EPO Patents = 1

Forward Citations = 1

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7 inventors (with patents filed for the assignee):

Minoru Honjo (1 out of 15 patents)

Akira Tange (1 out of 141 patents)

Kiyoshi Uwai (1 out of 9 patents)

4. Shigeru Endo (1 out of 32 patents)

5. Katsutoshi Yamashita (1 out of 1 patent)

6. Koei Tsuru (1 out of 1 patent)

7. Keiichi Fujie (1 out of 1 patent)

1 patent: Sort by Forward Citations

#6,102 in Tokyo

#15,759 in Japan

Sumihatsu Co., Ltd.

Forward Citations = 1

7 inventors:

Minoru Honjo (1 out of 15 patents)

Akira Tange (1 out of 141 patents)

Kiyoshi Uwai (1 out of 9 patents)

4. Shigeru Endo (1 out of 32 patents)

5. Katsutoshi Yamashita (1 out of 1 patent)

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