Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883876 | Acylated vincaminic acid derivatives | Shin-ichi Nakatsuka, Masatoshi Hayashi, Sadakazu Yokomori, Katsuo Hatayama, Hiroaki Araki | 1989-11-28 |
| 4803266 | 3-Oxoalkylidene-2-azetidinone derivatives | Yutaka Kawashima, Masakazu Satoh, Yuichi Hatada, Fumiko Hazato, Kaoru Sota | 1989-02-07 |