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. 02, 1984
Filed:
Dec. 27, 1982
Lowen R Morrison, Jr, Hamilton, OH (US);
John H Phillips, Fairfield, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
This invention relates to an improved countercurrent extraction process for accelerated decaffeination of coffee beans, and to the novel decaffeinated coffee product generated thereby. In particular, turbulent flow of the extracting solvent is used to obtain a substantially accelerated decaffeination rate involving a caffeine extraction time of only from about 3 to about 5 hours. Since the rate of extraction of non-caffeine coffee solubles is not correspondingly accelerated, the decrease in extraction time minimizes the loss of these valuable materials. Use of multiple vessels in countercurrent operation also decreases the loss of non-caffeine coffee solubles, resulting in an improved decaffeinated coffee.