Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5061800 | Camptothecin derivatives | Takashi Yaegashi, Seigo Sawada, Kenichiro Nokata, Kenichi Tezuka, Hiroshi Nagata +2 more | 1991-10-29 |
| 4914205 | Camptothecin derivatives | Seigo Sawada, Kenichiro Nokata, Hisako Nagai, Takashi Yaegashi, Kenichi Tezuka +1 more | 1990-04-03 |
| 4673635 | Triphenyl methane derivatives and method of quantitatively measuring an oxidative substance | Kazuhiko Yamanishi, Akinori Shintani, Toshiro Hanada | 1987-06-16 |
| 4613465 | Triphenyl methane derivatives and method of quantitatively measuring an oxidative substance | Kazuhiko Yamanishi, Akinori Shintani, Toshiro Hanada | 1986-09-23 |