This inventor holds 1 USPTO granted patent. Top assignees: Agency of Industrial Science and Technology, Gosei Kagaku Kkk., Hanano Commercial Co., Ltd.. Active years: 1983.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Seizi Yamada. Retrieved from https://idiyas.com/inventor/seizi-yamada
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 = 5.0
ph-index = 1
Forward Citations = 9(Granted Patents)
Company Filing History:
1 out of 1,430 
Agency of Industrial Science and Technology
1 out of 1 Gosei Kagaku Kkk.
1 out of 8 Hanano Commercial Co., Ltd.
4. 1 out of 1
Taihei Chem. Inc.
where one patent can have more than one assignee
Years Active: 1983
Loading Chart...
1 patent (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: Seizi Yamada. Retrieved from https://idiyas.com/inventor/seizi-yamada
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]