Where does Sumco Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumco Corporation ranks #1,326 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 Sumco Corporation hold?

Sumco Corporation holds 320 US utility patents granted between 2015 and 2025, spanning 51 technology areas.

What is Sumco Corporation's Innovation Score?

Sumco Corporation has an Innovation Score of 56.8 out of 100 (top 6% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumco Corporation focus on?

Sumco Corporation's top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 183 patents. Grants appear in 51 CPC subclasses total.

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

Sumco Corporation's recent grant velocity is -4% 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 Sumco Corporation's patents?

Sumco Corporation's patents average 8.5 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 Sumco 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

Sumco Corporation

USPTO PatentsView assignee record - 320 granted patents across 51 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Sumco ranks #1,326 of 49,997 tracked US assignees by granted-patent volume, with 320 patents across 51 technology areas.

#1,326
of 49,997 US assignees by volume: Top 6%
by Innovation Score (56.8/100): 8.5
avg claims per patent: -4%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1326 · Foreign Corporation #1,326 · 320 grants

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

GRANTS-MID 320 grants
TOP-DECILE #1,326/49,997
PHOTO-FINISH Converse
CPC-WIDE H01L · 51 areas
INNOV-PAR 56.8/100
CLAIMS-PAR 8.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT -4% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Converse 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.

Qualcomm Incorporated · highest

85
Op-hygiene IP · near

57
Optum Technology · near

57
Sumco · this assignee

57
Winkk · near

57
Mettler-Toledo · near

57
3D Lighting… · lowest

7

What this shows Sumco's Innovation Score is 56.8/100 (top 6% 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.

How Sumco's grant cadence moved

Between 2020–2024, Sumco Corporation received 146 grants versus 152 in 2015–2019 (-4% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2017 at 38 grants and bottomed in 2020 at 23. Lead class H01L accounts for 57.2% of the portfolio across 51 subclasses. Volume neighbours: Coplus Inc. (#1,321) and Kiekert AG (#1,329).

Sumco's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumco Corporation moved from 88 to 89 grants (1.01x 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 #1,155. See the growth leaderboard.

Coplus

321
Nchain Licensing

321
Converse

320
Southeast Univers…

320
Sandia

320
Sumco ◀

320
Amkor Technology

319
Itron

319
Kiekert

319

What this shows Sumco holds 320 patents at rank #1,325, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumco

By rank, the assignees closest to #1,325 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumco, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Op-hygiene IP GMBH 57 Optum Technology, Inc. 57 Winkk, Inc. 57 Mettler-Toledo GmbH 57

Similar claim depth

Nearest assignees by average claims per patent (8.5 here).

IFM Electronic GmbH 8.5 avg Aisan Kogyo Kabushiki Kaisha 8.5 avg Mitsubishi Materials Corporation 8.5 avg Razor USA LLC 8.5 avg

Sumco's Innovation Score vs. every tracked assignee

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

57 Top 6% higher than 94% 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

Sumco Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	29	9.1%
2016	29	9.1%
2017	38	11.9%
2018	25	7.8%
2019	31	9.7%
2020	23	7.2%
2021	34	10.6%
2022	29	9.1%
2023	28	8.8%
2024	32	10.0%
2025partial year	22	6.9%

Which technologies does Sumco Corporation patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 183

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 179

B24B - Machines, Devices, OR Processes FOR Grinding OR Polishing ; Dressing OR Conditioning OF Abrading SURFACES; Feeding OF Grinding, Polishing, OR Lapping Agents 51

H10D - Inorganic Electric Semiconductor Devices 49

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 43

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 40

Y10T - Technical Subjects Covered BY Former US Classification 35

C03B - Manufacture, Shaping, OR Supplementary Processes 35

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 25

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 24

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 16

H01J - Electric Discharge Tubes OR Discharge Lamps 10

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 9

B28D - Working Stone OR Stone-like Materials 8

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 7

Top 15 of 51 technology areas

Where it ranks

Overall rank by patents

#1,326

of 49,997 tracked assignees

Innovation Score

56.8 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

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

Sumco Corporation's lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 57.2% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #1,326 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumco Corporation against Coplus Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 56.8/100 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.