This inventor holds 2 USPTO granted patents. Top assignees: Mitsui Petrochemical Industries, Ltd., Nissan Motor Company Limited. Active years: 1979-1991.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Ikuo Hirai. Retrieved from https://idiyas.com/inventor/ikuo-hirai
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 = 2.9
ph-index = 2
Forward Citations = 26(Granted Patents)
Location History:
- Iwakuni, JP (1979)
- Ichihara, JP (1991)
Company Filing History:
2 out of 1,008 Mitsui Petrochemical Industries, Ltd.
1 out of 13,420 
Nissan Motor Company Limited
where one patent can have more than one assignee
Years Active: 1979-1991
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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: Ikuo Hirai. Retrieved from https://idiyas.com/inventor/ikuo-hirai
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]