USPTO 2015–2025 USPTO PatentsView Foreign Corporation

NOK Corporation

USPTO PatentsView assignee record - 425 granted patents across 103 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F16J (PISTONS ; CYLINDERS; SEALINGS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

425

Total patents granted

103

CPC technology areas

6.2

Avg claims per patent

+31%

5-year filing velocity

The verdict

NOK holds 425 US patents across 103 technology areas, rank #1,029 of 50,000 tracked assignees.

#1,029
of 50,000 US assignees by volume: Top 6%
by Innovation Score (55.9/100): 6.2
avg claims per patent: +31%
filing velocity, last 5 yrs

Portfolio overview

NOK Corporation has been granted 425 US utility patents between 2015 and 2025, placing NOK Corporation at rank #1,029 across all assignees tracked by PlainPatent. This portfolio spans 103 distinct Cooperative Patent Classification (CPC) subclasses, averaging 6.2 claims per patent with primary concentration in F16J (PISTONS ; CYLINDERS; SEALINGS). As a Foreign Corporation, NOK Corporation is one of the broader-portfolio assignees in the PatentsView dataset. By volume, NOK sits between PGS Geophysical AS (427 patents, rank #1,025) and Isuzu Motors Limited (423 patents, rank #1,033) - the closest US assignees by grant volume. The composite Innovation Score of 55.9/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 241 grants, compared with 184 in the 2015–2019 window, a +31% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. NOK Corporation's 6.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark NOK Corporation against peers pursuing similar technology classes.

PGS Geophysical AS

427
University OF Sou…

427
Gracenote

426
Hitachi Chemical

425
Zoom Video Commun…

425
NOK ◀

425
IOWA State Univer…

424
SRI International

424
Isuzu Motors

423

What this shows NOK holds 425 patents at rank #1,029, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near NOK

By rank, the assignees closest to #1,029 in granted patent volume.

Leaders in F16J (Pistons)

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

NOK's Innovation Score vs. every tracked assignee

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

56 Top 6% higher than 94% of 50,000 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 · 2015–2025

Grants by year

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

View data table

NOK Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	25	5.9%
2016	36	8.5%
2017	30	7.1%
2018	32	7.5%
2019	61	14.4%
2020	54	12.7%
2021	30	7.1%
2022	59	13.9%
2023	36	8.5%
2024	42	9.9%
2025	20	4.7%

Which technologies does NOK Corporation patent most?

F16J - PISTONS ; CYLINDERS; SEALINGS 257

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 65

F16C - SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 62

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 59

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 48

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 45

F16F - SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION 38

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 36

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 31

G03G - ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 31

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 27

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 25

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 22

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 20

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 20

Top 15 of 103 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#1,029

Across all tracked assignees

Innovation Score

55.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does NOK Corporation hold?

NOK Corporation holds 425 US granted patents filed between 2015 and 2025, spanning 103 technology areas.

What is NOK Corporation's Innovation Score?

NOK Corporation has an Innovation Score of 55.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does NOK Corporation focus on?

NOK Corporation's top technology area is F16J (PISTONS ; CYLINDERS; SEALINGS) with 257 patents. The company has filed patents in 103 CPC subclasses total.

Is NOK Corporation's patent filing rate increasing or decreasing?

NOK Corporation's recent filing velocity is +31% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for NOK Corporation's patents?

NOK Corporation's patents average 6.2 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the NOK Corporation 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.

How to use this portfolio

NOK's 425 grants land it in the top 6% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - NOK ranks #1,029 of 50,000. Top 50 holders
Most of this portfolio concentrates in F16J - see who else leads that technology area. F16J leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

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

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.