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. 01, 2001
Filed:
Jan. 31, 1997
Applicant:
Inventors:
Richard Llewellyn Powell, Tarporley, GB;
Timothy James Noakes, Near Mold, GB;
Peter Frederick Wilde, Thirsk, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
A23L 1/00 ; C11B 1/00 ; A24B 1/526 ; B01D 1/100 ;
U.S. Cl.
CPC ...
A23L 1/00 ; C11B 1/00 ; A24B 1/526 ; B01D 1/100 ;
Abstract
A process for extracting a compound or composition of matter from a raw material containing that compound or composition as a constituent part is disclosed. The process comprises the steps of (1) contacting a sample of the raw material with an extraction solvent comprising 1,1,1,2-tetrafluoroethane and a co-solvent selected from an alkane and a hydrocarbon ether, (2) forming a solvent liquor comprising the extraction solvent and an extract from the raw material, and (3) separating the solvent liquor containing the extract from the raw material.