Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826918 | Polycarbonate moulding composition with improved flow and processiblity | Hans-Jurgen Kress, Dieter Wittmann, Bernd Quiring, Horst Peters | 1989-05-02 |
| 4812515 | Ageing-resistant thermoplastic moulding materials of good impact strength | Hans-Jurgen Kress, Christian Lindner, Wolfgang Grape, Horst Peters, Dieter Wittmann | 1989-03-14 |
| 4806593 | Thermoplastic moulding materials having good resistance to ageing and good low-temperature impact strength | Hans-Jurgen Kress, Christian Lindner, Wolfgang Grape, Horst Peters, Dieter Wittmann | 1989-02-21 |
| 4804708 | Thermoplastic moulding compounds based on special graft polymers | Dieter Wittmann, Christian Lindner, Hans-Jurgen Kress, Horst Peters | 1989-02-14 |