Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 21, 2008
Patent Application Number
10857355
Date Filed
June 1, 2004
Patent Primary Examiner
Patent abstract
A method for obtaining an extract from a natural mixture of conjugated estrogens from the urine of pregnant mares (PMU) by solid-phase extraction on semipolar adsorption resins in which the resulting extract meets the pharmaceutical specifications for conjugated estrogens and the content of free estrogens is minimized even if old pregnant mares' urine and/or pregnant mares' urine which has been stored or transported at elevated temperatures is used.
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