This inventor holds 2 USPTO granted patents. Top assignees: Hitachi Software Engineering Company, Ltd., Hitachi, Ltd.. Active years: 1993-1995.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironari Sakai. Retrieved from https://idiyas.com/inventor/hironari-sakai
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
% Patents Active = 100.0
Average Co-Inventor Count = 3.4
ph-index = 2
Forward Citations = 18(Granted Patents)
Location History:
- Yamato, JP (1993)
- Yokohama, JP (1995)
Company Filing History:
2 out of 228 
Hitachi Software Engineering Company, Ltd.
2 out of 42,740 
Hitachi, Ltd.
where one patent can have more than one assignee
Years Active: 1993-1995
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2 patents (USPTO):Explore Patents
Profile summary based on public USPTO records.
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]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironari Sakai. Retrieved from https://idiyas.com/inventor/hironari-sakai
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]
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]