Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5417848 | Coalescence separator with changeable coalescence element | Gerd Kappus, Eberhard Kolitz | 1995-05-23 |
| 4948549 | Process for producing soot filter elements | Helmuth Fischer, Helmut Rocker, Hartmut Wolff, Fritz Zundel | 1990-08-14 |
| 4632682 | Cartridge-type oil separator air filter | — | 1986-12-30 |
| 4619674 | Dual-element filter cartridge for air intake filters designed for a dusty environment | — | 1986-10-28 |
| 4516990 | Method of removing soot from exhaust gases | Manfred Wagner, Rudi Numrich, Gerd Weyh | 1985-05-14 |
| 4436535 | Method and device for removing soot from exhaust gases | Manfred Wagner, Gerd Weyh | 1984-03-13 |
| 4418662 | Engine air intake filter with fumes-absorbing substance | Walter Engler, Heinz Muller, Manfred Wagner | 1983-12-06 |
| 4324572 | Soot filter for an exhaust arrangement of an internal combustion engine | Horst Bergmann, Helmut Daudel | 1982-04-13 |
| 4271025 | Layered filter cartridge with internal bypass channels | — | 1981-06-02 |
| 4203739 | Separator device for removing oil from an air stream | — | 1980-05-20 |
| 4198217 | Protective air filter intake hood with air deflecting intake screen | — | 1980-04-15 |