Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10234013 | Gearbox assembly for a twin-screw extruder, treatment installation for material treatment comprising a gearbox assembly of this type, and method for the startup of a treatment installation comprising a gearbox assembly of this type | Bernhard Wengert, Ralf Riehle | 2019-03-19 |
| 7547132 | Screw-type processing plant with elongation and expansion compensation devices | Ralf Davids, Carsten Koberg, Ralf Riehle | 2009-06-16 |