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Sumco Corporation

USPTO Granted Patents = 602

EPO Patents = 134

Trademarks = 20

Forward Citations = 1,414

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470 inventors (with patents filed for the assignee):

Toshiaki Ono (39 out of 76 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 (25 out of 31 patents)

6. Hiroshi Kishi (23 out of 40 patents)

7. Ken Kitahara (22 out of 23 patents)

8. Nobuyuki Morimoto (22 out of 23 patents)

9. Wataru Sugimura (21 out of 23 patents)

10. Kazushige Takaishi (20 out of 25 patents)

11. Masataka Hourai (18 out of 29 patents)

12. Eriko Kitahara (17 out of 17 patents)

13. Tomohiro Hashii (17 out of 20 patents)

14. Hideki Nishihata (17 out of 17 patents)

15. Yasuhito Narushima (16 out of 35 patents)

Core Competencies:

Silicon Wafer

Epitaxial Growth

Monocrystalline Silicon

Quartz Glass Crucible

Vapor Deposition

Polishing Apparatus

Semiconductor Evaluation

Czochralski Process

Thermal Conductivity

Carrier Measurement

Defect-Free Manufacturing

Heat Treatment

602 patents: Sort by Forward Citations

1. 12510429 - Differential pressure measuring device and differential pressure measurement method (2025-12-30),

2. 12509793 - Quartz glass crucible, manufacturing method therefor, and method for manufacturing silicon single crystal (2025-12-30),

3. 12500097 - Wafer storage container cleaning apparatus, and wafer storage container cleaning method (2025-12-16),

4. 12500089 - Wafer polishing method and wafer producing method (2025-12-16),

5. 12496678 - Method of polishing silicon wafer and method of producing silicon wafer (2025-12-16),

6. 12492489 - Single crystal manufacturing method, magnetic field generator, and single crystal manufacturing apparatus (2025-12-09),

7. 12485513 - Device for polishing outer periphery of wafer (2025-12-02),

8. 12454770 - Epitaxial silicon wafer and method for producing the same (2025-10-28),

9. 12435443 - Method and apparatus for manufacturing defect-free monocrystalline silicon crystal (2025-10-07),

10. 12414388 - Epitaxial silicon wafer, method for producing same, and method for producing semiconductor device (2025-09-09),

11. 12406863 - Wafer separation apparatus and method, and method for manufacturing silicon wafer (2025-09-02),

12. 12400909 - Method for producing support substrate for bonded wafer, and support substrate for bonded wafer (2025-08-26),

13. 12398992 - Carrier measurement device, carrier measurement method, and carrier management method (2025-08-26),

14. 12392050 - Infrared transmissivity measurement method of quartz glass crucible (2025-08-19),

15. 12371812 - Quartz glass crucible and manufacturing method thereof (2025-07-29),

SUMCO CORPORATION is a leading global manufacturer of silicon wafers and provider of semiconductor manufacturing services. With over 45 years of experience, SUMCO supplies high-quality wafers to the world's top semiconductor manufacturers. The company is committed to continuous innovation, technological advancement, and customer satisfaction. Headquartered in Tokyo, Japan, SUMCO operates multiple production facilities worldwide to meet the growing demands of the semiconductor industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

602 Patents

#143 in Tokyo

#323 in Japan

#1,584 in the World

Sumco Corporation

Forward Citations = 1,414

470 inventors:

Toshiaki Ono (39 out of 76 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 (25 out of 31 patents)

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