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. 27, 1999
Filed:
Aug. 05, 1997
Elke Gerhard-Rieben, Le Mont sur Lausanne, CH;
Claude Rene Lebet, Charvonay, CH;
Valerie Leloup, Lausanne, CH;
Klaus Schlecht, Orbe, CH;
Nestec S.A., Vevey, CH;
Abstract
A process for the counter-current extraction of soluble coffee solids. Soluble coffee solids are extracted from roast and ground coffee in a first extraction stage using a primary extraction liquid at a temperature of 80.degree. C. to 160.degree. C. Then soluble coffee solids are extracted from the partially extracted grounds in a second extraction stage using a secondary extraction liquid at a temperature of 160.degree. C. to 190.degree. C., the coffee grounds having at least 25% by weight of soluble coffee solids extracted from them. The coffee grounds obtained from the second extraction stage are drained and thermally hydrolyzed in a hydrolysis stage at a temperature of 160.degree. C. to 220.degree. C. for 1 to 15 minutes. Soluble coffee solids are extracted from the hydrolyzed coffee grounds in a third extraction stage using a tertiary extraction liquid at a temperature of 170.degree. C. to 195.degree. C. to provide extracted coffee grounds and a hydrolyzed coffee extract.