For the Inventor, By the Inventor

Enter assignee name

Toho Tenax Co., Ltd.

Calculating rank

USPTO Granted Patents = 23

% Expired Patents = 26.1

EPO Patents = 18

Forward Citations = 56

Loading Chart...

Loading Chart...

48 inventors (with patents filed for the assignee):

Toru Kaneko (4 out of 19 patents)

Yoshinori Suzuki (4 out of 160 patents)

Hidekazu Yoshikawa (4 out of 4 patents)

4. Taro Oyama (4 out of 4 patents)

5. Takaya Suzuki (3 out of 3 patents)

6. Hiroshi Kimura (3 out of 3 patents)

7. Toyoaki Ishiwata (2 out of 2 patents)

8. Yoshitaka Umemoto (2 out of 4 patents)

9. Kazuma Kurokawa (2 out of 3 patents)

10. Hiroshi Numata (2 out of 2 patents)

11. Shusuke Sanai (1 out of 3 patents)

12. Shuhei Yoshida (1 out of 35 patents)

13. Ronny Wockatz (1 out of 4 patents)

14. Dirk Ortmanns (1 out of 2 patents)

15. Yosuke Nakamura (1 out of 7 patents)

23 patents: Sort by Forward Citations

1. 11047073 - Method for producing a textile unidirectional fabric (2021-06-29),

2. 10988862 - Method for manufacturing carbon fibers and fiber joining method (2021-04-27),

3. 10927226 - Prepreg and method for producing same (2021-02-23),

4. 10875976 - Heat-curable resin composition, prepreg, and method for producing fiber-reinforced composite using each of same (2020-12-29),

5. 10647849 - Epoxy resin composition, prepreg, carbon fiber-reinforced composite material, and manufacturing methods therefor (2020-05-12),

6. 10544274 - Prepreg and fiber-reinforced composite material (2020-01-28),

7. 10316433 - Carbon fiber and method for producing carbon fiber (2019-06-11),

8. 10047478 - Prepreg and method for manufacturing same (2018-08-14),

9. 9745671 - Carbonization method and carbon fiber production method (2017-08-29),

10. 9181640 - Carbon-fiber chopped strand and manufacturing method of the same (2015-11-10),

11. 8916310 - Conductive sheet and production method for same (2014-12-23),

12. 8236273 - Method of producing pre-oxidation fiber and carbon fiber (2012-08-07),

13. 8211537 - Resin composition, and prepreg (2012-07-03),

14. 8161607 - Method for opening fabric, fabric, and composite material (2012-04-24),

15. 8129017 - Carbon fiber strand and process for producing the same (2012-03-06),

Company Overview

Toho Tenax Co., Ltd. is a leading manufacturer specializing in advanced composite materials, particularly carbon fiber and its applications. The company focuses on developing high-performance materials for various industries, including aerospace, automotive, and industrial sectors. With a strong emphasis on research and innovation, Toho Tenax is committed to enhancing material properties and performance, contributing to the advancement of lightweight and durable solutions in engineering and manufacturing. Headquartered in Tokyo, Japan, it serves a global market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

23 Patents

#1,246 in Tokyo

#2,706 in Japan

#27,717 in the World

Toho Tenax Co., Ltd.

Forward Citations = 56

48 inventors:

Toru Kaneko (4 out of 19 patents)

Yoshinori Suzuki (4 out of 160 patents)

Hidekazu Yoshikawa (4 out of 4 patents)

4. Taro Oyama (4 out of 4 patents)

5. Takaya Suzuki (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toho Tenax Co., Ltd.. Retrieved from https://idiyas.com/company/toho-tenax-company

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]

Loading…