This inventor holds 9 USPTO granted patents. Top assignees: Kawasaki Jukogyo Kabushiki Kaisha, Ishii Syoji, Ltd., Electric Power Development Co., Ltd.. Active years: 1978-1988.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Hagiwara. Retrieved from https://idiyas.com/inventor/tatsuo-hagiwara
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 = 3.6
ph-index = 7
Forward Citations = 94(Granted Patents)
Location History:
- Funabashi, JA (1978)
- Funabashi, JP (1981 - 1988)
Company Filing History:
9 out of 3,459 
Kawasaki Jukogyo Kabushiki Kaisha
4 out of 5 Ishii Syoji, Ltd.
1 out of 44 
Electric Power Development Co., Ltd.
4. 1 out of 1
Ishii Syogi, Ltd.
where one patent can have more than one assignee
Years Active: 1978-1988
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9 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: Tatsuo Hagiwara. Retrieved from https://idiyas.com/inventor/tatsuo-hagiwara
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]