Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889894 | Compatible polymer mixtures | Werner Siol | 1989-12-26 |
| 4877853 | Polymethyl methacrylate molding compounds | Werner Siol, Ernst Heil, Franz Wenzel, Peter J. Arndt | 1989-10-31 |
| 4849479 | Compatible polymer blends | Werner Siol | 1989-07-18 |