Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10251227 | Clocked electronic energy converter | Siegfried Mayer, Christof Schwarzfischer, Maximilian Gerber | 2019-04-02 |
| 10219334 | Circuit arrangement for operating semiconductor light sources | Alfons Lechner, Siegfried Mayer, Horst Werni, Christof Schwarzfischer | 2019-02-26 |
| 9967931 | Clocked electronic energy converter | Siegfried Mayer, Christof Schwarzfischer | 2018-05-08 |
| 8659231 | Electronic ballast and method for operation of at least one discharge lamp | Siegfried Mayer | 2014-02-25 |
| 8558459 | Electronic ballast and method for operating an electrical lamp | Bernhard Schemmel | 2013-10-15 |
| 8441200 | Electronic ballast and method for operating at least one first and second discharge lamp | Siegfried Mayer, Arwed Storm | 2013-05-14 |
| 8415899 | Method and device for detecting a statistical characteristic of a lighting device | Oskar Schallmoser | 2013-04-09 |
| 8410721 | Electronic ballast and method for operating at least one discharge lamp | Siegfried Mayer | 2013-04-02 |
| 8134297 | Ballast for a discharge lamp with adaptive preheating | Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky +7 more | 2012-03-13 |
| 8093836 | Circuit arrangement and method for striking a discharge lamp | Siegfried Mayer, Arwed Storm | 2012-01-10 |
| 7786683 | Circuit arrangement and method for operating at least one electric lamp and at least one LED | Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky +7 more | 2010-08-31 |
| 7432662 | Circuit arrangement and method for operating at least one lamp | — | 2008-10-07 |
| 7327094 | Circuit arrangement and method for operating at least one electric lamp | Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky +7 more | 2008-02-05 |
| 7309963 | Smoothing circuit for improving EMC | Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky +7 more | 2007-12-18 |
| 7154233 | Converter circuit with coupled inductances having asymmetrical air gap arrangement | Markus Heckmann, Siegfried Mayer | 2006-12-26 |
| 6828737 | Discharge lamp operating circuit with a current regulation circuit and a circuit for detection of the proximity to capacitive operation | Markus Heckmann | 2004-12-07 |
| 6768271 | Ballast and method for operating a lamp | Markus Heckmann, Wolfram Sowa | 2004-07-27 |
| 6759813 | Operating circuit for a discharge lamp with frequency-variable ignition | Klaus Orth | 2004-07-06 |
| 6753659 | Operating device for discharge lamps having a preheating device | Bernhard Schemmel, Michael Weirich | 2004-06-22 |
| 6707262 | Discharge lamp operating circuit having a circuit for detecting the proximity to capacitive operation | Markus Heckmann | 2004-03-16 |
| 6404259 | Device for generating digital control signals | — | 2002-06-11 |
| 6291947 | Circuit arrangement for operating at least one discharge lamp | Richard Koeppl, Martin Grabner | 2001-09-18 |
| 6191677 | Inductance element | Bernhard Orben, Richard Koeppl, Rene Twardzik, Jerzy Cierpinski, Martin Grabner +2 more | 2001-02-20 |