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. 13, 2008
Filed:
Sep. 01, 2004
Antti Hamunen, Raisio, FI;
Keijo Ukkonen, Kuusankoski, FI;
Antti Hamunen, Raisio, FI;
Keijo Ukkonen, Kuusankoski, FI;
Sterol Technologies Ltd., Raisio, FI;
Abstract
The present invention describes a method for separating sterols from neutral substances comprising the sterols. The method generally starts with extracting a hydrocarbon fraction from neutral substances. The hydrocarbon fraction may be optionally washed with water. The neutral substances are separated from the hydrocarbon. The hydrocarbon fraction or the neutral substances are subjected to evaporation fractionating to obtain a sterol-rich fraction. The sterol-rich fraction is dissolved in a solvent, and the sterols are crystallized from the solvent. The obtained sterol crystals are separated from the solvent.