Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8704480 | Method for the operation of synchronous motors, and associated device | Marcel Benecke | 2014-04-22 |
| 8466640 | Method for slowing-down control of an asynchronous machine | Dirk Hertz, Stefan Zitzler | 2013-06-18 |
| 7933109 | Electromagnetic switching device and method for the operation thereof | Norbert Mitlmeier | 2011-04-26 |
| 7592771 | Method for operating a two-phase rotary current controller | Andreas Fritsch, Gerd Griepentrog | 2009-09-22 |
| D558684 | Control part of an electronic device | Marco Dornauer, Dirk Hertz, Peter Kaluza, Alexander Muller | 2008-01-01 |
| 7224287 | Method for determining the switching state of a contact and evaluation circuit corresponding thereto | Peter Heider, Bernhard Streich | 2007-05-29 |
| 6930459 | Method for reducing the influence of a DC current component in the load current of an asynchronous motor | Andreas Fritsch, Gerd Griepentrog, Johann Seitz | 2005-08-16 |
| 6870333 | Method for operating asynchronous motors and corresponding device | Gerd Griepentrog, Lynn Stewart Johnson | 2005-03-22 |
| 6781810 | Reduced tensioning time for electronically controlled switch contactors | Wilfried Jaehner, Franz Ultsch, Bernhard Streich, Reinhard Maier | 2004-08-24 |
| 6765316 | Method for averaging out overall burn up in an electromagnetic switching device and a corresponding electromagnetic switching device | Norbert B. Elsner, Gerd Griepentrog, Reinhard Herbst, Reinhard Maier, Norbert Mitlmeier +2 more | 2004-07-20 |
| 6667596 | Method and device for controlling deceleration in an induction machine | Gerd Griepentrog | 2003-12-23 |
| 6594592 | Method and device for determining the torque of an induction machine | Gerd Griepentrog | 2003-07-15 |
| 6466002 | Method for detecting a rotation direction in three-phase networks | Norbert B. Elsner | 2002-10-15 |
| 6414463 | Method for measuring the speed of an induction machine | Gerd Griepentrog | 2002-07-02 |
| 5825154 | Phase control method of stopping a drive smoothly | Johann Seitz | 1998-10-20 |
| 5410240 | Method and device for open-loop control of single-phase or multiphase A.C. power controllers | Bruno C. Doerwald | 1995-04-25 |
| 5239252 | Method and apparatus for controlling single or multiphase A.C. power controllers | B. Claus Doerwald | 1993-08-24 |
| 5159657 | Method and apparatus for controlling single or polyphase a.c. power controllers | B. Claus Doerwald | 1992-10-27 |