Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374492 | Purple membrane preparations having increased holographic diffraction efficiency | Norbert Hampp, Andreas Popp, Christoph Brauchle, Dieter Oesterhelt | 1994-12-20 |
| 5359439 | Optical elements based on liquid-crystalline substances with no birefringence in a non-perpendicular direction and a process for their preparation | Horst Leigeber, Franz-Heinrich Kreuzer | 1994-10-25 |
| 5301045 | Helical liquid crystalline element which produces linear polarized light | Franz-Heinrich Kreuzer, Horst Leigeber, Christoph Brauchle, Andreas Petri | 1994-04-05 |