housing of the electric machine at least partially defining a first fluid passage; wherein the fluid passage is a second fluid passage and an accessory gearbox (AGB) mechanically coupled to drive the electric machine, the AGB comprising: a pump; and an AGB fluid passage fluidly coupled with the pump; wherein the AGB fluid passage is fluidly coupled with the first fluid passage of the electric machine, as taught by Hirano, to provide cooling to the motor. As to claim 17/16, Barker, Iketani and Lee in view of Hirano teaches the claimed limitation as discussed above except wherein the housing of the electric machine at least partially defines a second fluid passage the AGB includes a second AGB fluid passage fluidly coupled with the second fluid passage of the electric machine. However Hirano teaches the housing (1) of the electric machine (4) at least partially defines a second fluid passage (1b) the AGB includes a second AGB fluid passage (see figure 7) fluidly coupled with the second fluid passage (1b) of the electric machine (4) as shown in figure 7, for the advantageous benefit of providing cooling to the motor. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention was made to modify Barker, Iketani and Lee in view of Hirano by using the housing of the electric machine at least partially defines a second fluid passage the AGB includes a second AGB fluid passage fluidly coupled with the second fluid passage of the electric machine, as taught by Hirano, to provide cooling to the motor. Allowable Subject Matter Claim 4-7, 11-14, 21 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Note: claims 4-5 depend claim 3, claim 6 depends claim 2 , claim 7 depends claim 6, claim 11 depends claim 1, claims 12-13 depend claim 11, and claim 14 depends claim 13, claim 21 depends claim 1 Allows claims 9-10, Note: claims 10, depends claim 9. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSE A GONZALEZ QUINONES whose telephone number is (571)270-7850. The examiner can normally be reached Monday-Friday: 6:30-2:30 EST. 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, OLUSEYE IWARERE can be reached at (571)270-5112. 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. /JOSE A GONZALEZ QUINONES/Primary Examiner, Art Unit 2834 May 13, 2026
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Prosecution Timeline

Dec 12, 2023
Application Filed
Jan 02, 2026
Non-Final Rejection mailed — §102, §103
Apr 02, 2026
Response Filed
May 15, 2026
Final Rejection mailed — §102, §103
Jul 13, 2026
Interview Requested

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
76%
Grant Probability
89%
With Interview (+12.7%)
2y 5m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1174 resolved cases by this examiner. Grant probability derived from career allowance rate.

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