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Ernst Friederich
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Darmstadt, DE
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last 30 patents
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Patent Grant
Multilayer web panel and a process for its manufacture
Patent number
4,569,875
Issue date
Feb 11, 1986
Rohm GmbH Chemische Fabrik
Klaus E. Pohlmann
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Extrusion nozzle
Patent number
4,372,739
Issue date
Feb 8, 1983
RoGmbH
Heinz Vetter
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for making biaxially stretched articles of thermoplastic resin
Patent number
4,235,834
Issue date
Nov 25, 1980
Rohm GmbH
Heinz Vetter
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for injection molding of hollow shaped bodies from thermopla...
Patent number
4,101,617
Issue date
Jul 18, 1978
Rohm GmbH
Ernst Friederich
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL