This inventor holds 2 USPTO granted patents. Top assignees: Agency of Industrial Science and Technology, Dowa Mining Co., Ltd., Ministry of International Trade & Industry. Active years: 1991-1997.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Hitoshi Ohya. Retrieved from https://idiyas.com/inventor/hitoshi-ohya
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 = 1
Forward Citations = 13(Granted Patents)
Company Filing History:
1 out of 1,430 
Agency of Industrial Science and Technology
1 out of 217 Dowa Mining Co., Ltd.
1 out of 348 Ministry of International Trade & Industry
4. 1 out of 834,570 patents
Other
where one patent can have more than one assignee
Years Active: 1991-1997
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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: Hitoshi Ohya. Retrieved from https://idiyas.com/inventor/hitoshi-ohya
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]