Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888444 | Substituted hydroxylamine ester stabilizers | Ramanathan Ravichandran | 1989-12-19 |
| 4835202 | (Hydroxyphenyl) phosphine stabilized compositions | John D. Spivack, Edward T. Hessell | 1989-05-30 |
| 4831178 | Aliphatic esters of 1,3,2-oxazaphospholidines | Paul A. Odorisio, James L. Hyun | 1989-05-16 |
| 4812501 | 1,3,2-oxazaphospholidine stabilizers | Paul A. Odorisio, James L. Hyun | 1989-03-14 |
| 4808644 | Substituted (4-hydroxyphenylthioalkyl) derivatives | John D. Spivack, Ramanathan Ravichandran | 1989-02-28 |