Forward Citations = 1

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7 inventors (with patents filed for the assignee):

Isao Tsukagoshi (1 out of 21 patents)

Masahiko Oota (1 out of 7 patents)

Taketo Nomura (1 out of 3 patents)

4. Tomohisa Ohta (1 out of 15 patents)

5. Yasushi Goto (1 out of 6 patents)

6. Yutaka Yamaguchi (1 out of 9 patents)

7. Atsuo Nakajima (1 out of 6 patents)

2 patents: Sort by Forward Citations

#4,372 in Tokyo

#11,139 in Japan

Hitachi Chemical, Ltd.

Forward Citations = 1

7 inventors:

Isao Tsukagoshi (1 out of 21 patents)

Masahiko Oota (1 out of 7 patents)

Taketo Nomura (1 out of 3 patents)

4. Tomohisa Ohta (1 out of 15 patents)

5. Yasushi Goto (1 out of 6 patents)

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

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]