Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889907 | Polymeric polyhyroxy polyether containing 1,6-diazaspiro-[4.4]nonane-2,7-dione units | — | 1989-12-26 |
| 4888408 | Polymeric polyhydroxy polyether containing 1,6-diazaspiro-[4.4]nonane-2,7-dione units | — | 1989-12-19 |
| 4886863 | Novel alkenylphenol derivatives | — | 1989-12-12 |
| 4885351 | Spirodilactam derivatives | — | 1989-12-05 |
| 4847388 | Polycyclic unsaturated ethers and esters | — | 1989-07-11 |
| 4831161 | N-(amidoalkyl)hydantoins | Steven P. Crain | 1989-05-16 |
| 4800231 | Keto-diesters production | — | 1989-01-24 |