Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6875962 | Electric heating system for a motor vehicle | Steffen Geiger, Thomas Alban, Thomas Giffels, Dirk Wenske, Andreas Hamburger +1 more | 2005-04-05 |
| 6872922 | Method for operating a multi-stage electrical heater comprised of several heating elements | — | 2005-03-29 |
| 6736098 | Method and device for controlling the heating of the glow plugs in a diesel engine | Olaf Toedter, Heinz-Georg Schmitz | 2004-05-18 |
| 6712032 | Method for heating up an electrical heating element, in particular a glow plug for an internal combustion engine | Olaf Toedter, Heinz-Georg Schmitz | 2004-03-30 |
| 6635851 | Process and circuit for heating up a glow plug | — | 2003-10-21 |
| 5784472 | Process and circuitry for the supplying of loudspeakers and other electrical consumers in vehicle doors with signals | Joachim Ney, Norbert Normann, Gunter Schulze | 1998-07-21 |