KT

Keizo Takayanagi

EI Eisai: 4 patents #282 of 998Top 30%
Overall (All Time): #1,268,655 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6545024 Sulfoxide compounds and acetone complexes, and a process for producing the same Masahiko Tsujii, Nobuo Niikawa, Shigeharu Nochi 2003-04-08
6180652 Sulfoxide compounds and acetone complexes, and a process for producing the same Masahiko Tsujii, Nobuo Niikawa, Shigeharu Nochi 2001-01-30
4721788 4-cyanopiperidine derivatives Hiroshi Yamauchi, Seiichiro Nomoto, Isao Sugiyama, Yuuki Komatu, Takeo Kanai +3 more 1988-01-26
4433142 Process for the preparation of 7-(2-amino-2-phenylacetamido) cephem derivatives Yasuhide Tanaka, Tasuke Kawabata, Fujio Nakamura, Yukio Morita, Shigeto Negi +2 more 1984-02-21