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Patents Grants
last 30 patents
Information
Patent Grant
Process and device for producing high-viscosity or highly stabilize...
Patent number
6,258,926
Issue date
Jul 10, 2001
Polymer Engineering GmbH
Karl-Heinz Wiltzer
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information
Patent Grant
Process and device for the standardized continuous production of po...
Patent number
6,136,947
Issue date
Oct 24, 2000
Polymer Engineering GmbH
Karlheinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process and device for continuous production of polyamides
Patent number
6,107,449
Issue date
Aug 22, 2000
Polymer Engineering GmbH
Karlheinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for continuously preparing a polyamide 6 with a low dimer c...
Patent number
5,973,105
Issue date
Oct 26, 1999
Polymer Engineering GmbH
Karlheinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of continuously producing polyamide 6 using recycled lactam
Patent number
5,962,538
Issue date
Oct 5, 1999
Polymer Engineering GmbH
Karlheinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and apparatus for the production of polyamide 6 from polymid...
Patent number
5,902,553
Issue date
May 11, 1999
Polymer Engineering GmbH
Karl-Heinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and apparatus for the production of polyamide 6 from polyami...
Patent number
5,646,191
Issue date
Jul 8, 1997
Polymer Engineering GmbH
Karl-Heinz Wiltzer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method and apparatus for reprocessing solid polyester material
Patent number
5,597,852
Issue date
Jan 28, 1997
Polymer Engineering GmbH
Reinhard Unger
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL