Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877803 | Bis-dioxopiperazine derivatives and pharmaceutical compositions containing the same | Jun-Chao Cai | 1989-10-31 |
| 4868303 | Bis-dioxopiperazine derivatives | Jun-Chao Cai | 1989-09-19 |
| 4804668 | Thiazole derivatives and medical compositions thereof | Kimitomo Yoshioka, Hiroaki Yamazaki | 1989-02-14 |
| 4800201 | 1,4-thiazine derivative, and cardiotonic agent comprising it as effective component | Kimitomo Yoshioka, Hiroaki Yamazaki | 1989-01-24 |