Where does Sumitomo Metal Mining Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumitomo Metal Mining Co., Ltd. ranks #889 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 Sumitomo Metal Mining Co., Ltd. hold?

Sumitomo Metal Mining Co., Ltd. holds 511 US utility patents granted 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 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Sumitomo Metal Mining Co., Ltd.'s recent grant velocity is -7% 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 Sumitomo Metal Mining Co., Ltd.'s patents?

Sumitomo Metal Mining Co., Ltd.'s patents average 8.8 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Metal Mining Co., Ltd.

Q: 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, ranking #28 of 2,332 assignees active in that subclass. Grants appear in 94 CPC subclasses total.

USPTO PatentsView assignee record - 511 granted patents across 94 technology areas, recorded in grant years 2015–2025. 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: H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumitomo ranks #889 of 49,997 tracked US assignees by granted-patent volume, with 511 patents across 94 technology areas.

#889
of 49,997 US assignees by volume: Top 5%
by Innovation Score (57.2/100): 8.8
avg claims per patent: -7%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R889 · Foreign Corporation #889 · 511 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 511 grants
TOP-DECILE #889/49,997
PHOTO-FINISH Jiangnan University
CPC-WIDE H01M · 94 areas
INNOV-PAR 57.2/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -7% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Jiangnan University (±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 Sumitomo’s 57.2 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 21.5 pts (38%) Velocity 5.4 pts (9%) Breadth 25.0 pts (44%) Claim depth 5.3 pts (9%)

Qualcomm Incorporated · highest

85
CDW · near

57
H B Fuller · near

57
LNW Gaming · near

57
Sumitomo Metal Mining · this assignee

57
Taylor Made Golf · near

57
3D Lighting… · lowest

7

What this shows Sumitomo's Innovation Score is 57.2/100 (top 5% 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 Sumitomo?

Each dot is one of Sumitomo’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). Sumitomo’s own 8.8 claims/patent is at or below the 14.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Sumitomo's grant cadence moved

Between 2020–2024, Sumitomo Metal Mining Co., Ltd. received 230 grants versus 246 in 2015–2019 (-7% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 63 grants and bottomed in 2015 at 38. Lead class H01M accounts for 49.5% of the portfolio across 94 subclasses. Volume neighbours: Emory University (#885) and Novo Nordisk A/S (#893).

Sumitomo's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumitomo Metal Mining Co., Ltd. moved from 162 to 131 grants (0.81x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,812. See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumitomo, neither rank-band nor same-CPC leaders (those blocks stay above). In H01M (Processes OR Means), Sumitomo ranks #28 of 2,332 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Taylor Made Golf Company, Inc. 57 LNW Gaming, Inc. 57 H.B. Fuller Company 57 CDW LLC 57

Similar claim depth

Nearest assignees by average claims per patent (8.8 here).

Fujimori Kogyo Co., Ltd. 8.8 avg Doosan Corporation 8.8 avg Johnson & Johnson Consumer Inc. 8.8 avg Mitsubishi Hitachi Power Systems, Ltd. 8.8 avg

Sumitomo's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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 · 2015–2025

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%
2025partial year	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

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

Sumitomo Metal Mining Co., Ltd.'s patent record in context - here's where to go next.

Sumitomo Metal Mining Co., Ltd.'s lead technology class is H01M (Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy), 49.5% of its portfolio - see every assignee active in that class. Explore H01M
Ranked #889 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumitomo Metal Mining Co., Ltd. against Emory University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 57.2/100 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.