Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8502458 | Operating device and method for the combined operation of gas discharge lamps and semiconductor light sources | Andreas Huber | 2013-08-06 |
| 8358072 | Circuit arrangement, and method for the operation of a fluorescent lamp | — | 2013-01-22 |
| 8067899 | Circuit arrangement and method for operating at least one first and a second lamp | Werner Longhino, Andreas Mitze, Markus Ziegler | 2011-11-29 |
| 7675242 | Electronic ballast | Werner Longhino | 2010-03-09 |
| 7355356 | Circuit arrangement and method for detecting a crest factor of a lamp current or a lamp operating voltage of an electric lamp | — | 2008-04-08 |
| 7291982 | Method and apparatus for the closed loop and open loop control of filament heating for lamps | Werner Longhino, Andreas Mitze | 2007-11-06 |