Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851446 | Immunosuppressing method | Hamao Umezawa, Tomio Takeuchi, Masaaki Ishizuka, Fuminori Abe, Teruya Nakamura | 1989-07-25 |
| 4845215 | Purine derivative | Nobuyoshi Shimada, Takayuki Tomizawa, Shigeru Hasegawa, Kaoru Matsuo, Hiroo Hoshino | 1989-07-04 |
| 4824955 | Selenium oxy chloride-pyridine or bipyridine complexes | Hisao Ekimoto, Masanobu Suzuki, Takao Izawa, Katsutoshi Takahashi, Tokuji Nakatani | 1989-04-25 |
| 4808703 | Novel 3-(4'-aminobutylamino) propylaminobleomycin derivatives | Hamao Umezawa, Yasuhiko Muraoka, Tokuji Nakatani, Takeyo Fukuoka, Katsutoshi Takahashi | 1989-02-28 |