Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8931516 | Pilot-controlled valve having a ceramic control piston | Ralf Woerner | 2015-01-13 |
| 7150292 | Electropneumatic double control valve comprising a sealing arrangement | Friedbert Roether, Eberhard Schaffert | 2006-12-19 |
| 7059688 | Electropneumatic control valve comprising a guide arrangement for a control piston | Friedbert Roether, Joachim Delfs, Eberhard Schaffert, Günther Strobel, Hans Haecker +1 more | 2006-06-13 |
| 7052095 | Electropneumatic control valve with a back-up valve | Friedbert Roether, Eberhard Schaffert | 2006-05-30 |
| 6948525 | Pilot valve comprising a valve seat arrangement | Friedbert Roether, Eberhard Schaffert | 2005-09-27 |
| 6792971 | Pilot control valve having a pressure compensation | Friedbert Roether, Eberhard Schaffert | 2004-09-21 |