Prosecution Insights
Last updated: October 01, 2026
Application No. 18/853,193

EDDY CURRENT DECELERATION DEVICE

Non-Final OA §103
Filed
Oct 01, 2024
Priority
Apr 20, 2022 — nonprovisional of PCTJP2022018321
Examiner
ANDREWS, MICHAEL
Art Unit
Tech Center
Assignee
NIPPON STEEL Corporation
OA Round
1 (Non-Final)
64%
Grant Probability
Moderate
1-2
OA Rounds
10m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
808 granted / 1253 resolved
+4.5% vs TC avg
Strong +24% interview lift
Without
With
+24.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
40 currently pending
Career history
1287
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
52.7%
+12.7% vs TC avg
§102
24.3%
-15.7% vs TC avg
§112
20.9%
-19.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1253 resolved cases

Office Action

§103
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 Office Action is responsive to the Applicant's communication filed 01 October 2024. In view of this communication, claims 1-4 are now pending in the application. Priority Receipt is acknowledged of papers submitted under 35 U.S.C. 119(a)-(d) or (f), 365(a) or (b), or 386(a), which papers have been placed of record in the file. Information Disclosure Statement The information disclosure statement(s) submitted on 01 October 2024, 09 October 2024, 06 June 2025, and 12 December 2025 was/were filed before mailing of the first action on the merits. Accordingly, the information disclosure statement(s) is/are being considered by the examiner. Disclosure The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant's cooperation is requested in correcting any errors of which applicant may become aware in the specification. Claim Rejections - 35 USC § 103 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 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 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) 1-4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Li et al. (CN 101359865 A), hereinafter referred to as “Li”, in view of Imanishi et al. (US 2019/0393764 A1), hereinafter referred to as “Imanishi”. Regarding claim 1, Li discloses an eddy current deceleration device [2-12] (fig. 1; ¶ 0002-0004) comprising: two deceleration device main bodies [3,4] each including a braking member [4] fixed to a propeller shaft [1] (fig. 1; ¶ 0021-0023); and PNG media_image1.png 665 566 media_image1.png Greyscale a control unit [8-12] that controls braking states of the two deceleration device main bodies [3,4] (fig. 1; ¶ 0022), wherein the two deceleration device main bodies [3,4] are arranged in different positions in an axial direction of the propeller shaft [1] (fig. 1; ¶ 0021; the two rotors are axially adjacent to one another). Li does not disclose the main bodies [3,4] each including a braking member that is fixed to a propeller shaft and has a tubular shape; and a magnet facing toward the braking member in a radial direction of the braking member. Imanishi discloses an eddy current deceleration device comprising a deceleration device main body (fig. 1), the deceleration device main body including a braking member [1] that is fixed to a propeller shaft [10] and has a tubular shape; and a magnet [3] facing toward the braking member [1] in a radial direction of the braking member [1] (fig. 1; ¶ 0062-0067). PNG media_image2.png 606 610 media_image2.png Greyscale It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to form each of the deceleration device main bodies of Li having structures including braking members and magnets as taught by Imanishi, in order to provide an electricity generating function while minimizing an increase in the number of components, ensuring smooth rotation during non-braking, and enhancing braking efficiency (¶ 0017, 0069 of Imanishi). Regarding claim 2, Li, in view of Imanishi, discloses the eddy current deceleration device according to claim 1, as stated above, wherein the control unit [8-12] is configured to be able to switch among: a first state in which both of the two deceleration device main bodies [3,4] are in braking states (¶ 0024; both clutches are engaged and “maximum braking torque” is generated); a second state in which one deceleration device main body [3,4] of the two deceleration device main bodies [3,4] is in a braking state and the other deceleration device main body [3,4] is in a non-braking state (¶ 0023; only one of the clutches is engaged); and a third state in which both of the two deceleration device main bodies [3,4] are in non-braking states (¶ 0025; neither clutch is engaged). Regarding claim 3, Li, in view of Imanishi, discloses the eddy current deceleration device according to claim 1, as stated above, wherein the control unit [8-12] is configured to be able to place the two deceleration device main bodies [3,4] into braking states alternately and consecutively (¶ 0022; the “control mechanism can independently control the working state of the two sets of rotors, so that the braking torque of the retarder can be controlled in stages”). Regarding claim 4, Li, in view of Imanishi, discloses the eddy current deceleration device according to claim 2, as stated above, wherein the control unit [8-12] is configured to be able to place the two deceleration device main bodies [3,4] into braking states alternately and consecutively (¶ 0022; the “control mechanism can independently control the working state of the two sets of rotors, so that the braking torque of the retarder can be controlled in stages”). Citation of Relevant Prior Art The prior art made of record and not relied upon is considered pertinent to applicant’s disclosure. Prior art: Imanishi et al. (US 2021/0036595 A1, US 2018/0138795 A1) discloses an eddy current decelerating apparatus similar to and from the same inventors as the present application. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Andrews whose telephone number is (571)270-7554. The examiner can normally be reached on Monday-Thursday, 8:30am-3:00pm. 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 an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Michael Andrews/ Primary Examiner, Art Unit 2834
Read full office action

Prosecution Timeline

Oct 01, 2024
Application Filed
Jun 05, 2026
Non-Final Rejection mailed — §103
Sep 03, 2026
Examiner Interview Summary
Sep 03, 2026
Applicant Interview (Telephonic)

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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
64%
Grant Probability
88%
With Interview (+24.0%)
2y 10m (~10m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1253 resolved cases by this examiner. Grant probability derived from career allowance rate.

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