Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853407 | Aminoethylcysteine derivatives | Norio Shibamoto, Takeo Yoshioka, Tomoyuki Ishikura | 1989-08-01 |
| 4812563 | 6-(disubstituted amino)carbapenam compounds | Takeo Yoshioka, Noritaka Chida, Azuma Watanabe, Tomoyuki Ishikura | 1989-03-14 |