Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859593 | New physiologically active substance, arphamenine and production thereof | Hamao Umezawa, Takaaki Aoyagi, Tomio Takeuchi, Masa Hamada | 1989-08-22 |
| 4851446 | Immunosuppressing method | Hamao Umezawa, Tomio Takeuchi, Fuminori Abe, Akio Fujii, Teruya Nakamura | 1989-07-25 |