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:
Oct. 22, 1985
Filed:
Mar. 30, 1982
Saul N Katz, Monsey, NY (US);
George E Proscia, West Sayville, NY (US);
George L Clisura, Weehawken, NJ (US);
General Foods Corporation, White Plains, NY (US);
Abstract
The present invention relates to a method of separately recovering caffeine and non-caffeine solids adsorbed on activated carbon. Activated carbon containing the adsorbed solids is contacted with an aqueous basic solution to elute the non-caffeine coffee solids. The two components are separated. The activated carbon is subsequently contacted with a concentrated aqueous acidic solution to elute the relatively pure caffeine. The two components are separated. The non-caffeine solids in the basic solution may be re-adsorbed onto the activated carbon. Essentially pure caffeine may be refined from the aqueous acidic solution.