Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9531304 | Method and device for operating an electrical machine having separate excitation | Mercedes Herranz Gracia, Stefan Kolmorgen, Yves Challand, Daniel Raichle, Mario Beyer +3 more | 2016-12-27 |
| 9059584 | Circuit arrangement for limiting the overvoltage of an excitation winding of a synchronous machine having rapid de-excitation | Jochen Fassnacht, Hans-Peter Mueller | 2015-06-16 |
| 7650954 | Method for controlling the drive power distribution in a motor vehicle with hybrid drive | Axel Ibenthal, Thomas Proske, Matthias Schultalbers | 2010-01-26 |
| 6782989 | Process for switching between mains supply and a frequency inverter and vice versa | Herbert Horbrugger, Reinhard Henkel | 2004-08-31 |
| 6634463 | Switch over from the mains supply to a frequency converter by a phase correction process for an escalator drive | Michael Mann, Gunter Blechschmidt, Peter Walden, Robert Oesterle, Michael Bernhard Kocur | 2003-10-21 |
| 6626279 | Process for switching between main supply and a frequency inverter and vice versa for an escalator drive | Reinhard Henkel, Ralph S. Stripling, Richard Markus | 2003-09-30 |
| 6591947 | Use of multi-state sensors | Herbert Horbrugger, Peter Herkel | 2003-07-15 |
| 6267219 | Electronic safety system for escalators | Reinhard Henkel, Jurgen Gewinner | 2001-07-31 |
| 5883345 | Sonic position measurement system | Uwe Schonauer | 1999-03-16 |