USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Metal Mining Co., Ltd.

USPTO PatentsView assignee record - 511 granted patents across 94 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01M (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY).

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

Explore the portfolio See the ranking

511

Total patents granted

CPC technology areas

8.8

Avg claims per patent

+8%

5-year filing velocity

The verdict

Sumitomo holds 511 US patents across 94 technology areas, rank #889 of 50,000 tracked assignees.

#889
of 50,000 US assignees by volume: Top 5%
by Innovation Score (57.2/100): 8.8
avg claims per patent: +8%
filing velocity, last 5 yrs

Portfolio overview

Sumitomo Metal Mining Co., Ltd. has been granted 511 US utility patents between 2015 and 2025, placing Sumitomo Metal Mining Co., Ltd. at rank #889 across all assignees tracked by PlainPatent. This portfolio spans 94 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.8 claims per patent with primary concentration in H01M (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY). As a Foreign Corporation, Sumitomo Metal Mining Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Sumitomo sits between Emory University (512 patents, rank #885) and Novo Nordisk A/s (503 patents, rank #893) - the closest US assignees by grant volume. The composite Innovation Score of 57.2/100 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. Between 2020 and 2025 the company received 265 grants, compared with 246 in the 2015–2019 window, a +8% 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. Sumitomo Metal Mining Co., Ltd.'s 8.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 94 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumitomo Metal Mining Co., Ltd. against peers pursuing similar technology classes.

Emory University

512
Kennametal

512
Jiangnan Universi…

511
Nicoventures Trad…

511
Sumitomo Metal Mi… ◀

511
Entegris

509
Nuvasive

504
KLA

503
Novo Nordisk A/S

503

What this shows Sumitomo holds 511 patents at rank #889, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumitomo

By rank, the assignees closest to #889 in granted patent volume.

Leaders in H01M (Processes OR Means)

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

Sumitomo's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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

Sumitomo Metal Mining Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	38	7.4%
2016	38	7.4%
2017	53	10.4%
2018	54	10.6%
2019	63	12.3%
2020	61	11.9%
2021	38	7.4%
2022	44	8.6%
2023	40	7.8%
2024	47	9.2%
2025	35	6.8%

Which technologies does Sumitomo Metal Mining Co., Ltd. patent most?

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 253

C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 249

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 243

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 231

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 147

C22B - PRODUCTION AND REFINING OF METALS ; PRETREATMENT OF RAW MATERIALS 110

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 45

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 40

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 38

H01B - CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES 34

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 34

C22C - ALLOYS 33

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 31

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 30

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 29

Top 15 of 94 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#889

Across all tracked assignees

Innovation Score

57.2 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 Sumitomo Metal Mining Co., Ltd. hold?

Sumitomo Metal Mining Co., Ltd. holds 511 US granted patents filed between 2015 and 2025, spanning 94 technology areas.

What is Sumitomo Metal Mining Co., Ltd.'s Innovation Score?

Sumitomo Metal Mining Co., Ltd. has an Innovation Score of 57.2 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumitomo Metal Mining Co., Ltd. focus on?

Sumitomo Metal Mining Co., Ltd.'s top technology area is H01M (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY) with 253 patents. The company has filed patents in 94 CPC subclasses total.

Is Sumitomo Metal Mining Co., Ltd.'s patent filing rate increasing or decreasing?

Sumitomo Metal Mining Co., Ltd.'s recent filing velocity is +8% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Sumitomo Metal Mining Co., Ltd.'s patents?

Sumitomo Metal Mining Co., Ltd.'s patents average 8.8 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sumitomo Metal Mining 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.

How to use this portfolio

Sumitomo's 511 grants land it in the top 5% 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 - Sumitomo ranks #889 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01M - see who else leads that technology area. H01M 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.