Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7621121 | Method and arrangement for purifying exhaust gas in an internal combustion engine | Roger Tengblad, John Korsgren, Maria Karlsson | 2009-11-24 |
| 7225612 | Method and apparatus for conversion of NOx | Hans Bernler, Roger Tengblad, Gisela Blomkvist | 2007-06-05 |
| 7188514 | Method for providing an oil change indication to an operator of an internal combustion engine | Gisela Blomkvist, Arne Andersson | 2007-03-13 |