Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795780 | Process for the preparation of binary .alpha.-methylstyrene/acrylonitrile resins by multi-stage bulk polymerization | Frank Wingler, Klaus Summermann, Alfred Pischtschan, Joachim Doring | 1989-01-03 |
| 4181788 | Process for the production of thermoplastic molding materials based on vinyl polymers | Frank Wingler, Lothar Liebig, Martin Ullrich, Manfred Hederich | 1980-01-01 |