Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5507264 | Ignition system for internal combustion engines with misfiring detection by comparing the same ignition coil | Karlheinz Riedel | 1996-04-16 |
| 5488940 | Ignition system for internal combustion engines | Walter Gollin, Karlheinz Riedel, Christian Zimmermann | 1996-02-06 |
| 5462036 | Ignition system for internal combustion engines | Walter Gollin, Karlheinz Riedel, Christian Zimmermann | 1995-10-31 |
| 5446385 | Ignition system for internal combustion engines | Walter Gollin, Christian Zimmermann | 1995-08-29 |
| 5383434 | Method of damping engine vibrations | Karlheinz Riedel | 1995-01-24 |
| 5334938 | Method of monitoring an internal combustion engine ignition system by measuring spark duration or voltage and distinction between isolated errors and recurrent errors | Arnd-Matthias Langner, Karlheinz Riedel, Richard Schleupen, Christian Zimmermann | 1994-08-02 |
| 5109825 | Method and arrangement for recognizing misfires | Heinz Joos, Hans Kohnle | 1992-05-05 |
| 5046470 | Method of and device for monitoring combustion in a spark ignition internal combustion engine | Robert Entenmann, Siegfried Rhode, Ulrich Rothaar, Bernhard Stengel, Oskar Torno +2 more | 1991-09-10 |
| 5027073 | High voltage ignition system monitoring circuit | Ernst Kaller, Christian Zimmermann, Hans Koehnle | 1991-06-25 |