This inventor holds 5 USPTO granted patents and 4 EPO patents. Top assignees: Tokuyama Corporation, Zeon Corporation. Active years: 2009-2015.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazutaka Watanabe. Retrieved from https://idiyas.com/inventor/kazutaka-watanabe
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Calculating rank
% Patents Active = 80.0
EPO Patents = 4
Average Co-Inventor Count = 2.3
ph-index = 1
Forward Citations = 5(Granted Patents)
Location History:
- Syunan, JP (2009)
- Shunan, JP (2015)
Company Filing History:
5 out of 531 
Tokuyama Corporation
1 out of 1,303 
Zeon Corporation
where one patent can have more than one assignee
Years Active: 2009-2015
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5 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: Kazutaka Watanabe. Retrieved from https://idiyas.com/inventor/kazutaka-watanabe
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]
4 patents (EPO):
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]