Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716221 | 4'-demethyl-4-epipodophyllotoxin derivative | Hamao Umezawa, Tomio Takeuchi, Shinichi Kondo, Wataru Tanaka, Tomohisa Takita +1 more | 1987-12-29 |
| 4547567 | Derivatives of 4'-demethyl-4-epipodophyllotoxin | Hamao Umezawa, Tomio Takeuchi, Shinichi Kondo, Wataru Tanaka, Tomohisa Takita +1 more | 1985-10-15 |