Prosecution Insights
Last updated: April 19, 2026
Application No. 18/814,598

DOUBLE ROTATION INDEXING DEVICE

Non-Final OA §103
Filed
Aug 26, 2024
Examiner
DIAZ, THOMAS C
Art Unit
3617
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Tsudakoma Kogyo Kabushiki Kaisha
OA Round
3 (Non-Final)
68%
Grant Probability
Favorable
3-4
OA Rounds
2y 9m
To Grant
87%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allow Rate
714 granted / 1045 resolved
+16.3% vs TC avg
Strong +19% interview lift
Without
With
+18.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
21 currently pending
Career history
1066
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
37.5%
-2.5% vs TC avg
§102
33.0%
-7.0% vs TC avg
§112
25.9%
-14.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1045 resolved cases

Office Action

§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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 01/30/2026 has been entered. 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 is/are rejected under 35 U.S.C. 103 as being unpatentable over JPS6078233 U in view of Tatsuda (USpgpub 20020094900). Regarding claim 1, JPS 6078233 discloses a double rotation indexing device having two sets of rotation indexing units, where a number of sets of the rotation indexing units provided in the double rotation indexing device is only two (seen in fig.2 and fig.3; there is a two indexing device set up), each of the rotation indexing units comprising: a main shaft (31) rotatably supported in a frame (seen in figures) and having one end side to which a rotation target member (rotary table 3) is attached; and a drive transmission mechanism (various shafts/gears) configured to transmit rotation of an output shaft of a drive motor to the main shaft, the drive transmission mechanism including: a drive shaft (44) configured to being be rotationally driven by the drive motor (42); a disk-shaped driven member (gear 43) attached to the main shaft; and a drive member (worm 45) provided on the drive shaft and having a spiral groove (it’s a worm gear and thus would have said groove) formed to engage directly or indirectly with the driven member, the drive shafts of both rotation indexing units being connected by a connecting member (46), and the drive motor being connected to an end portion (seen in fig.3), on an opposite side to the connecting member side, of the drive shaft of one rotation indexing unit, wherein the other end side of the drive shaft in one rotation indexing unit is connected to the other end side of the drive shaft in an other rotation indexing unit (seen in fig.3). JPS ‘233 fails to explicitly disclose the type of bearings supporting the shafts and in particular the drive shaft being supported on one end side by the frame via a bearing holder having a built-in thrust bearing and being supported on an other end side by the frame via a radial bearing. Tatsuda teaches and/or suggests, within the same field of double indexing units, the concept of utilizing a drive shaft being supported on one end side by the frame via a bearing holder (fig.1, 30) having a built-in thrust bearing (fig.1, 28) and being supported on an other end side by the frame via a radial bearing (fig.1, 28; as clearly seen in fig.1, the bearings closest to coupling 20 are both radial bearings). Tatsuda further teaches the bearings to both shafts of the double indexing unit as seen in fig.1. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified the drive shaft assemblies disclosed in JPS ‘233 to utilize the bearing arrangement as taught/suggested in Tatsuda in order to provide the predictable results of adequately supporting the loads on the shafts and distributing said load appropriately. The bearings also would provide support and make the assembly as a whole robust and sturdy, in addition, the use of said bearings is common knowledge in the art. Response to Arguments Applicant’s arguments with respect to claim(s) 1 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to THOMAS C DIAZ whose telephone number is (571)270-5461. The examiner can normally be reached M-F 9am-6pm. 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. /THOMAS C DIAZ/Primary Examiner, Art Unit 3617
Read full office action

Prosecution Timeline

Aug 26, 2024
Application Filed
Aug 01, 2025
Non-Final Rejection — §103
Oct 22, 2025
Response Filed
Nov 07, 2025
Final Rejection — §103
Jan 30, 2026
Request for Continued Examination
Feb 24, 2026
Response after Non-Final Action
Mar 11, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12590629
DIFFERENTIAL HOUSING
2y 5m to grant Granted Mar 31, 2026
Patent 12584553
OIL PASSAGE STRUCTURE FOR AUTOMATIC TRANSMISSION
2y 5m to grant Granted Mar 24, 2026
Patent 12578096
Control device for a cooktop, and cooktop
2y 5m to grant Granted Mar 17, 2026
Patent 12576945
PEDAL WITH ADJUSTABLE ROTATION BRAKE
2y 5m to grant Granted Mar 17, 2026
Patent 12565921
FLYWHEEL VACUUM ENCLOSURE AND ADJUSTMENT SYSTEM
2y 5m to grant Granted Mar 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
68%
Grant Probability
87%
With Interview (+18.7%)
2y 9m
Median Time to Grant
High
PTA Risk
Based on 1045 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month