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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#4,375 in Tokyo
#11,147 in Japan
Eisai Research Institute
Forward Citations = 1
12 inventors:
Eisai Research Institute
Calculating rank
% Expired Patents = 50.0
Forward Citations = 1
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12 inventors (with patents filed for the assignee):
Norimasa Miyamoto (1 out of 11 patents)
Isao Tanaka (1 out of 8 patents)
Takashi Yoshinaga (1 out of 6 patents)
4. Mitsuhiro Ino (1 out of 9 patents)
5. Shigeo Ohta (1 out of 1 patent)
6. Kazutoshi Nakano (1 out of 1 patent)
7. Eiki Takahashi (1 out of 1 patent)
8. Toru Oki (1 out of 1 patent)
9. Shinji Hatakeyama (1 out of 1 patent)
10. Tetsuhiro Niidome (1 out of 1 patent)
11. Yukio Nishizawa (1 out of 1 patent)
12. Kohei Sawada (1 out of 12 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Eisai Research Institute. Retrieved from https://idiyas.com/company/eisai-research-institute
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]