Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7495386 | Electroluminescent device with improved light output | Hans-Helmut Bechtel, Wolfgang Busselt, Joachim Opitz, Markus Klein, Dietrich Bertram | 2009-02-24 |
| 7262551 | Electroluminescent device with improved light output | Hans-Helmut Bechtel, Wolfgang Busselt, Joachim Opitz, Markus Klein, Dietrich Bertram | 2007-08-28 |
| 6756727 | Color picture screen with color filter | Hans-Helmut Bechtel, Joachim Opitz | 2004-06-29 |
| 6753649 | Plasma picture screen with UV light reflecting front plate coating | Helmut Bechtel, Wolfgang Busselt, Claus Feldmann, Joachim Opitz, Detlef Uwe Wiechert | 2004-06-22 |
| 6559598 | Plasma picture screen with UV light emitting layer | Thomas Justel, Hans-Helmut Bechtel, Walter Mayr, Hans Nikol | 2003-05-06 |