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Sumco Corporation

USPTO Granted Patents = 624

% Expired Patents = 9.3

EPO Patents = 137

Trademarks = 14

Forward Citations = 1,462

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480 inventors (with patents filed for the assignee):

Toshiaki Ono (41 out of 78 patents)

Toshiaki Sudo (34 out of 48 patents)

Akihiko Endo (33 out of 38 patents)

4. Kazunari Kurita (29 out of 31 patents)

5. Keiichi Takanashi (28 out of 34 patents)

6. Hiroshi Kishi (24 out of 41 patents)

7. Wataru Sugimura (22 out of 24 patents)

8. Ken Kitahara (22 out of 23 patents)

9. Nobuyuki Morimoto (22 out of 23 patents)

10. Kazushige Takaishi (20 out of 25 patents)

11. Masataka Hourai (19 out of 30 patents)

12. Yasuhito Narushima (18 out of 37 patents)

13. Eriko Kitahara (18 out of 18 patents)

14. Naoyuki Wada (17 out of 18 patents)

15. Tomohiro Hashii (17 out of 20 patents)

Core Competencies:

Silicon Wafer

Epitaxial Growth

Vapor Deposition

Single Crystal

Polishing Method

Semiconductor Fabrication

Defect Inspection

Quartz Glass Crucible

Thermal Conductivity

Carrier Plate

Cleaning Apparatus

Convection Pattern

624 patents: Sort by Forward Citations

1. 12757678 - Packaging unit and transportation container (2026-10-06),

2. 12735802 - Quartz glass crucible, manufacturing method thereof, and manufacturing method of silicon single crystal (2026-09-15),

3. 12727417 - Wafer polishing method and silicon wafer (2026-09-01),

4. 12710347 - METHOD OF MEASURING CONTACT ANGLE OF SILICON WAFER AND METHOD OF EVALUATING SURFACE CONDITION OF SILICON WAFER (2026-08-18),

5. 12686942 - Manufacturing method of single crystals (2026-07-21),

6. 12663383 - Method of evaluating silicon single-crystal ingot, method of evaluating silicon epitaxial wafer, method of manufacturing silicon epitaxial wafer, and method of evaluating silicon mirror polished wafer (2026-06-23),

7. 12662748 - Silicon single crystal growing method (2026-06-23),

8. 12654277 - Processing condition setting apparatus, processing condition setting method, and wafer production system (2026-06-16),

9. 12635427 - Flat epitaxial wafer having minimal thickness variation (2026-05-19),

10. 12617057 - Method of creating correlation relational formula for determining polishing condition, method of determining polishing condition, and semiconductor wafer manufacturing method (2026-05-05),

11. 12604680 - Method for manufacturing group III nitride semiconductor substrate (2026-04-14),

12. 12598956 - Vapor deposition device and vapor deposition method (2026-04-07),

13. 12595585 - Heating part of silicon single crystal manufacturing device, convection pattern control method for silicon melt, silicon single crystal manufacturing method, silicon wafer manufacturing method, silicon single crystal manufacturing device, and convection pattern control system for silicon melt (2026-04-07),

14. 12583079 - Wafer polishing method and wafer polishing device (2026-03-24),

15. 12570456 - Cushioning material, packing body, and packing method (2026-03-10),

Company Overview

Sumco Corporation is a leading manufacturer specializing in silicon wafers, which are essential components in semiconductor fabrication. The company focuses on advanced technologies such as epitaxial growth, vapor deposition, and single crystal production, ensuring high-quality substrates for various electronic applications. With expertise in polishing methods and defect inspection, Sumco plays a critical role in the semiconductor supply chain, supporting the development of cutting-edge technologies in Tokyo, Japan.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

624 Patents

#154 in Tokyo

#322 in Japan

#1,583 in the World

Sumco Corporation

Forward Citations = 1,462

480 inventors:

Toshiaki Ono (41 out of 78 patents)

Toshiaki Sudo (34 out of 48 patents)

Akihiko Endo (33 out of 38 patents)

4. Kazunari Kurita (29 out of 31 patents)

5. Keiichi Takanashi (28 out of 34 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumco Corporation. Retrieved from https://idiyas.com/company/sumco

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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