Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7598687 | Method and control unit for controlling fan motors | Stefan Koch, Karl-Heinrich Preis | 2009-10-06 |
| 7595605 | Method and control circuit for determining an operating state when controlling a fan motor | Stefan Koch | 2009-09-29 |
| 7166976 | Method and control circuit for reducing line-bound disturbances in a pulse-width modulated control of an electric motor | Stefan Koch | 2007-01-23 |
| 7038407 | Circuit arrangement and method for operation of an electric motor in a DC supply network | Stefan Koch | 2006-05-02 |
| 5959817 | Control device for operating a wiper motor | Martin Kessler | 1999-09-28 |