Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870207 | Synthesis of arphamenine A | Hamao Umezawa, Takaaki Aoyagi, Kuniaki Tatsuta, Takeshi Nakamura | 1989-09-26 |
| 4839350 | Cephalosporin compounds and the production thereof | Kunio Atsumi, Kenji Sakagami, Yuichi Yamamoto, Takashi Yoshida, Ken Nishihata +1 more | 1989-06-13 |