USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Light Metal Industries, Ltd.

USPTO PatentsView assignee record - 8 granted patents across 15 technology areas, active 2015–2019. 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

16.0

Avg claims per patent

-100%

5-year filing velocity

The verdict

Sumitomo holds 8 US patents across 15 technology areas, rank #33,281 of 50,000 tracked assignees.

#33,281
of 50,000 US assignees by volume: Top 64%
by Innovation Score (30.9/100): 16.0
avg claims per patent: -100%
filing velocity, last 5 yrs

Portfolio overview

Sumitomo Light Metal Industries, Ltd. has been granted 8 US utility patents between 2015 and 2019, placing Sumitomo Light Metal Industries, Ltd. at rank #33,281 across all assignees tracked by PlainPatent. This portfolio spans 15 distinct Cooperative Patent Classification (CPC) subclasses, averaging 16.0 claims per patent with primary concentration in C22C (ALLOYS). As a Foreign Corporation, Sumitomo Light Metal Industries, Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Sumitomo sits between Subchondral Solutions, Inc. (8 patents, rank #33,277) and Sundiode Korea (8 patents, rank #33,285) - the closest US assignees by grant volume. The composite Innovation Score of 30.9/100 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 0 grants, compared with 8 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. Sumitomo Light Metal Industries, Ltd.'s 16.0 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 15 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumitomo Light Metal Industries, Ltd. against peers pursuing similar technology classes.

Subchondral Solut…

8
Subtle Medical

8
Sudzucker Aktieng…

8
SUEZ Environment

8
SUN Industries

8
SUN Pharmaceutica…

8
Suncall (SZ)

8
Sundiode Korea

8
Sumitomo Light Me… ◀

8

What this shows Sumitomo holds 8 patents at rank #33,281, 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 #33,281 in granted patent volume.

Leaders in C22C (Alloys)

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)

31 Top 64% higher than 36% 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

Sumitomo Light Metal Industries, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	62.5%
2016	1	12.5%
2019	2	25.0%

Which technologies does Sumitomo Light Metal Industries, Ltd. patent most?

C22C - ALLOYS 6

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 5

F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 4

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 4

B21D - WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL 4

F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 3

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 3

C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR 2

B21B - ROLLING OF METAL 1

C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS 1

Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS 1

B62D - MOTOR VEHICLES; TRAILERS 1

E04C - STRUCTURAL ELEMENTS; BUILDING MATERIALS 1

B23P - METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 1

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 1

Top 15 of 15 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#33,281

Across all tracked assignees

Innovation Score

30.9 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 Sumitomo Light Metal Industries, Ltd. hold?

Sumitomo Light Metal Industries, Ltd. holds 8 US granted patents filed between 2015 and 2019, spanning 15 technology areas.

What is Sumitomo Light Metal Industries, Ltd.'s Innovation Score?

Sumitomo Light Metal Industries, Ltd. has an Innovation Score of 30.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumitomo Light Metal Industries, Ltd. focus on?

Sumitomo Light Metal Industries, Ltd.'s top technology area is C22C (ALLOYS) with 6 patents. The company has filed patents in 15 CPC subclasses total.

Is Sumitomo Light Metal Industries, Ltd.'s patent filing rate increasing or decreasing?

Sumitomo Light Metal Industries, Ltd.'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 Sumitomo Light Metal Industries, Ltd.'s patents?

Sumitomo Light Metal Industries, Ltd.'s patents average 16.0 claims each. This falls within the standard range, providing solid legal coverage.

How is the Sumitomo Light Metal Industries, 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 8 grants land it in the top 64% 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 #33,281 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.