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Toyota Tsusho Corporation

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USPTO Granted Patents = 60

% Expired Patents = 18.3

EPO Patents = 11

Trademarks = 5

Forward Citations = 143

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102 inventors (with patents filed for the assignee):

Tadaaki Kaneko (34 out of 51 patents)

Daichi Dojima (14 out of 15 patents)

Koji Ashida (6 out of 11 patents)

4. Yoshitaka Nishio (5 out of 29 patents)

5. Yasuharu Kase (5 out of 5 patents)

6. Takayuki Arai (5 out of 5 patents)

7. Kiyoshi Kawarazaki (5 out of 5 patents)

8. Moeko Matsubara (5 out of 5 patents)

9. Yoshihisa Fujita (4 out of 5 patents)

10. Masakatsu Kumagai (4 out of 5 patents)

11. Kiyoshi Kojima (4 out of 4 patents)

12. Yasunori Kutsuma (3 out of 7 patents)

13. Ryo Hashimoto (3 out of 3 patents)

14. Toshio Iwasawa (3 out of 14 patents)

15. Tomoya Ihara (3 out of 3 patents)

Core Competencies:

Silicon Carbide

Epitaxial Growth

Substrate Manufacturing

Dislocation Suppression

Aluminum Nitride

Semiconductor Device

Heat Treatment

Material Transportation

Thermoelectric Conversion

Knitting Structure

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60 patents: Sort by Forward Citations

1. 12777883 - Method for producing aluminum nitride substrate, aluminum nitride substrate, and method for suppressing occurrence of cracks in aluminum nitride layer (2026-10-27),

2. 12725240 - Heat treatment environment evaluation method and silicon carbide substrate (2026-09-01),

3. 12692619 - Method for producing aluminum nitride substrate, aluminum nitride substrate, and method for suppressing introduction of dislocation into aluminum nitride growth layer (2026-07-28),

4. 12686945 - SiC substrate, SiC substrate production method, SiC semiconductor device, and SiC semiconductor device production method (2026-07-21),

5. 12668855 - Metal removal method and metal recovery method (2026-06-30),

6. 12581873 - Method of manufacturing SiC semiconductor device and SiC semiconductor device (2026-03-17),

7. 12575380 - Evaluation method for silicon carbide substrates (2026-03-10),

8. 12571626 - Method for measuring etching amount, and measurement system therefor (2026-03-10),

9. 12545007 - Nonwoven fabric used for foamed article reinforcing material, foamed article reinforcing material, and method for producing nonwoven fabric used for foamed article reinforcing material (2026-02-10),

10. 12540416 - Method for manufacturing a semiconductor substrate and method for suppressing occurrence of cracks in a growth layer (2026-02-03),

11. 12534825 - SiC epitaxial substrate manufacturing method and manufacturing device therefor (2026-01-27),

12. 12509795 - Method for manufacturing aluminum nitride substrate, aluminum nitride substrate, and method for forming aluminum nitride layer (2025-12-30),

13. 12460315 - Method for manufacturing semiconductor substrates and method for suppressing introduction of displacement to growth layer (2025-11-04),

14. 12451348 - Method and device for manufacturing sic substrate, and method for reducing macro-step bunching of sic substrate (2025-10-21),

15. 12421624 - SiC substrate, SiC epitaxial substrate, SiC ingot and production methods thereof (2025-09-23),

Company Overview

Toyota Tsusho Corporation, headquartered in Nagoya, Japan, specializes in advanced silicon carbide technology, focusing on epitaxial growth and substrate manufacturing. The company is dedicated to enhancing semiconductor device performance through innovative techniques such as dislocation suppression and heat treatment. With a commitment to material transportation and development, Toyota Tsusho plays a pivotal role in the semiconductor industry, contributing to the evolution of high-efficiency electronic components and systems.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

60 Patents

#25 in Nagoya

#1,533 in Japan

#12,096 in the World

Toyota Tsusho Corporation

Forward Citations = 143

102 inventors:

Tadaaki Kaneko (34 out of 51 patents)

Daichi Dojima (14 out of 15 patents)

Koji Ashida (6 out of 11 patents)

4. Yoshitaka Nishio (5 out of 29 patents)

5. Yasuharu Kase (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toyota Tsusho Corporation. Retrieved from https://idiyas.com/company/toyota-tsusho

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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