Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Heinz-Helmer Rasche0
Kerstin Woltmann0
Kirsten Wilbrand0
Date of Patent
May 22, 2007
0Patent Application Number
104009360
Date Filed
March 28, 2003
0Patent Primary Examiner
Patent abstract
A method of separating cresol from mares' urine by pervaporation using pore-free polymeric silicone membranes in which starting urine solutions containing high-quality and -quantity conjugated estrogens with a reduced or substantially removed cresol content are provided which are advantageously suitable for obtaining natural mixtures of conjugated estrogens from pregnant mares' urine.
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