Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836530 | Illumination system with a plurality of individual gratings | Wolfgang Singer, Markus Weiss, Karlfried Osterried, Johannes Wangler, Frank Melzer +2 more | 2004-12-28 |
| 6788465 | Littrow grating and use of a littrow grating | Klaus Heidemann | 2004-09-07 |
| 6762881 | Optical arrangement, Littrow grating for use in an optical arrangement and also use of a Littrow grating | Michel Lemaire | 2004-07-13 |
| 6728036 | Diffractive optical element and also optical arrangement comprising a diffractive optical element | Hans-Jurgen Rostalski, Willi Ulrich | 2004-04-27 |