Assignee
BERSTORFF GMBH
DE18 patents
Top patents by PatentIndex Score
US6592350B1Jul 15, 2003
Underwater pelletizer with separator
BERSTORFF GMBH39 citations91
US6705753B2Mar 16, 2004
Extruder comprising blister mechanism
BERSTORFF GMBH20 citations89
US6463643B1Oct 15, 2002
Apparatus for withdrawing a screw from the barrel of a screw extruder
BERSTORFF GMBH24 citations89
US5499870AMar 19, 1996
Multiscrew, continuous mixing machine for plasticizable compounds
BERSTORFF GMBH32 citations89
US7354188B2Apr 8, 2008
Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas
BERSTORFF GMBH13 citations78
US6732620B1May 11, 2004
Cutting machine with rotating cutting blade
BERSTORFF GMBH13 citations77
US7017732B2Mar 28, 2006
Multiple extruder configuration
BERSTORFF GMBH9 citations72
US6974310B2Dec 13, 2005
Screw extruder and gear pump arrangement for highly viscous media
BERSTORFF GMBH7 citations72
US6805479B1Oct 19, 2004
Extrusion system comprising a screw changing device
BERSTORFF GMBH8 citations72
US6805480B1Oct 19, 2004
Cylinder for a twin-screw extruder with a helical channel of varying depth
BERSTORFF GMBH8 citations70
US7128546B2Oct 31, 2006
Underwater granulator with a water pipe mounted in a swivel joint
BERSTORFF GMBH9 citations69
US6474966B1Nov 5, 2002
Slot die for producing webs of a foamed plastic material
BERSTORFF GMBH11 citations68
US7011112B2Mar 14, 2006
Diverter valve for an extruder, in particular a twin-screw extruder
BERSTORFF GMBH10 citations65
US6827477B2Dec 7, 2004
Compounder installation
BERSTORFF GMBH6 citations61
US6550954B1Apr 22, 2003
Method for producing a compound from a flowable plastic material and a solid fiber core by means of extrusion and device for carrying out said method
BERSTORFF GMBH6 citations61
US6854873B2Feb 15, 2005
Extruder for processing rubber mixtures
BERSTORFF GMBH2 citations59
US7290923B2Nov 6, 2007
Extruder/gear pump assembly
BERSTORFF GMBH7 citations58
US6974243B2Dec 13, 2005
Screw element for same-sense rotating multi-screw extruders
BERSTORFF GMBH6 citations54