Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11938438 | Method and device for filtering contaminated air | Stephan Rickerts, Ernst Claussen, Frank Knödler, Sonja Dittscher | 2024-03-26 |
| 11731070 | Filter device | Rainer Matho, Andreas Mueller, Stephan Rickerts, Ernst Claussen, Frank Knoedler +1 more | 2023-08-22 |
| 11549704 | Filter device and method for changing a filter element | Rainer Matho, Andreas Mueller, Stephan Rickerts, Ernst Claussen, Frank Knoedler +1 more | 2023-01-10 |