Prosecution Insights
Last updated: October 25, 2026

Nippon Piston Ring Co. Ltd.

Technology area: Transportation, E-Commerce & Mechanical Systems

1 pending office actions • 1 art units • 1 examiners • 0 of 1 (0%) have an AI response strategy ready • 2 patents granted in the last 365 days

Analysis

Nippon Piston Ring Co. Ltd. has 1 pending office action in the Transportation, E-Commerce & Mechanical Systems technology area. This single action is assigned to 1 distinct examiner, CUMAR, NATHAN, within 1 distinct art unit. CUMAR, NATHAN is the busiest examiner with 1 pending office action, representing the total pending workload for the company.

The prosecution profile is focused, with 1 pending office action being the only active case. The assignment to 1 distinct examiner and 1 distinct art unit means there is no diversity in the current examination of the company's Transportation, E-Commerce & Mechanical Systems technology. Practitioners have a single point of contact for the company's entire pending patent portfolio. This concentration in 1 distinct art unit with 1 distinct examiner allows for a highly targeted prosecution effort for the single pending office action. The alignment of 1 pending office action with 1 distinct examiner ensures that the prosecution strategy remains consistent and direct.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

1
Total Pending OAs
1
Non-Final OAs
0
Final Rejections
0
Advisory / Quayle

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

0
Hard (0%)
1
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (100%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
100% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

10 h
Manual time on pending OAs
2 h
Time saved (low, 20%)
4 h
Time saved (mid, 35%)
0.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CUMAR, NATHAN 1 78.8% +14.6%

Interview Candidates (1)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
19107245 SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM CUMAR, NATHAN —

Top Art Units

Art UnitApps
3675 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19107245 SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM CUMAR, NATHAN 3675 §103 Non-Final OA — Pending Feb 27, 2025

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Frequently Asked Questions

How many pending USPTO office actions does Nippon Piston Ring Co. Ltd. have?

Nippon Piston Ring Co. Ltd. has 1 pending office actions as of October 2026, spread across 1 art units and 1 examiners.

Which USPTO examiner handles the most Nippon Piston Ring Co. Ltd. applications?

Nathan Cumar has the most, with 1 of Nippon Piston Ring Co. Ltd.'s pending office actions.

What technology area are Nippon Piston Ring Co. Ltd.'s patent applications in?

Mostly Transportation, E-Commerce & Mechanical Systems (USPTO Tech Center 3600), based on where its pending office actions are examined.

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