This inventor holds 5 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Taga Technology Ltd.. Active years: 1987-1993.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuo Tsumurai. Retrieved from https://idiyas.com/inventor/yasuo-tsumurai
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 = 4.2
ph-index = 4
Forward Citations = 243(Granted Patents)
Location History:
- Higashi, JP (1987)
- Higashi Kanesawa, JP (1987)
- Hitachi, JP (1991 - 1993)
Company Filing History:
5 out of 42,731 
Hitachi, Ltd.
1 out of 1 Hitachi Taga Technology Ltd.
where one patent can have more than one assignee
Years Active: 1987-1993
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5 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: Yasuo Tsumurai. Retrieved from https://idiyas.com/inventor/yasuo-tsumurai
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]