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USPTO Data Jan 1 1976 - Oct 13 2026
1 Patents
#6,094 in Tokyo
#15,745 in Japan
Hitachi Research Dev. Corp.
Forward Citations = 14
7 inventors:
Hitachi Research Dev. Corp.
Forward Citations = 14
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7 inventors (with patents filed for the assignee):
Yasunobu Ogata (1 out of 17 patents)
Kazuo Shiiki (1 out of 38 patents)
Shigekazu Otomo (1 out of 35 patents)
4. Shinji Takayama (1 out of 19 patents)
5. Mitsuhiro Kudo (1 out of 21 patents)
6. Yasuo Tsukuda (1 out of 5 patents)
7. Yoshizo Sawada (1 out of 5 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Research Dev. Corp.. Retrieved from https://idiyas.com/company/hitachi-research-dev
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]
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]
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]