Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10219334 | Circuit arrangement for operating semiconductor light sources | Olaf Busse, Siegfried Mayer, Horst Werni, Christof Schwarzfischer | 2019-02-26 |
| 8134297 | Ballast for a discharge lamp with adaptive preheating | Olaf Busse, Markus Heckmann, Reinhard Lecheler, Siegfried Mayer, Thomas Pollischansky +7 more | 2012-03-13 |
| 7786683 | Circuit arrangement and method for operating at least one electric lamp and at least one LED | Olaf Busse, Markus Heckmann, Reinhard Lecheler, Siegfried Mayer, Thomas Pollischansky +7 more | 2010-08-31 |
| 7352079 | Electronic ballast for a lamp | Markus Heckmann, Thomas Siegmund | 2008-04-01 |
| 7327094 | Circuit arrangement and method for operating at least one electric lamp | Olaf Busse, Markus Heckmann, Reinhard Lecheler, Siegfried Mayer, Thomas Pollischansky +7 more | 2008-02-05 |
| 7309963 | Smoothing circuit for improving EMC | Olaf Busse, Markus Heckmann, Reinhard Lecheler, Siegfried Mayer, Thomas Pollischansky +7 more | 2007-12-18 |
| 6788001 | Lighting system with caring preheating of gas discharge lamps | — | 2004-09-07 |