Issued Patents All Time
Showing 51–75 of 120 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8427852 | Signal transmission arrangement with a transformer | — | 2013-04-23 |
| 8378695 | Determining the dead time in driving a half-bridge | — | 2013-02-19 |
| 8378590 | Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast | Antoine Fery, Michael Herfurth | 2013-02-19 |
| 8344640 | Method for operating a fluorescent lamp | — | 2013-01-01 |
| 8242702 | Method for driving a fluorescent lamp, and lamp ballast | — | 2012-08-14 |
| 8203335 | System and method for an inductive proximity switch on a common substrate | — | 2012-06-19 |
| 8184736 | Encoding bits into simultaneous pulse pairs | — | 2012-05-22 |
| 8125202 | Protection circuit for protecting a half-bridge circuit | Dieter Zipprick | 2012-02-28 |
| 8022637 | Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast | Antoine Fery, Michael Herfurth | 2011-09-20 |
| 7990073 | Method for operating a fluorescent lamp that is connected to a series resonant circuit | — | 2011-08-02 |
| 7982452 | Detection of a load state of a half-bridge | — | 2011-07-19 |
| 7894218 | Switch-mode converter | Antoine Fery | 2011-02-22 |
| 7834552 | Controlling a lamp ballast | Antoine Fery, Michael Herfurth | 2010-11-16 |
| 7825764 | Signal transmitter and signal transmission apparatus | — | 2010-11-02 |
| 7812612 | Method and apparatus for monitoring the operation of a gas discharge lamp | Michael Herfurth, Dieter Zipprick | 2010-10-12 |
| 7792197 | Method for transmitting data and data transmitter | — | 2010-09-07 |
| 7724545 | Switching converter having an activatable and deactivatable damping circuit | — | 2010-05-25 |
| 7696794 | Drive circuit for a switch in a switching converter | — | 2010-04-13 |
| 7683595 | Method for actuation, and actuating circuit for a switch in a power factor correction circuit | Michael Herfurth | 2010-03-23 |
| 7587193 | Signal transmission arrangement having a transformer and a receiver circuit | — | 2009-09-08 |
| 7560873 | Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast | Antoine Fery, Michael Herfurth | 2009-07-14 |
| 7492827 | Method for data transmission via a data transmission path with inductive transformers, and a data transmission apparatus | — | 2009-02-17 |
| 7474190 | Component arrangement with a planar transformer | Bernhard Strzalkowski | 2009-01-06 |
| 7378807 | Drive circuit for a fluorescent lamp with a diagnosis circuit, and method for diagnosis of a fluorescent lamp | Michael Herfurth, Antoine Fery | 2008-05-27 |
| 7312597 | Actuation circuit for a switch in a switch-mode converter for improving the response to sudden changes | Marc Fahlenkamp | 2007-12-25 |