USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumida Corporation

USPTO PatentsView assignee record - 134 granted patents across 32 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES).

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

Explore the portfolio See the ranking

134

Total patents granted

CPC technology areas

9.5

Avg claims per patent

+27%

5-year filing velocity

The verdict

Sumida holds 134 US patents across 32 technology areas, rank #2,864 of 50,000 tracked assignees.

#2,864
of 50,000 US assignees by volume: Top 18%
by Innovation Score (47.6/100): 9.5
avg claims per patent: +27%
filing velocity, last 5 yrs

Portfolio overview

Sumida Corporation has been granted 134 US utility patents between 2015 and 2025, placing Sumida Corporation at rank #2,864 across all assignees tracked by PlainPatent. This portfolio spans 32 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.5 claims per patent with primary concentration in H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES). As a Foreign Corporation, Sumida Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Sumida sits between Immunomedics, Inc. (134 patents, rank #2,860) and Vioptix, Inc. (134 patents, rank #2,868) - the closest US assignees by grant volume. The composite Innovation Score of 47.6/100 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 75 grants, compared with 59 in the 2015–2019 window, a +27% 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. Sumida Corporation's 9.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 32 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumida Corporation against peers pursuing similar technology classes.

Immunomedics

134
Ingenico

134
P-tech

134
Siemens Healthine…

134
Smith & Wesson

134
Tokyo Visionary O…

134
Universite DE Str…

134
Vioptix

134
Sumida ◀

134

What this shows Sumida holds 134 patents at rank #2,864, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumida

By rank, the assignees closest to #2,864 in granted patent volume.

Leaders in H01F (Magnets)

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

Sumida's Innovation Score vs. every tracked assignee

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

48 Top 18% higher than 82% 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

Sumida Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	9	6.7%
2016	8	6.0%
2017	14	10.4%
2018	13	9.7%
2019	15	11.2%
2020	13	9.7%
2021	20	14.9%
2022	12	9.0%
2023	16	11.9%
2024	8	6.0%
2025	6	4.5%

Which technologies does Sumida Corporation patent most?

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 76

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 21

G01R - MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 20

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 17

H01Q - ANTENNAS, i.e. RADIO AERIALS 16

H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 6

H05K - PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 5

H02K - DYNAMO-ELECTRIC MACHINES 5

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 5

H01R - ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 5

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 5

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 4

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 3

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 3

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 3

Top 15 of 32 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#2,864

Across all tracked assignees

Innovation Score

47.6 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 Sumida Corporation hold?

Sumida Corporation holds 134 US granted patents filed between 2015 and 2025, spanning 32 technology areas.

What is Sumida Corporation's Innovation Score?

Sumida Corporation has an Innovation Score of 47.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumida Corporation focus on?

Sumida Corporation's top technology area is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES) with 76 patents. The company has filed patents in 32 CPC subclasses total.

Is Sumida Corporation's patent filing rate increasing or decreasing?

Sumida Corporation's recent filing velocity is +27% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Sumida Corporation's patents?

Sumida Corporation's patents average 9.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sumida 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

Sumida's 134 grants land it in the top 18% 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 - Sumida ranks #2,864 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01F - see who else leads that technology area. H01F 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.