Where does Sumida Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumida Corporation ranks #2,865 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 Sumida Corporation hold?

Sumida Corporation holds 134 US utility patents granted 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 (top 18% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #19 of 1,360 assignees active in that subclass. Grants appear in 32 CPC subclasses total.

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

Sumida Corporation's recent grant velocity is +17% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

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

Sumida Corporation's patents average 9.5 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumida Corporation

USPTO PatentsView assignee record - 134 granted patents across 32 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: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumida ranks #2,865 of 49,997 tracked US assignees by granted-patent volume, with 134 patents across 32 technology areas.

#2,865
of 49,997 US assignees by volume: Top 18%
by Innovation Score (47.6/100): 9.5
avg claims per patent: +17%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2865 · Foreign Corporation #2,865 · 134 grants

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

GRANTS-MID 134 grants
TOP-DECILE #2,865/49,997
PHOTO-FINISH Immunomedics
CPC-FOCUS H01F · 32 areas
INNOV-PAR 47.6/100
CLAIMS-PAR 9.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +17% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Immunomedics, Inc. (±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 Sumida’s 47.6 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 16.9 pts (36%) Velocity 5.0 pts (11%) Breadth 20.0 pts (42%) Claim depth 5.7 pts (12%)

Qualcomm Incorporated · highest

85
FPT Industrial S P A · near

48
QlikTech Internation… · near

48
Sanofi Biotechnology · near

48
Short Brothers · near

48
Sumida · this assignee

48
3D Lighting… · lowest

7

What this shows Sumida's Innovation Score is 47.6/100 (top 18% 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 Sumida?

Each dot is one of Sumida’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). Sumida’s own 9.5 claims/patent is at or below the 14.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sumida's grants concentrate

Sumida Corporation is a focused PatentsView assignee: 32 CPC subclasses with 56.7% of grants classified under H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties). Peak complete grant year is 2021 (20 grants) versus a trough of 8 in 2016. By volume, Sumida sits between Immunomedics, Inc. and ViOptix, Inc..

Sumida's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumida Corporation moved from 48 to 36 grants (0.75x 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 #1,990. See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumida, neither rank-band nor same-CPC leaders (those blocks stay above). In H01F (Magnets), Sumida ranks #19 of 1,360 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (48 here).

QlikTech International AB 48 FPT Industrial S.P.A 48 Sanofi Biotechnology 48 Short Brothers PLC 48

Similar claim depth

Nearest assignees by average claims per patent (9.5 here).

Sugino Machine Limited 9.5 avg National University Corporation Yokohama National University 9.5 avg Eugene Technology Co., Ltd. 9.5 avg Korea Institute Of Geoscience And Mineral Resources 9.5 avg

Sumida's Innovation Score vs. every tracked assignee

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

48 Top 18% higher than 82% 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

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%
2025partial year	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

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

Sumida Corporation's patent record in context - here's where to go next.

Sumida Corporation's lead technology class is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties), 56.7% of its portfolio - see every assignee active in that class. Explore H01F
Ranked #2,865 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumida Corporation against Immunomedics, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.6/100 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.