Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6361577 | Cassette filter | Dieter Unrath | 2002-03-26 |
| 6352665 | Method for producing a tubular according filter element | Dieter Unrath | 2002-03-05 |
| 6059966 | Cartridge filter with frame | Andreas Brandhofer, Matthias Schuster, Hans-Joachim Lippold, Jorgen Knudsen | 2000-05-09 |
| 6056799 | Tubular accordion filter element | Dieter Unrath | 2000-05-02 |
| 5695535 | Pocket filter | Dieter Hintenlang, Dieter Unrath, Udo Michaelis | 1997-12-09 |