Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6880328 | Exhaust system of a multi-cylinder internal combustion engine and a method of cleaning an exhaust gas | Michael Daetz, Frank Wittig | 2005-04-19 |
| 5822978 | Method of controlling the electric heating of a catalytic converter | Walter Streit, Rainer Mertl, Erhard Otto, Kurt Maute, Alfred Wirth +1 more | 1998-10-20 |