USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Electric Sintered Alloy, Ltd.

USPTO PatentsView assignee record - 87 granted patents across 34 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B22F (WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

8.1

Avg claims per patent

+148%

5-year filing velocity

The verdict

Sumitomo holds 87 US patents across 34 technology areas, rank #4,132 of 50,000 tracked assignees.

#4,132
of 50,000 US assignees by volume: Top 15%
by Innovation Score (49.5/100): 8.1
avg claims per patent: +148%
filing velocity, last 5 yrs

Portfolio overview

Sumitomo Electric Sintered Alloy, Ltd. has been granted 87 US utility patents between 2015 and 2025, placing Sumitomo Electric Sintered Alloy, Ltd. at rank #4,132 across all assignees tracked by PlainPatent. This portfolio spans 34 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.1 claims per patent with primary concentration in B22F (WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER). As a Foreign Corporation, Sumitomo Electric Sintered Alloy, Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Sumitomo sits between Orbital ATK, Inc. (87 patents, rank #4,128) and Tamron Co., Ltd. (87 patents, rank #4,136) - the closest US assignees by grant volume. The composite Innovation Score of 49.5/100 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 62 grants, compared with 25 in the 2015–2019 window, a +148% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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 Electric Sintered Alloy, Ltd.'s 8.1 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 34 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumitomo Electric Sintered Alloy, Ltd. against peers pursuing similar technology classes.

Orbital ATK

87
Panasonic Energy

87
Rani Therapeutics

87
Sumitomo Electric…

87
Suzhou Lekin Semi…

87
Sensirion

87
Shockwave Medical

87
Tamron

87
Sumitomo Electric… ◀

87

What this shows Sumitomo holds 87 patents at rank #4,132, 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 #4,132 in granted patent volume.

Leaders in B22F (Working Metallic Powder)

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)

49 Top 15% higher than 85% 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 Electric Sintered Alloy, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	2.3%
2016	3	3.4%
2017	1	1.1%
2018	2	2.3%
2019	17	19.5%
2020	4	4.6%
2021	11	12.6%
2022	11	12.6%
2023	13	14.9%
2024	17	19.5%
2025	6	6.9%

Which technologies does Sumitomo Electric Sintered Alloy, Ltd. patent most?

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 41

C22C - ALLOYS 27

H02K - DYNAMO-ELECTRIC MACHINES 15

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 14

F16H - GEARING 8

B30B - PRESSES IN GENERAL 7

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 7

F04C - ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS 7

B23B - TURNING; BORING 6

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 5

B23F - MAKING GEARS OR TOOTHED RACKS 4

F01C - ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 4

B23Q - DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING ; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT 3

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 3

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 3

Top 15 of 34 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#4,132

Across all tracked assignees

Innovation Score

49.5 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 Electric Sintered Alloy, Ltd. hold?

Sumitomo Electric Sintered Alloy, Ltd. holds 87 US granted patents filed between 2015 and 2025, spanning 34 technology areas.

What is Sumitomo Electric Sintered Alloy, Ltd.'s Innovation Score?

Sumitomo Electric Sintered Alloy, Ltd. has an Innovation Score of 49.5 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 Electric Sintered Alloy, Ltd. focus on?

Sumitomo Electric Sintered Alloy, Ltd.'s top technology area is B22F (WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER) with 41 patents. The company has filed patents in 34 CPC subclasses total.

Is Sumitomo Electric Sintered Alloy, Ltd.'s patent filing rate increasing or decreasing?

Sumitomo Electric Sintered Alloy, Ltd.'s recent filing velocity is +148% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Sumitomo Electric Sintered Alloy, Ltd.'s patents?

Sumitomo Electric Sintered Alloy, Ltd.'s patents average 8.1 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sumitomo Electric Sintered Alloy, 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 87 grants land it in the top 15% 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 #4,132 of 50,000. Top 50 holders
Most of this portfolio concentrates in B22F - see who else leads that technology area. B22F 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.