Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880774 | Sustained release aromatic | Isao Joukou, Ayako Sekikawa, Hideo Sugi | 1989-11-14 |
| 4818771 | Diphenic acid bis(dicyclohexylamide) for clothrate compound, process for producing the same | Fumio Toda, Ayako Sekikawa, Hideo Sugi | 1989-04-04 |