Gerhard Weihrich

Person

Illingen, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Twin screw extruder with single-flight kneading disks
- Patent number 6,179,460
- Issue date Jan 30, 2001
- Krupp Werner & Pfleiderer, GmbH
- Ulrich Burkhardt
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Multi-shaft screw-type extruder, in particular twin-shaft extruder
- Patent number 6,048,088
- Issue date Apr 11, 2000
- Krupp Werner & Pfleiderer GmbH
- Erwin Haring
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Screw-type extruding machine having a screw element defining a groo...
- Patent number 5,797,677
- Issue date Aug 25, 1998
- Werner & Pfleiderer GmbH
- Gerhard Weihrich
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Screw element for a screw-like extrusion machine
- Patent number 5,573,332
- Issue date Nov 12, 1996
- Werner & Pfleiderer GmbH
- Gerhard Weihrich
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Screw-type extrusion machine with heating elements
- Patent number 5,549,383
- Issue date Aug 27, 1996
- Werner & Pfleiderer, GmbH
- Arno Knoll
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Degassification device for a screw extruder which processes plastic...
- Patent number 4,877,390
- Issue date Oct 31, 1989
- Werner & Pfleiderer GmbH
- Herbert Ocker
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Co-rotating twin-screw kneaders with kneading disks
- Patent number 4,824,256
- Issue date Apr 25, 1989
- Werner & Pfleiderer
- Erwin Haring
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Gerhard Weihrich

Person

Patents Grantslast 30 patents

Twin screw extruder with single-flight kneading disks

Multi-shaft screw-type extruder, in particular twin-shaft extruder

Screw-type extruding machine having a screw element defining a groo...

Screw element for a screw-like extrusion machine

Screw-type extrusion machine with heating elements

Degassification device for a screw extruder which processes plastic...

Co-rotating twin-screw kneaders with kneading disks