This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: International Business Machines Corporation, Hosiden Corporation, Ricoh Company, Ltd.. Active years: 1997-2005.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuya Matsunaga. Retrieved from https://idiyas.com/inventor/katsuya-matsunaga
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
USPTO Granted Patents = 2 (Patent Applications = 1)
% Patents Active = 50.0
Average Co-Inventor Count = 1.5
ph-index = 2
Forward Citations = 46(Granted Patents)
Company Filing History:
2 out of 166,409 
International Business Machines Corporation
1 out of 793 
Hosiden Corporation
1 out of 28,951 
Ricoh Company, Ltd.
where one patent can have more than one assignee
Years Active: 1997-2005
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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]
1 patent pending:
IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuya Matsunaga. Retrieved from https://idiyas.com/inventor/katsuya-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]