Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889898 | Thermoplastic polyester blends of improved impact resistance | — | 1989-12-26 |
| 4888390 | Rubbery compounds as modifiers for poly(arylene sulfide) | William H. Beever | 1989-12-19 |
| 4797448 | Additive for arylene sulfide polymers of improved impact strength | — | 1989-01-10 |