Issued Patents 1989
Showing 1–1 of 1 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 |