Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886910 | Cyanoguanidine derivative and process for preparation thereof | Koji Kato, Junichi Imuta, Noriaki Kihara | 1989-12-12 |
| 4886912 | Cyanoguanidine derivative and process for preparation thereof | Keiichi Yokoyama, Noriaki Kihara | 1989-12-12 |