This inventor holds 3 USPTO granted patents. Top assignees: Sumitomo Chemical Company, Limited, Sumitomo Metal Mining Company, Ltd., Taoka Chemical Company, Limited. Active years: 1981-1983.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Koiti Ohasi. Retrieved from https://idiyas.com/inventor/koiti-ohasi
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 = 4.7
ph-index = 3
Forward Citations = 91(Granted Patents)
Location History:
- Kitashinmachi, JP (1981)
- Higashiosaka, JP (1983)
- Osaka, JP (1983)
Company Filing History:
3 out of 6,964 Sumitomo Chemical Company, Limited
1 out of 898 
Sumitomo Metal Mining Company, Ltd.
1 out of 34 Taoka Chemical Company, Limited
where one patent can have more than one assignee
Years Active: 1981-1983
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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: Koiti Ohasi. Retrieved from https://idiyas.com/inventor/koiti-ohasi
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]