Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7207324 | Air-intake duct system for a combustion engine | Hans-Ulrich Kuhnel, Michael Sanders, Dieter Thonnessen | 2007-04-24 |
| 6213446 | Exhaust gas recirculation valve having means to free a stuck valve member | Heinrich Dismon, Dieter Thonnessen | 2001-04-10 |
| 5457957 | Method and apparatus for heating a catalytic converter upon cold engine starting | Gunter Hartel | 1995-10-17 |
| 5417059 | Burner system for detoxification or cleaning the exhaust gases of an internal combustion engine | Gunter Hartel, Riedel Rottges, Matthias Hullmann | 1995-05-23 |
| 5315867 | Apparatus for measuring the fraction of liquid fuel in a fuel tank | Gunter Hartel, Karl-Heinrich Losing, Johann Blasczyk, Harald Kerkmann | 1994-05-31 |
| 5245870 | Apparatus for measuring the fraction of liquid fuel in a fuel tank | Gunter Hartel, Karl-Heinrich Losing, Johann Blasczyk, Harald Kerkmann | 1993-09-21 |
| 5182942 | Process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine | Gunter Hartel, Karl-Heinrich Losing, Dieter Thonnesen, Ulrich Remde | 1993-02-02 |
| 5159898 | Process and apparatus for utilization of fuels with alcohol additives for an internal combustion engine | Gunter Hartel, Karl-Henrich Losing, Dieter Thonnessen, Ulrich Remde | 1992-11-03 |
| 4439376 | Flow proportioning device | Gunter Hartel | 1984-03-27 |
| 4434772 | Combustion mixture generator for internal combustion engines | Gunter Hartel, Werner Schiele, Valerio Bianchi, Anwar Abidin | 1984-03-06 |
| 4420439 | Constant pressure carburettors | Gunter Hartel, Anwar Abidin | 1983-12-13 |
| 4302407 | Heating of combustible mixture generators for internal combustion engines | Guunter Hartel | 1981-11-24 |