Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889934 | Organic mixed complex | Takeo Kawabata, Akira Taisha | 1989-12-26 |
| 4841096 | Cyclohexane-2,5-dione-1,4-ylene-bis (-3-propionic acid) derivatives and process for preparing the same | — | 1989-06-20 |