Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888417 | Therapeutic and prophylactic agents for peptic ulcer | Yusei Shiraga, Chikara Fukaya, Toshiaki Akira, Kazumasa Yokoyama, Mamoru Tabata +5 more | 1989-12-19 |
| 4849404 | Therapeutic and prophylactic agent for gastrointestinal ulcers | Kazumasa Yokoyama, Tsunekazu Fukushima | 1989-07-18 |