USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nippon Steel & Sumikin Coated Sheet Corporation

USPTO PatentsView assignee record - 9 granted patents across 11 technology areas, active 2015–2019. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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 EVAP).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.3

Avg claims per patent

-100%

5-year filing velocity

The verdict

Nippon holds 9 US patents across 11 technology areas, rank #29,545 of 50,000 tracked assignees.

#29,545
of 50,000 US assignees by volume: Top 86%
by Innovation Score (24.1/100): 7.3
avg claims per patent: -100%
filing velocity, last 5 yrs

Portfolio overview

Nippon Steel & Sumikin Coated Sheet Corporation has been granted 9 US utility patents between 2015 and 2019, placing Nippon Steel & Sumikin Coated Sheet Corporation at rank #29,545 across all assignees tracked by PlainPatent. This portfolio spans 11 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.3 claims per patent with primary concentration in 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 EVAP). As a Foreign Corporation, Nippon Steel & Sumikin Coated Sheet Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Nippon sits between Ningbo Xingwei Cutting-tools Technology Co., Ltd. (9 patents, rank #29,541) and Nobelpharma Co., Ltd. (9 patents, rank #29,549) - the closest US assignees by grant volume. The composite Innovation Score of 24.1/100 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 0 grants, compared with 9 in the 2015–2019 window, a -100% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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 & Sumikin Coated Sheet Corporation's 7.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 11 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nippon Steel & Sumikin Coated Sheet Corporation against peers pursuing similar technology classes.

Ningbo Xingwei Cu…

9
Ningxia Orient Ta…

9
Nippon ITF

9
Nippon Paint Mari…

9
Nippon Yttrium

9
Nitero PTY

9
NKT Cables Group…

9
Nobelpharma

9
Nippon Steel & Su… ◀

9

What this shows Nippon holds 9 patents at rank #29,545, 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 #29,545 in granted patent volume.

Leaders in C23C (Coating Metallic Material)

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)

24 Top 86% higher than 14% 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 · 2015–2019

Grants by year

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

View data table

Nippon Steel & Sumikin Coated Sheet Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	33.3%
2016	2	22.2%
2017	1	11.1%
2018	2	22.2%
2019	1	11.1%

Which technologies does Nippon Steel & Sumikin Coated Sheet Corporation patent most?

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 5

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 4

B05D - PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 3

C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 3

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 2

E04D - ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

E04F - FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS 1

C22C - ALLOYS 1

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 1

Top 11 of 11 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#29,545

Across all tracked assignees

Innovation Score

24.1 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 & Sumikin Coated Sheet Corporation hold?

Nippon Steel & Sumikin Coated Sheet Corporation holds 9 US granted patents filed between 2015 and 2019, spanning 11 technology areas.

What is Nippon Steel & Sumikin Coated Sheet Corporation's Innovation Score?

Nippon Steel & Sumikin Coated Sheet Corporation has an Innovation Score of 24.1 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 & Sumikin Coated Sheet Corporation focus on?

Nippon Steel & Sumikin Coated Sheet Corporation's top technology area is 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) with 5 patents. The company has filed patents in 11 CPC subclasses total.

Is Nippon Steel & Sumikin Coated Sheet Corporation's patent filing rate increasing or decreasing?

Nippon Steel & Sumikin Coated Sheet Corporation's recent filing velocity is -100% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Nippon Steel & Sumikin Coated Sheet Corporation's patents?

Nippon Steel & Sumikin Coated Sheet Corporation's patents average 7.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Nippon Steel & Sumikin Coated Sheet 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 9 grants land it in the top 86% 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 #29,545 of 50,000. Top 50 holders
Most of this portfolio concentrates in C23C - see who else leads that technology area. C23C 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

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.