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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#78 in Ibaraki
#11,143 in Japan
Hitachi Naka Seiki, Ltd.
Forward Citations = 17
4 inventors:
Hitachi Naka Seiki, Ltd.
Calculating rank
Forward Citations = 17
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4 inventors (with patents filed for the assignee):
Junichiro Tomizawa (1 out of 1 patent)
Shigeru Kawamata (1 out of 3 patents)
Tomoyasu Hirashima (1 out of 1 patent)
4. Susumu Ozasa (1 out of 15 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Naka Seiki, Ltd.. Retrieved from https://idiyas.com/company/hitachi-naka-seiki
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]