Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866115 | Solid mixture of nucleated and nonnucleated polyamides | Walter Betz, Eckhard M. Koch, Christoph Plachetta, Karl Hahn | 1989-09-12 |
| 4861858 | Wholly aromatic thermotropic polyesters | Hans-Jakob Kock, Bernd Hisgen, Michael Portugall, Erhard Seiler | 1989-08-29 |
| 4801676 | Fully aromatic thermotropic polyester imide | Bernd Hisgen, Hans-Jakob Kock, Michael Portugall, Erhard Seiler | 1989-01-31 |
| 4802061 | Microelectronic components and thick-film hybrid circuits | Michael Portugall, Hans-Josef Sterzel, Heinz-Dieter Vondenhagen, Erhard Seiler, Hans-Friedrich Schmidt +1 more | 1989-01-31 |
| 4798855 | Thermoplastic molding materials | Dietrich Lausberg, Peter Ittemann, Gerhard Heinz, Erhard Seiler, Manfred Knoll | 1989-01-17 |
| 4797465 | Wholly aromatic mesomorphic polyether esters and the preparation thereof | Michael Portugall, Hans-Josef Sterzel | 1989-01-10 |