Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4937286 | Thermoplastic moulding compositions | Frank Wingler, Ulrich Jansen, Joachim Doring, Alfred Pischtschan | 1990-06-26 |
| 4902746 | Use of mixtures of polycarbonates and styrene polymers as substrates for optical storage media | Volker Serini, Klaus Berg, Ulrich Grigo, Leo Morbitzer, Karl-Erwin Piejko | 1990-02-20 |
| 4795780 | Process for the preparation of binary .alpha.-methylstyrene/acrylonitrile resins by multi-stage bulk polymerization | Frank Wingler, Gerd Wassmuth, Alfred Pischtschan, Joachim Doring | 1989-01-03 |