Forward Citations = 20

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6 inventors (with patents filed for the assignee):

Shigeo Niwa (1 out of 17 patents)

Kazuhiko Sawai (1 out of 7 patents)

Makoto Fukaya (1 out of 4 patents)

4. Torao Ohtsuka (1 out of 4 patents)

5. Hajime Ohta (1 out of 1 patent)

6. Hideo Tagai (1 out of 10 patents)

1 patent: Sort by Forward Citations

1. 5665120 - Biomedical material including tube-like biodegradeable nety works filled (1997-09-09),

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USPTO Data Jan 1 1976 - Oct 20 2026

1 Patents

#831 in

#15,759 in Japan

JP

Tohkai Ceramic Material Co., Ltd.

Forward Citations = 20

6 inventors:

Shigeo Niwa (1 out of 17 patents)

Kazuhiko Sawai (1 out of 7 patents)

Makoto Fukaya (1 out of 4 patents)

4. Torao Ohtsuka (1 out of 4 patents)

5. Hajime Ohta (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tohkai Ceramic Material Co., Ltd.. Retrieved from https://idiyas.com/company/tohkai-ceramic-material-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]