Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6392520 | Current coil | Karl Hofmann, Martin Hafner | 2002-05-21 |
| 5161742 | Fuel injection nozzle for internal combustion engines | Karl Hofmann, Bernhard Kaczynski, Ursula Schoedel, Alfred Knauer, Ulrich Lessing | 1992-11-10 |