Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5822978 | Method of controlling the electric heating of a catalytic converter | Walter Streit, Rainer Mertl, Erhard Otto, Achim Donnerstag, Kurt Maute +1 more | 1998-10-20 |
| 5635771 | Secondary accumulator charging/discharging for a motor vehicle using a controllable resistor | Rainer Mertl, Erhard Otto, Walter Streit, Kurt Maute, Dirk Katzenellenbogen | 1997-06-03 |