Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637974 | Active carbon coated filter element for preventing the leaking of hydrocarbons | Hans-Peter Scholl, Heinz Daubner, Johann Rackerseder, Reinhold Lebherz, Frank Pfeiffer +3 more | 2009-12-29 |
| 5125941 | Air intake filter for internal combustion engines | Volker Ernst, Herbert Hack | 1992-06-30 |
| 4717860 | Mounting for an output window of an x-ray image intensifier | Hermann Christgau, Norbert Mika, Heinz Roehrich | 1988-01-05 |