Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6110435 | Method and device for nitric oxide reduction in exhaust fumes | Wolfgang Lehner, Friedrich Wirbeleit | 2000-08-29 |
| 5907950 | System for injecting nitrogen-oxide-reducing agents into an exhaust stream | Christian Enderle, Alois Raab, Friedrich Wirbeleit | 1999-06-01 |