Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837259 | Polypropylene stabilized against oxidative degradation with mixtures of diarylamine derivatives and sterically hindered phenols | — | 1989-06-06 |
| 4797511 | Polyethylene stabilized by mixture of hindered phenol and amine antioxidants | Janet D. Capolupo | 1989-01-10 |