Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871730 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Kohji Kawabata | 1989-10-03 |
| 4861769 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Shintaro Nishimura | 1989-08-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871730 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Kohji Kawabata | 1989-10-03 |
| 4861769 | Cephem compounds | Takao Takaya, Zenzaburo Tozuka, Shintaro Nishimura | 1989-08-29 |