Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222994 | Illumination system | Johannes Marra | 2007-05-29 |
| 7131885 | Method of providing a UV-reflecting layer | Volker Dirk Hildenbrand, Cornelis Reinder Ronda, Claudia Mutter | 2006-11-07 |
| 7128443 | Light-collimating system | Johannes Marra | 2006-10-31 |
| 7126653 | Liquid crystal picture screen with collimator having microprisms | Hans-Helmut Bechtel, Dietrich Bertram | 2006-10-24 |
| 6975287 | Plasma color display screen with pixel matrix array | Hans-Helmut Bechtel, Wolfgang Busselt | 2005-12-13 |
| 6906463 | UV-reflecting layer, lamp with such a layer, and method of providing such a layer on a lamp glass | Volker Dirk Hildenbrand, Cornelis Reinder Ronda, Claudia Mutter | 2005-06-14 |
| 6750610 | Plasma display with enhanced contrast and protective layer | Hans-Helmut Bechtel, Wolfgang Busselt, Joachim Opitz | 2004-06-15 |
| 6700324 | Plasma picture screen with improved white color point | Hans-Helmut Bechtel, Wolfgang Busselt, Joachim Opitz, Thomas Juestel, Volker Van Elsbergen | 2004-03-02 |
| 6552503 | Cathode ray tube with arrangement for electron ray control | Hans-Helmut Bechtel, Wolfgang Busselt | 2003-04-22 |