Forward Citations = 3

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6 inventors (with patents filed for the assignee):

Yoichi Tamaki (1 out of 32 patents)

Katsumi Ogiue (1 out of 36 patents)

Akihisa Uchida (1 out of 20 patents)

4. Masao Kawamura (1 out of 29 patents)

5. Toshihiko Takakura (1 out of 13 patents)

6. Daisuke Okaka (1 out of 1 patent)

1 patent: Sort by Forward Citations

#6,102 in Tokyo

#15,759 in Japan

Hitachi, Ind.

Forward Citations = 3

6 inventors:

Yoichi Tamaki (1 out of 32 patents)

Katsumi Ogiue (1 out of 36 patents)

Akihisa Uchida (1 out of 20 patents)

4. Masao Kawamura (1 out of 29 patents)

5. Toshihiko Takakura (1 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi, Ind.. Retrieved from https://idiyas.com/company/hitachi-ind

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]