Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889911 | Process for the production of fully aromatic, thermotropic polyesters and polyester carbonates | Harald Pielartzik, Wolfgang Ebert, Rolf-Volker Meyer, Hans-Joachim Traenckner | 1989-12-26 |
| 4886869 | Thermotropic aromatic polyester carbonates, a process for their preparation and their use | Harald Pielartzik, Rolf Dhein, Rolf-Volker Meyer, Hans-Joachim Traenckner | 1989-12-12 |
| 4824933 | Process for the preparation of copolyarylene sulphides with reduced crystallization temperature | Ernst-Ulrich Dorf | 1989-04-25 |