Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11938438 | Method and device for filtering contaminated air | Stephan Rickerts, Ernst Claussen, Hauke Petersen, Frank Knödler | 2024-03-26 |
| 11731070 | Filter device | Rainer Matho, Andreas Mueller, Stephan Rickerts, Ernst Claussen, Hauke Petersen +1 more | 2023-08-22 |
| 11549704 | Filter device and method for changing a filter element | Rainer Matho, Andreas Mueller, Stephan Rickerts, Ernst Claussen, Hauke Petersen +1 more | 2023-01-10 |
| 5170687 | Machine for cutting staple fibers | Johann Ratjen, Holger Brandt, Heiner Kudrus | 1992-12-15 |