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USPTO Data Jan 1 1976 - Oct 13 2026
2 Patents
#1 in Maibara
#11,133 in Japan
Estir Co., Ltd.
Forward Citations = 0
4 inventors:
Estir Co., Ltd.
% Expired Patents = 100.0
EPO Patents = 2
Forward Citations = 0
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4 inventors (with patents filed for the assignee):
Teruyuki Akazawa (2 out of 17 patents)
Tsutomu Nakatsuka (2 out of 2 patents)
Taeko Tahara (2 out of 2 patents)
4. Osamu Sakamoto (2 out of 2 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Estir Co., Ltd.. Retrieved from https://idiyas.com/company/estir-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]
2 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]