Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773116 | Projection display device | Adrianus Johannes Stephanus Maria De Vaan, Stephen McClain | 2004-08-10 |
| 6727650 | High pressure discharge lamp with reflection layer on the neck portion | Klaus Klinkenberg, Arnd Ritz | 2004-04-27 |
| 6724147 | High-pressure gas discharge lamp with cooling arrangement | Hanns E. Fischer | 2004-04-20 |
| 6631996 | Projection system, and method of operating a projection system | Xaver Riederer | 2003-10-14 |
| 6586892 | Method of and device for operating a gas discharge lamp | Gunther Hans Derra, Hanns E. Fischer, Thomas Krücken, Xaver Riederer | 2003-07-01 |
| 6552499 | High-pressure gas discharge lamp, and method of manufacturing same | Guenther Hans Derra, Hanns E. Fischer, Dieter Leers | 2003-04-22 |
| 6239556 | Long life discharge lamp operating circuit with reduced lamp flicker | Gunther Hans Derra, Hanns E. Fischer, Hans G. Ganser, Thomas Krücken, Rob Snijkers | 2001-05-29 |
| 6232725 | Circuit arrangement for operating a high-pressure discharge lamp | Gunther Hans Derra, Hanns E. Fischer, Hans G. Ganser, Thomas Krücken, Rob Snijkers | 2001-05-15 |