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:
Sep. 07, 1982
Filed:
May. 17, 1978
Applicant:
Inventor:
Kurt Zosel, Oberhausen, DE;
Assignee:
Studiengesellschaft Kohle m.b.H., Kaiser-Wilhelm-Platz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A23F / ;
U.S. Cl.
CPC ...
426475 ; 426427 ; 426478 ;
Abstract
A process for the direct decaffeination of aqueous coffee extract solutions by contacting the surface of a thin film of an aqueous coffee extract solution with carbon dioxide under supercritical conditions of temperature and pressure to thereby remove the caffeine into the CO.sub.2 and directly recover the aqueous coffee extract solution substantially free from caffeine. The contacting of the aqueous coffee extract solution and the CO.sub.2 is preferably effected by passing the aqueous coffee extract solution downwardly through a packed column, while passing the CO.sub.2 upwardly in countercurrent contact therewith.