Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873116 | Method of preparing mixtures of incompatible hydrocarbon polymers | — | 1989-10-10 |
| 4857593 | Process for processing thermoplastic polymers | Pak S. Leung, Errol D. Goddard | 1989-08-15 |
| 4795768 | Impact promoters for mineral-filled thermoplastics | Arnold C. Ashcraft | 1989-01-03 |