Where does Nippon Leakless Industry Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nippon Leakless Industry Co., Ltd. ranks #49,131 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Nippon Leakless Industry Co., Ltd. hold?

Nippon Leakless Industry Co., Ltd. holds 5 US utility patents granted between 2015 and 2022, spanning 5 technology areas.

What is Nippon Leakless Industry Co., Ltd.'s Innovation Score?

Nippon Leakless Industry Co., Ltd. has an Innovation Score of 24.4 out of 100 (14th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nippon Leakless Industry Co., Ltd. focus on?

Nippon Leakless Industry Co., Ltd.'s top technology area is F16J (Pistons ; CYLINDERS; Sealings) with 5 patents, ranking #136 of 753 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is Nippon Leakless Industry Co., Ltd.'s patent grant rate increasing or decreasing?

Nippon Leakless Industry Co., Ltd.'s recent grant velocity is -75% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Nippon Leakless Industry Co., Ltd.'s patents?

Nippon Leakless Industry Co., Ltd.'s patents average 6.0 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Nippon Leakless Industry Co., Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nippon Leakless Industry Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 5 technology areas, recorded in grant years 2015–2022. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: F16J (Pistons ; CYLINDERS; Sealings).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Nippon ranks #49,131 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 5 technology areas.

#49,131
of 49,997 US assignees by volume: 14th percentile
by Innovation Score (24.4/100): 6.0
avg claims per patent: -75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R49131 · Foreign Corporation #49,131 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #49,131/49,997
PHOTO-FINISH Ninjawav
CPC-NARROW F16J · 5 areas
INNOV-THIN 24.4/100
CLAIMS-SPARSE 6.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -75% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ninjawav, LLC (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Nippon’s 24.4 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 6.2 pts (25%) Velocity 6.7 pts (27%) Breadth 7.9 pts (32%) Claim depth 3.6 pts (15%)

Qualcomm Incorporated · highest

85
Nippon Leakless… · this assignee

24
3D Lighting… · lowest

7

What this shows Nippon's Innovation Score is 24.4/100 (14th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Nippon?

Each dot is one of Nippon’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Nippon’s own 6.0 claims/patent is at or below the 8.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Nippon vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Nippon's grants concentrate

Nippon Leakless Industry Co., Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 100% of grants classified under F16J (Pistons ; CYLINDERS; Sealings). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2016. By volume, Nippon sits between Ninjawav, LLC and Nippon Steel SG Wire Co., Ltd..

Nippon's three-year grant acceleration

Nippon Leakless Industry Co., Ltd. shows 1 grants in 2022–2024 against only 0 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Ninjawav

5
Nintex PTY

5
Nippon Carbon

5
Nippon Gasket

5
Nippon OIL Pump

5
Nippon Paper Papy…

5
Nippon Steel Coat…

5
Nippon Steel SG W…

5
Nippon Leakless I… ◀

5

What this shows Nippon holds 5 patents at rank #49,039, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nippon

By rank, the assignees closest to #49,039 in granted patent volume.

Leaders in F16J (Pistons)

Other assignees with the most granted patents in Nippon's primary technology class.

Nippon's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

24 14th percentile higher than 14% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Nippon Leakless Industry Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	40.0%
2016	1	20.0%
2018	1	20.0%
2022	1	20.0%

Which technologies does Nippon Leakless Industry Co., Ltd. patent most?

F16J - Pistons ; CYLINDERS; Sealings 5

F02F - Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines 3

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 1

F16H - Gearing 1

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

Top 5 of 5 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Nippon Leakless Industry Co., Ltd.'s patent record in context - here's where to go next.

Nippon Leakless Industry Co., Ltd.'s lead technology class is F16J (Pistons ; CYLINDERS; Sealings), 100% of its portfolio - see every assignee active in that class. Explore F16J
Ranked #49,131 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nippon Leakless Industry Co., Ltd. against Ninjawav, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.4/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.