Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883876 | Acylated vincaminic acid derivatives | Shin-ichi Nakatsuka, Sadakazu Yokomori, Yoshimoto Nakashima, Katsuo Hatayama, Hiroaki Araki | 1989-11-28 |
| 4824856 | Method of protecting gastrointestinal tract | Susumu Okabe, Masaru Satoh, Tomio Yamakawa, Yutaka Nomura | 1989-04-25 |