Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886903 | Process for production of prostaglandins D2 | Ryoji Noyori, Masaaki Suzuki, Seizi Kurozumi | 1989-12-12 |
| 4853549 | Electron beam drawing method | Kazumitsu Nakamura | 1989-08-01 |