Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11458421 | Filter apparatus | Alexander Wohlers, John R. Otto | 2022-10-04 |
| 10066652 | Filter device | — | 2018-09-04 |
| 9764260 | Filtering device, and filtering element for use in such a filtering device | Volker Backes | 2017-09-19 |
| 8480774 | Filter device, particularly reflux vacuum filter, and filter element for such a filter device | Stefan Marschall | 2013-07-09 |
| 8419937 | Filter device and filter element | Silke Kühnrich | 2013-04-16 |
| 7591490 | Coupling device for the quick-release coupling of hose-like or tubular pipes to a connecting part | — | 2009-09-22 |
| 7354076 | Fitting for formation of a fluid-conducting connection | — | 2008-04-08 |
| 7279091 | Filter device | Norbert Sann | 2007-10-09 |
| 7232158 | Fitting for formation of a fluid-conducting connection | — | 2007-06-19 |
| 7232518 | Filter device | — | 2007-06-19 |
| 6733666 | Filtering device, especially a suction return filter | Holger Wegmann | 2004-05-11 |
| 5073260 | Switchover device | — | 1991-12-17 |