The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1998
Filed:
Aug. 25, 1994
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07H / ; B01D / ; C07D / ; C07C / ;
U.S. Cl.
CPC ...
536127 ; 422256 ; 536-111 ; 536-41 ; 536115 ; 536124 ; 549231 ; 552502 ; 562869 ; 568700 ;
Abstract
A process for obtaining pharmacologically active compounds from complex mixtures of substances Free organic acids, hydroxy acids, fatty alcohols, sugars and hydroxy-substituted steroids are obtained from complex mixtures of substances by mixing the material to be extracted with a polar solvent, drying the resulting mixture, subsequently silylating, esterifying or acylating, and extracting the resulting material with a supercritical fluid under a pressure of more than 200 bar.