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USPTO Data Jan 1 1976 - Oct 13 2026
3 Patents
#3,547 in Tokyo
#8,929 in Japan
Altan Co., Ltd.
Forward Citations = 0
5 inventors:
Altan Co., Ltd.
% Expired Patents = 100.0
CIPO Patents = 1
EPO Patents = 1
Forward Citations = 0
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5 inventors (with patents filed for the assignee):
Toru Tsuji (3 out of 4 patents)
Tadashi Shimamoto (3 out of 3 patents)
Yoshiaki Nakai (3 out of 3 patents)
4. Takemasa Sakaguchi (1 out of 3 patents)
5. Yasushi Okinaka (1 out of 1 patent)
6. Yasushi Okinaka (0 patent)
3 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Altan Co., Ltd.. Retrieved from https://idiyas.com/company/altan-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]
1 patent (CIPO):
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]
1 patent (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]