Issued Patents 1989
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886620 | Smectic liquid-crystalline phases | Reinhard Hopf, Andreas Wachtler, Reinhard Hittich, Rudolf Eidenschink, Thomas Geelhaar +2 more | 1989-12-12 |
| 4886344 | Electro-optical display element | Gunter Baur, Waltraud Fehrenbach | 1989-12-12 |
| 4882082 | Nitrogen-containing hetercyclic compounds | Rudolf Eidenschink, Joachim Krause, Reinhard Hittich, Eike Poetsch, Georg Weber +1 more | 1989-11-21 |
| 4877547 | Liquid crystal display element | Georg Weber, Joachim Krause | 1989-10-31 |
| 4871469 | Nematic liquid-crystalline phases | Volker Reiffenrath, Joachim Krause, Thomas Geelhaar, Rudolf Eidenschink, Hans-Adolf Kurmeier +2 more | 1989-10-03 |
| 4867904 | Bicyclooctane derivatives | Joachim Krause, Volker Reiffenrath, Georg Weber | 1989-09-19 |
| 4853149 | Heterocyclic liquid crystal compounds | Joachim Krause, Andreas Wachtler, Georg Weber | 1989-08-01 |
| 4846998 | Cyclohexane derivatives | Ludwig Pohl, Reinhard Hittich, Rudolf Eidenschink, Hans-Adolf Kurmeier, Andreas Wachtler | 1989-07-11 |
| 4834904 | Nitrogen-containing heterocycles | Joachim Krause, Rudolf Eidenschink, Klaus Bofinger, Thomas Geelhaar | 1989-05-30 |
| 4820839 | Nitrogen-containing heterocyclic esters | Joachim Krause, Andreas Wachtler, Volker Reiffenrath, Reinhard Hittich | 1989-04-11 |
| 4818428 | Liquid crystal phase | Georg Weber, Joachim Krause | 1989-04-04 |
| 4812258 | Fluorine-containing pyrimidine derivatives | Joachim Krause, Michael C. Romer, Ludwig Pohl, Georg Weber | 1989-03-14 |
| 4799774 | Electrooptical display element using a supertwist liquid crystal having specified elastic constants | Guter Baur, Waltraud Fehrenbach | 1989-01-24 |