Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868243 | High impact resistant blends of thermoplastic polyesters and modified block copolymers | Richard Gelles, Carl L. Willis | 1989-09-19 |
| 4859737 | Polymeric composition | Richard Gelles | 1989-08-22 |