Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849424 | Pyrimidine derivatives | Masazumi Ikeda | 1989-07-18 |
| 4824856 | Method of protecting gastrointestinal tract | Masaru Satoh, Tomio Yamakawa, Yutaka Nomura, Masatoshi Hayashi | 1989-04-25 |