Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7968074 | Method for making low-stress large-volume crystals with reduced stress birefringence and more uniform refractive index and crystals made thereby | Lutz Parthier, Gunther Wehrhan, Christian Kusch | 2011-06-28 |
| 7837969 | Method of making large-volume CaF2 single crystals for optical elements with an optic axis parallel to the (100)-or (110)-crystal axis and CaF2 single crystal made thereby | Lutz Parthier | 2010-11-23 |
| 7679806 | Method for making optical elements for microlithography, the lens systems obtained by the method and their uses | Gunther Wehrhan, Regina Martin, Lutz Parthier, Martin Letz, Jochen Alkemper +2 more | 2010-03-16 |
| 7303627 | Method for making low-stress large-volume not-(111)-oriented crystals with reduced stress birefringence and more uniform refractive index and crystals made thereby | Lutz Parthier, Gunther Wehrhan, Christian Kusch | 2007-12-04 |
| 6364946 | Methods for growing large-volume single crystals from calcium fluoride and their uses | Andreas Weisleder, Gunther Wehrhan, Burkhard Speit, Lutz Parthier | 2002-04-02 |