% Expired Patents = 25.0

Forward Citations = 19

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11 inventors (with patents filed for the assignee):

Hisao Eguchi (1 out of 16 patents)

Masakazu Nishiyama (1 out of 9 patents)

Yasumi Tanaka (1 out of 4 patents)

4. Takahiko Ishiguro (1 out of 25 patents)

5. Ryuichi Horie (1 out of 9 patents)

6. Hiroaki Tenma (1 out of 1 patent)

7. Toshiya Higashino (1 out of 1 patent)

8. Kimitaka Kuma (1 out of 3 patents)

9. Fumio Okizaki (1 out of 1 patent)

10. Kenji Koyama (1 out of 3 patents)

11. Hiroshi Inoue (1 out of 53 patents)

4 patents: Sort by Forward Citations

1. 7189877 - Arylamine derivatives having fluorene skeleton, synthetic intermediates thereof, processes of producing those, and organic electrolumivescene devices (2007-03-13),

2. 6294615 - Copolymer, cationic high molecular weight flocculating agent comprising the copolymer, and process for producing the copolymer (2001-09-25),

3. 6211354 - Optically active DNA probe having phosphonic diester linkage (2001-04-03),

4. 6207735 - Flame retardant and flame retardant resin composition containing it (2001-03-27),

Company Overview

Tosch Corporation is a leading provider of innovative technology solutions for businesses. With a focus on cutting-edge software development and IT consulting services, we help organizations optimize their operations and achieve their goals. Our team of experienced professionals is dedicated to delivering high-quality solutions that drive business growth and success.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#16 in Yamaguchi

#7,579 in Japan

Yamaguchi, Japan

Tosch Corporation

Forward Citations = 19

11 inventors:

Hisao Eguchi (1 out of 16 patents)

Masakazu Nishiyama (1 out of 9 patents)

Yasumi Tanaka (1 out of 4 patents)

4. Takahiko Ishiguro (1 out of 25 patents)

5. Ryuichi Horie (1 out of 9 patents)

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

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]