USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nippon Steel Stainless Steel Corporation

USPTO PatentsView assignee record - 26 granted patents across 22 technology areas, active 2020–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C22C (ALLOYS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

8.7

Avg claims per patent

5-year filing velocity

The verdict

Nippon holds 26 US patents across 22 technology areas, rank #11,743 of 50,000 tracked assignees.

#11,743
of 50,000 US assignees by volume: Top 9%
by Innovation Score (53.2/100): 8.7
avg claims per patent

Portfolio overview

Nippon Steel Stainless Steel Corporation has been granted 26 US utility patents between 2020 and 2025, placing Nippon Steel Stainless Steel Corporation at rank #11,743 across all assignees tracked by PlainPatent. This portfolio spans 22 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.7 claims per patent with primary concentration in C22C (ALLOYS). As a Foreign Corporation, Nippon Steel Stainless Steel Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Nippon sits between Monolith Materials, Inc. (26 patents, rank #11,739) and Nv Michel VAN DE Wiele (26 patents, rank #11,747) - the closest US assignees by grant volume. The composite Innovation Score of 53.2/100 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. Historical data spans 2020 through 2025, with 26 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. Nippon Steel Stainless Steel Corporation's 8.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 22 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nippon Steel Stainless Steel Corporation against peers pursuing similar technology classes.

Monolith Materials

26
Monrovia Nursery

26
Nagrastar

26
NEC Communication…

26
Nisshin Foods

26
Northwest Instrum…

26
NS Solutions

26
Michel VAN DE Wie…

26
Nippon Steel Stai… ◀

26

What this shows Nippon holds 26 patents at rank #11,743, 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 #11,743 in granted patent volume.

Leaders in C22C (Alloys)

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, filing velocity, technology breadth, and claim depth (0–100)

53 Top 9% higher than 91% 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 · 2020–2025

Grants by year

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

View data table

Nippon Steel Stainless Steel Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	7.7%
2021	2	7.7%
2022	11	42.3%
2023	3	11.5%
2024	5	19.2%
2025	3	11.5%

Which technologies does Nippon Steel Stainless Steel Corporation patent most?

C22C - ALLOYS 25

C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING 22

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 6

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 5

C23G - CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS 5

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 3

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 3

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 3

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 2

F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES 2

F17C - VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES 2

B22D - CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 2

C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS 1

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

B05D - PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 1

Top 15 of 22 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Where it ranks

Overall rank by patents

#11,743

Across all tracked assignees

Innovation Score

53.2 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 Nippon Steel Stainless Steel Corporation hold?

Nippon Steel Stainless Steel Corporation holds 26 US granted patents filed between 2020 and 2025, spanning 22 technology areas.

What is Nippon Steel Stainless Steel Corporation's Innovation Score?

Nippon Steel Stainless Steel Corporation has an Innovation Score of 53.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nippon Steel Stainless Steel Corporation focus on?

Nippon Steel Stainless Steel Corporation's top technology area is C22C (ALLOYS) with 25 patents. The company has filed patents in 22 CPC subclasses total.

Is Nippon Steel Stainless Steel Corporation's patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Nippon Steel Stainless Steel Corporation.

What does claim depth mean for Nippon Steel Stainless Steel Corporation's patents?

Nippon Steel Stainless Steel Corporation's patents average 8.7 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Nippon Steel Stainless Steel 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

Nippon's 26 grants land it in the top 9% 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 - Nippon ranks #11,743 of 50,000. Top 50 holders
Most of this portfolio concentrates in C22C - see who else leads that technology area. C22C 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.