This inventor holds 3 USPTO granted patents. Top assignees: Nec Corporation, Nippon Telegraph and Telephone Corporation, Hitachi, Ltd.. Active years: 1994-1997.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Haruhiko Matsunaga. Retrieved from https://idiyas.com/inventor/haruhiko-matsunaga
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 = 4.0
ph-index = 3
Forward Citations = 42(Granted Patents)
Location History:
- Kanagawa, JP (1995)
- Yokosuka, JP (1994 - 1997)
Company Filing History:
2 out of 36,718 
Nec Corporation
2 out of 5,300 
Nippon Telegraph and Telephone Corporation
1 out of 42,740 
Hitachi, Ltd.
where one patent can have more than one assignee
Years Active: 1994-1997
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3 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: Haruhiko Matsunaga. Retrieved from https://idiyas.com/inventor/haruhiko-matsunaga
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]