Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6705272 | Air intake system with an air filter | Rudolf Leipelt, Robert Vaculik, Thomas Haubold | 2004-03-16 |
| 6688422 | Method and apparatus for actively influencing the intake noise of an internal combustion engine | Franc Pricken, Rolf Schirmacher | 2004-02-10 |
| 6503303 | Enclosure for an air aspirating machine | — | 2003-01-07 |
| 6341663 | Silencer with a shunt resonator | Matthias Alex | 2002-01-29 |
| 6148782 | Airflow device | — | 2000-11-21 |
| 6135079 | Air intake system for an internal combustion engine | — | 2000-10-24 |
| 6105546 | Intake system for an internal combustion engine | Hans-Joachim Esch | 2000-08-22 |
| 5722358 | Tube with variable inside diameter | Georg Knoch, Heinz Mueller, Helmut Spannbauer, Martin Weindorf | 1998-03-03 |
| 5560330 | Intake manifold and process for making it | Heinz Andress, Volker Ernst, Arthur Klotz, Rudolf Leipelt | 1996-10-01 |