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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#54 in Niigata
#11,147 in Japan
Poratechno Co., Ltd.
Forward Citations = 3
4 inventors:
Poratechno Co., Ltd.
Calculating rank
% Expired Patents = 100.0
Forward Citations = 3
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4 inventors (with patents filed for the assignee):
Yoshinori Ishii (2 out of 4 patents)
Takao Uesugi (2 out of 3 patents)
Koichi Watanabe (2 out of 4 patents)
4. Takeshi Yamamoto (1 out of 3 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Poratechno Co., Ltd.. Retrieved from https://idiyas.com/company/poratechno-company
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]