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:
Apr. 23, 1985
Filed:
Apr. 18, 1983
Applicant:
Inventors:
Saul N Katz, Monsey, NY (US);
George E Proscia, West Sayville, NY (US);
Assignee:
General Foods Corporation, White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544275 ; 544274 ;
Abstract
The recovery of caffeine from activated carbon is accomplished according to the present invention by employing an aqueous acetic acid solution, preferably having a concentration of between about 50 and 80%, by weight, and which is capable of competing for the active sites on the carbon occupied by the caffeine to displace at least a portion of the caffeine which is then dissolved in the solvent. After the desired period of contact, preferably at a temperature above 100.degree. C., the caffeine is separated from the solution.