% Expired Patents = 50.0

EPO Patents = 1

Forward Citations = 0

Loading Chart...

7 inventors (with patents filed for the assignee):

Masahiro Okamoto (1 out of 1 patent)

Masatoshi Nakagawa (1 out of 1 patent)

Kazunori Shinohara (1 out of 1 patent)

4. Koji Sone (1 out of 4 patents)

5. Toshio Nomura (1 out of 1 patent)

6. Reiji Ogawa (1 out of 1 patent)

7. Yuya Hino (1 out of 1 patent)

8. Yuya Hino (0 patent)

9. Toshio Nomura (0 patent)

2 patents: Sort by Forward Citations

#19 in Ehime

#11,124 in Japan

Maruyasu Co., Ltd.

Forward Citations = 0

7 inventors:

Masahiro Okamoto (1 out of 1 patent)

Masatoshi Nakagawa (1 out of 1 patent)

Kazunori Shinohara (1 out of 1 patent)

4. Koji Sone (1 out of 4 patents)

5. Toshio Nomura (1 out of 1 patent)

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

1 patent (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]