Toho Kogyo Co., Ltd.

Calculating rank

USPTO Granted Patents = 6

% Expired Patents = 16.7

EPO Patents = 4

Forward Citations = 59

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8 inventors (with patents filed for the assignee):

Yutaka Yamaguchi (5 out of 5 patents)

Eiji Suzuki (1 out of 51 patents)

Shinji Ito (1 out of 29 patents)

4. Osamu Yamaguchi (1 out of 1 patent)

5. Yoichiro Inaba (1 out of 4 patents)

6. Kenichi Moriya (1 out of 18 patents)

7. Yasunori Yoshimura (1 out of 1 patent)

8. Yoshihiro Ichimura (1 out of 1 patent)

9. Yasuhiro Imaeda (12 patents)

10. Yukiyasu Taguchi (4 patents)

11. Tatsuhiko Sugayauchi (1 patent)

12. Masayuki Asano (0 patent)

13. Yasunori K K Honda Gijutsu Kenkyusho Yoshimura (0 patent)

14. Yoshihiro K K Honda Gijutsu Kenkyusho Ichimura (0 patent)

15. Yutaka Toho Kogyo Co Ltd Yamaguchi (0 patent)

6 patents: Sort by Forward Citations

1. 8449042 - Adhesive wheel balance weight and process for producing the same (2013-05-28),

2. 7267410 - Balance weight and balance-correcting structure for spoke wheel (2007-09-11),

3. 6874856 - Wheel balance weight and process for manufacturing the same (2005-04-05),

4. 6659567 - Wheel balance weight and process for manufacturing the same (2003-12-09),

5. 6592188 - Wheel balance weight (2003-07-15),

6. 5040160 - Disk and cleaner chip for cleaning optical heads (1991-08-13),

Company Overview

Toho Kogyo Co., Ltd. is a leading manufacturer of high-quality industrial products. With a strong focus on innovation and customer satisfaction, Toho Kogyo is committed to delivering reliable and efficient solutions to meet the diverse needs of its clients. Established in 1931, the company has a long history of excellence in the industry and continues to uphold its reputation for superior quality and craftsmanship.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

6 Patents

#130 in Aichi

#5,990 in Japan

Aichi, Japan

Toho Kogyo Co., Ltd.

Forward Citations = 59

8 inventors:

Yutaka Yamaguchi (5 out of 5 patents)

Eiji Suzuki (1 out of 51 patents)

Shinji Ito (1 out of 29 patents)

4. Osamu Yamaguchi (1 out of 1 patent)

5. Yoichiro Inaba (1 out of 4 patents)

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

4 patents (EPO):

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]