USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumco Corporation

USPTO PatentsView assignee record - 320 granted patents across 51 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01L (SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10).

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

Explore the portfolio See the ranking

320

Total patents granted

CPC technology areas

8.5

Avg claims per patent

+11%

5-year filing velocity

The verdict

Sumco holds 320 US patents across 51 technology areas, rank #1,325 of 50,000 tracked assignees.

#1,325
of 50,000 US assignees by volume: Top 6%
by Innovation Score (56.8/100): 8.5
avg claims per patent: +11%
filing velocity, last 5 yrs

Portfolio overview

Sumco Corporation has been granted 320 US utility patents between 2015 and 2025, placing Sumco Corporation at rank #1,325 across all assignees tracked by PlainPatent. This portfolio spans 51 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.5 claims per patent with primary concentration in H01L (SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10). As a Foreign Corporation, Sumco Corporation is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Sumco sits between Coplus Inc. (321 patents, rank #1,321) and Kiekert Ag (319 patents, rank #1,329) - the closest US assignees by grant volume. The composite Innovation Score of 56.8/100 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 168 grants, compared with 152 in the 2015–2019 window, a +11% 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. Sumco Corporation's 8.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 51 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumco Corporation against peers pursuing similar technology classes.

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.

Sumco's Innovation Score vs. every tracked assignee

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

57 Top 6% higher than 94% 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

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%
2025	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

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#1,325

Across all 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?

Frequently Asked Questions

How many patents does Sumco Corporation hold?

Sumco Corporation holds 320 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing 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. The company has filed patents in 51 CPC subclasses total.

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

Sumco Corporation's recent filing velocity is +11% compared to the prior five-year period. The company is maintaining or growing its patent output.

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

Sumco Corporation's patents average 8.5 claims each. This is relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Sumco's 320 grants land it in the top 6% 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 - Sumco ranks #1,325 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01L - see who else leads that technology area. H01L 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.