Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9746513 | Circuit arrangement with a thyristor circuit, as well as a method for testing the thyristor circuit | Martin Geske, Siegfried Nowak | 2017-08-29 |
| 8583059 | Method and circuit for operating a power semiconductor component | Christian Keller | 2013-11-12 |
| 7650968 | Elevator rescue operation control system including selective transformer winding energization | Marvin Dehmlow, Axel Friedrich | 2010-01-26 |
| 6634463 | Switch over from the mains supply to a frequency converter by a phase correction process for an escalator drive | Stefan Spannhake, Michael Mann, Gunter Blechschmidt, Peter Walden, Michael Bernhard Kocur | 2003-10-21 |
| 6037686 | Current compensated choke filter for multi-phase motor drives | Uwe Schonauer, Christoph M. Ernecke | 2000-03-14 |