Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7610895 | Method of operating an internal combustion engine in an engine warm-up phase | Roland Lutze, Heiko Sass | 2009-11-03 |
| 6789512 | Method for operating an internal combustion engine, and motor vehicle | Frank Duvinage, Ruediger Pfaff, Helko Sass, Lothar Welte | 2004-09-14 |