Prosecution Insights
Last updated: April 19, 2026
Application No. 18/689,333

CONSTANT VELOCITY JOINT FOR PROPELLER SHAFT AND PROPELLER SHAFT

Non-Final OA §102
Filed
Mar 05, 2024
Examiner
BINDA, GREGORY JOHN
Art Unit
3679
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Hitachi Astemo, Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
93%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
1456 granted / 1798 resolved
+29.0% vs TC avg
Moderate +12% lift
Without
With
+11.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
41 currently pending
Career history
1839
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
19.4%
-20.6% vs TC avg
§102
39.5%
-0.5% vs TC avg
§112
36.4%
-3.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1798 resolved cases

Office Action

§102
Information Disclosure Statement The listing of references in the PCT international search report is not considered to be an information disclosure statement (IDS) complying with 37 CFR 1.98. 37 CFR 1.98(a)(2) requires a legible copy of: (1) each foreign patent; (2) each publication or that portion which caused it to be listed; (3) for each cited pending U.S. application, the application specification including claims, and any drawing of the application, or that portion of the application which caused it to be listed including any claims directed to that portion, unless the cited pending U.S. application is stored in the Image File Wrapper (IFW) system; and (4) all other information, or that portion which caused it to be listed. In addition, each IDS must include a list of all patents, publications, applications, or other information submitted for consideration by the Office (see 37 CFR 1.98(a)(1) and (b)), and MPEP § 609.04(a), subsection I. states, “the list ... must be submitted on a separate paper.” Therefore, the references cited in the international search report have not been considered. Applicant is advised that the date of submission of any item of information in the international search report will be the date of submission of the IDS for purposes of determining compliance with the requirements for the IDS with 37 CFR 1.97, including all timing statement requirements of 37 CFR 1.97(e). See MPEP § 609.05(a). The listing of references in the specification as at paragraphs 0002-0004 is not a proper information disclosure statement. 37 CFR 1.98(b) requires a list of all patents, publications, or other information submitted for consideration by the Office, and MPEP § 609.04(a) states, "the list may not be incorporated into the specification but must be submitted in a separate paper." Therefore, unless the references have been cited by the examiner on form PTO-892, they have not been considered. Specification The disclosure is objected to because the word “cage” is misspelled at the second to last line of page 3. The abstract of the disclosure is objected to because it is not written in clear narrative form. It is instead written in the form of a claim. A corrected abstract of the disclosure is required and must be presented on a separate sheet, apart from any other text. See MPEP § 608.01(b). Claim Objections Claim 10 is objected to because in the last line the word “shaft” should be inserted prior to “side”. Claim Rejections - 35 USC § 102 Claims 9-10 & 12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hayashi, US 5,186,687. Claims 9 & 12. Hayashi discloses a propeller shaft (col. 1, lines 7-9), the propeller shaft comprising: a first propeller shaft (5) of the propeller shaft; a second propeller shaft (6) provided at an opposite position to the first propeller shaft of the propeller shaft; and a constant velocity joint disposed between the first propeller shaft and the second propeller shaft to connect the first propeller shaft and the second propeller shaft, the constant velocity joint including: an outer race member (1) formed into a cylindrical shape (see Fig. 1), to which the first propeller shaft is connected; a cage (4) provided on an inner peripheral side (13) of the outer race member and provided with a window portion (45, col. 4, line 68) that retains a ball member (3); and an inner race member (2) provided on an inner peripheral side (43, col. 4, line 66) of the cage and connected to the second propeller shaft, the outer race member including an outer race groove portion (15) provided at an inner periphery of the outer race member and provided in a recessed manner at a predetermined angle with respect to a rotational axis direction of the constant velocity joint (see Fig. 2), the ball member being disposed in the outer race groove portion (see Fig. 1), the inner race member including: an inner race groove portion (24) provided at an outer periphery of the inner race member in a recessed manner so as to intersect with the outer race groove portion, the inner race groove portion in which the ball member is disposed (see Fig. 4), and a recessed portion (26) formed on the second propeller shaft side in a bottom portion of the inner race groove portion to have a smaller diameter (col. 4, lines 44-47) than rest of the bottom portion of the inner race groove portion, wherein the recessed portion is so formed that distance between the recessed portion and a rotational axis of the constant velocity joint is decreased as the recessed portion approaches the second propeller shaft in the rotational axis direction (see Fig. 5), and wherein the recessed portion is formed into an arc-like shape (col.4, lines 48-49). Claim 10. Figs. 1 & 4-5 show the recessed portion (26) is provided in each of the bottom portion of the inner race groove portion (24) situated on the second propeller shaft (6) side and the bottom portion of the inner race groove portion situated on the first propeller shaft (5) side in the rotational axis direction. Allowable Subject Matter Claim 11 is 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. The following is a statement of reasons for the indication of allowable subject matter: Hayashi does not show or suggest its inner race member (2) with a small diameter portion and a jig engagement portion. Okazaki, US 2021/0293282 appears top show its inner race (20) with a feature (22, 23) similar to small diameter portion and a jig engagement portion, but does not show or suggest a recessed portion formed in a bottom portion of the inner race groove portion (21) to have a smaller diameter than rest of the bottom portion of the inner race groove portion. Aoki, US 2024/0418224 shows similarly. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Each of Westercamp and Handa shows a constant velocity joint comprising a recessed portion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Greg Binda whose telephone number is (571)272-7077. The examiner can normally be reached 9:30-5:30 et. 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, Matthew Troutman can be reached at 571-270-3654. 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. /Greg Binda/Primary Examiner, Art Unit 3679
Read full office action

Prosecution Timeline

Mar 05, 2024
Application Filed
Feb 20, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601379
CONSTANT VELOCITY JOINT AND DRIVESHAFT INCLUDING SAME
2y 5m to grant Granted Apr 14, 2026
Patent 12577977
INTEGRATED COMPOSITE DRIVE SHAFTS
2y 5m to grant Granted Mar 17, 2026
Patent 12571431
FLEXIBLE METALLIC COUPLINGS FOR DRIVE SHAFTS
2y 5m to grant Granted Mar 10, 2026
Patent 12571432
UNIVERSAL JOINT ASSEMBLY FOR SURGICAL TOOLS
2y 5m to grant Granted Mar 10, 2026
Patent 12560205
CONSTANT VELOCITY JOINT AND DRIVESHAFT INCLUDING SAME
2y 5m to grant Granted Feb 24, 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
93%
With Interview (+11.7%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1798 resolved cases by this examiner. Grant probability derived from career allow rate.

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