Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841091 | Process for producing 16-substituted prostaglandin es. | Toshio Tanaka, Seizi Kurozumi, Masahiro Koga | 1989-06-20 |
| 4797506 | 6-substituted prostaglandins E.sub.1 and process for producing same | Toshio Tanaka, Seizi Kurozumi | 1989-01-10 |