Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861858 | Wholly aromatic thermotropic polyesters | Bernd Hisgen, Michael Portugall, Erhard Seiler, Gerd Blinne | 1989-08-29 |
| 4831103 | Wholly aromatic liquid-crystalline polycondensates | — | 1989-05-16 |
| 4816555 | Wholly aromatic mesomorphic polyester amides and preparation thereof | Bernd Hisgen | 1989-03-28 |
| 4801676 | Fully aromatic thermotropic polyester imide | Bernd Hisgen, Michael Portugall, Erhard Seiler, Gerd Blinne | 1989-01-31 |
| 4801734 | Amphiphilic 4-alkoxypolyethoxybenzoates, their preparation and their use | Ekhard Winkler, Richard Baur, Heino Finkelmann, Markus Schafheutle | 1989-01-31 |