Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880809 | 1,4-disubstituted piperazines (or homopiperazines) as platelet-activating factor antagonists | Hirosada Sugihara, Katsumi Itoh | 1989-11-14 |
| 4871842 | Piperidine derivatives | Hirosada Sugihara, Katsumi Ito | 1989-10-03 |
| 4851413 | Certain benzoquinones, naphthoquinones, corresponding hydroquinones which exhibit thromboxane A.sub.2 synthetase inhibition or receptor antagonism and the like | Shinji Terao | 1989-07-25 |
| 4822818 | Bicycle compounds, their production and use | Yoshikazu Oka, Akio Miyake | 1989-04-18 |
| 4816466 | Piperidine derivatives | Hirosada Sugihara, Katsumi Ito | 1989-03-28 |