Prosecution Insights
Last updated: April 19, 2026
Application No. 18/856,519

CROWN-TYPE RETAINER FOR BALL BEARING, AND BALL BEARING

Non-Final OA §103
Filed
Oct 11, 2024
Examiner
NGUYEN, AIMEE TRAN
Art Unit
3617
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Nsk Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 0m
To Grant
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
115 granted / 142 resolved
+29.0% vs TC avg
Strong +19% interview lift
Without
With
+18.9%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
35 currently pending
Career history
177
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
40.6%
+0.6% vs TC avg
§102
31.5%
-8.5% vs TC avg
§112
25.4%
-14.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 142 resolved cases

Office Action

§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 . Drawings Figures 12-15 should be designated by a legend such as --Prior Art-- because only that which is old is illustrated. See MPEP § 608.02(g). Corrected drawings in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. The replacement sheet(s) should be labeled “Replacement Sheet” in the page header (as per 37 CFR 1.84(c)) so as not to obstruct any portion of the drawing figures. If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 (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 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 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Doyer (US 20100046875 A1) in view of Tanaka (JP 2007327514 A). Regarding claim 1, Doyer discloses (n figs. 1-4) a crown cage (4) for a ball bearing (fig. 1) comprising: an annular main portion (7); a plurality of pillar portions (8) protruding in an axial direction at predetermined intervals in a circumferential direction from the main portion (7); and a pocket (9) formed between the adjacent pillar portions (8) and having a spherical concave surface having a spherical shape capable of holding a ball (3), wherein the pillar portion (8) includes a pair of claw portions (11) having tip end portions (tips of 11) arranged at intervals therebetween and a connection portion (12) connecting the pair of claw portions (11), and a distance from an outer circumferential surface of the pocket (9) to a center of the crown cage (4) for a ball bearing (fig. 1) is larger than a distance from an outer circumferential surface of the pillar portion (8) to the center (in fig. 3, it can be seen that the base part 7 of pocket 9 has a larger distance than the pillar 8). Doyer does not disclose an inlet portion having a width shorter than a diameter of the ball and for inserting the ball is provided between the tip end portions of the two adjacent claw portions constituting the pocket. Tanaka teaches (in fig. 4) an inlet portion (space between 16a and 16b) having a width (W) shorter than a diameter (Da) of the ball (14) and for inserting the ball (14) is provided between the tip end portions (ends of 16a and 16b) of the two adjacent claw portions (para. [0030]) constituting the pocket for the purpose of keeping the balls (14) in the pocket (12, para. [0031]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have the inlet portion, as taught by Tanaka, in the crown cage of Doyer for the purpose of keeping the balls in the pocket (para. [0031]). Regarding claim 3, Doyer in view of Tanaka teaches (in Doyer fig. 1) a ball bearing (fig. 1) comprising: an outer ring (1); an inner ring (2); a plurality of the balls (3) arranged between the outer ring (1) and the inner ring (2); and the crown cage (4) for a ball bearing (fig. 1) according to claim 1. Claim(s) 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over Doyer (US 20100046875 A1) in view of Tanaka (JP 2007327514 A) and in further view of Kikuchi (JP 2004084770 A). Regarding claim 2, Doyer in view of Tanaka teaches (in fig. 3) the crown cage for a ball bearing according to claim 1, a convex portion (13) is provided on a bottom surface of the main portion (7), and at least a portion of the convex portion (13) overlaps the pocket (10) in the circumferential direction and a radial direction. Doyer in view of Tanaka does not teach the convex portion protruding in the axial direction. Kikuchi teaches (in figs. 1 and 2) a convex portion (16) protruding in the axial direction is provided on a bottom surface of the main portion (14) for the purpose of ensuring the strength of the pocket when it is subjected to load (para. [0021]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have the convex portion protrude in the axial direction, as taught by Kikuchi, in the crown cage of Doyer in view of Tanaka for the purpose of ensuring the strength of the pocket when it is subjected to load (para. [0021]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Achinami (JP 2003269465 A) discloses a cage for a ball bearing. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AIMEE T NGUYEN whose telephone number is (571)272-5250. The examiner can normally be reached M-F 10-7 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, John Olszewski can be reached at 571-272-2706. 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. /AIMEE TRAN NGUYEN/Examiner, Art Unit 3617 /JOHN OLSZEWSKI/Supervisory Patent Examiner, Art Unit 3617
Read full office action

Prosecution Timeline

Oct 11, 2024
Application Filed
Feb 17, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601377
SUSPENSION BEARING UNIT WITH GASKET
2y 5m to grant Granted Apr 14, 2026
Patent 12590605
CROWN-TYPE RETAINER FOR BALL BEARINGS, AND BALL BEARING
2y 5m to grant Granted Mar 31, 2026
Patent 12584520
BEARING ASSEMBLY FOR A CONVERTER
2y 5m to grant Granted Mar 24, 2026
Patent 12583455
LONGITUDINAL CONTROL FEEDBACK COMPENSATION DURING BRAKE-TO-STEER
2y 5m to grant Granted Mar 24, 2026
Patent 12553473
THRUST BEARING
2y 5m to grant Granted Feb 17, 2026
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
81%
Grant Probability
99%
With Interview (+18.9%)
2y 0m
Median Time to Grant
Low
PTA Risk
Based on 142 resolved cases by this examiner. Grant probability derived from career allow rate.

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