% Expired Patents = 100.0

EPO Patents = 2

Forward Citations = 0

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6 inventors (with patents filed for the assignee):

Satoshi Fujiki (1 out of 4 patents)

Kazuyuki Yamashita (1 out of 3 patents)

Takashi Onaga (1 out of 3 patents)

4. Hideki Morimoto (1 out of 1 patent)

5. Tutomu Obata (1 out of 1 patent)

6. Masayasu Suzuki (1 out of 2 patents)

7. Hideki Toyama Industrial Tech Center Morimoto (0 patent)

8. Tutomu Toyama Industrial Tech Center Obata (0 patent)

9. Takashi Toyama Industrial Tech Center Onaga (0 patent)

10. Masayasu Toyama University Suzuki (0 patent)

11. Kazuyuki Richell Co Ltd Yamashita (0 patent)

12. Satoshi Toyama Industrial Tech Center Fujiki (0 patent)

1 patent: Sort by Forward Citations

#831 in

#15,745 in Japan

Richell Co., Ltd.

Forward Citations = 0

6 inventors:

Satoshi Fujiki (1 out of 4 patents)

Kazuyuki Yamashita (1 out of 3 patents)

Takashi Onaga (1 out of 3 patents)

4. Hideki Morimoto (1 out of 1 patent)

5. Tutomu Obata (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Richell Co., Ltd.. Retrieved from https://idiyas.com/company/richell-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]

2 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]