Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7175779 | Thermotropic main-chain liquid crystalline polymers and method of increasing the melt processibility of polyester-based liquid crystalline polymers | Andreas Gerken | 2007-02-13 |
| 6297350 | Process for the preparation of copolyesters | Ingrid Kreiser-Saunders, Dirk-Olaf Damrau | 2001-10-02 |
| 6291629 | Chirally nematic polyesters | Thorsten Krawinkel, Andreas Gerken, Peter Schuhmacher | 2001-09-18 |
| 6156866 | Chiral nematic polycarbonates | Peter Schuhmacher, Shih-Jieh Sun | 2000-12-05 |
| 5843541 | Liquid crystalline copoly(ester-imide)s and a process for the preparation thereof | Heli Alanko, Ari Salmela | 1998-12-01 |
| 5766679 | Chiral nematic polyesters | Karl Siemensmeyer, Frank Meyer, Karl-Heinz Etzbach, Nicolas PROBST | 1998-06-16 |
| 5134219 | Stiff-chain polyheterocycles having improved solubility, a process for their production and their use | Jurgen Engelhardt, Ralf Pakull, Volker Eckhardt, Ulrich Leyrer | 1992-07-28 |
| 5084550 | Copolycarbonate from mixture of polyarylene diol | Ralf Pakull, Dieter Freitag, Volker Eckhardt, Karsten-Josef Idel, Dierik Lubbers | 1992-01-28 |
| 5004836 | Aromatic polyethers containing keto groups in side chains | Ulrich Delius, Rolf Wehrmann | 1991-04-02 |
| 4931534 | Thermotropic aromatic polyesters, a process for their production and their use for the production of moldings, filaments, fibers and films | Ralf Pakull, Volker Eckhardt, Joachim Genz, Karsten-Josef Idel, Volker Doring | 1990-06-05 |
| 4861857 | Thermotropic polyesterimide from N-carboxyalkylene trimellitimide having excellent processibility, a process for their production and their use for the production of moldings, filaments, fibers and films | Ralf Pakull, Volker Eckhardt, Hans-Rudolf Dicke | 1989-08-29 |
| 4631333 | Process for the preparation of polyimide esters of trimellitic acid | Ralf Pakull, Hans-Rudolf Dicke | 1986-12-23 |
| 4474932 | Process for the production of aromatic ethers and aromatic polyethers | Gerhard Bier | 1984-10-02 |