Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888370 | Flame-resistant polyamides | Thomas Joswig, Karsten-Josef Idel, Heinz-Josef Fullmann, Friedemann Muller | 1989-12-19 |
| 4876033 | Moulded bodies containing carbon | Heinz-Jurgen Dziurla, Werner Waldenrath, Claus Burkhardt, Bernhard Schulte | 1989-10-24 |
| 4859263 | Process for the manufacture of printed circuits | Heinz-Jurgen Dziurla, Hans-Leo Weber, Werner Waldenrath | 1989-08-22 |
| 4812589 | Polyhydroxyl compounds containing a sulfonic acid ester group | Klaus Prater, Walter Uerdingen, Heinrich Heine | 1989-03-14 |
| 4806619 | Thermotropic aromatic polyesters having a high deflection temperature under load and excellent mechanical properties, a process for their preparation and their use for the production of moldings, filaments, fibres and films | Volker Eckhardt, Hans-Rudolf Dicke, Erich Hammerschmidt | 1989-02-21 |
| 4801677 | Thermotropic aromatic polyester with high thermal stability | Volker Eckhardt, Hans-Rudolf Dicke, Ludwig Bottenbruch, Ulrich Biskup | 1989-01-31 |
| 4797467 | Thermoplastic polycarbonate branched with tetra-hydroxyaryl-bis-quinoxaline | Volker Eckhardt, Hans-Rudolf Dicke | 1989-01-10 |