Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6179460 | Twin screw extruder with single-flight kneading disks | Ulrich Burkhardt | 2001-01-30 |
| 6048088 | Multi-shaft screw-type extruder, in particular twin-shaft extruder | Erwin Haring, Ulrich Burkhardt | 2000-04-11 |
| 5797677 | Screw-type extruding machine having a screw element defining a groove with an expansion region at each end thereof | Wolfgang Woerz, Reinhard Wuttke, Rainer Sauter | 1998-08-25 |
| 5573332 | Screw element for a screw-like extrusion machine | Werner Wiedmann | 1996-11-12 |
| 5549383 | Screw-type extrusion machine with heating elements | Arno Knoll, Hans Wobbe | 1996-08-27 |
| 4877390 | Degassification device for a screw extruder which processes plastic material | Herbert Ocker | 1989-10-31 |
| 4824256 | Co-rotating twin-screw kneaders with kneading disks | Erwin Haring, Wolfgang Worz | 1989-04-25 |