Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12350607 | Filter device | Gerhard Stehle, Michael Sakraschinsky, Sven Peter WOZNIAK, John R. Otto, Alexander Wohlers +5 more | 2025-07-08 |
| 10213709 | Filter element and hydraulic circuit with such a filter element | Frank Oberli | 2019-02-26 |
| 9849408 | Filter element | Gerhard Stehle | 2017-12-26 |