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:
Mar. 26, 1985
Filed:
Feb. 03, 1982
Herbert L Grant, Yakima, WA (US);
S. S. Steiner, Inc., New York, NY (US);
Abstract
An improved process for the selective extraction of the alpha acids contents of hops using liquid carbon dioxide as solvent is described. Solubility of the alpha acids in liquid carbon dioxide is enhanced by addition of a minor amount of a selected organic substance which: (1) is non-reactive with the alpha acids of interest, and (2) has the following physical properties: (a) is completely soluble in liquid carbon dioxide in the operating conditions and concentrations employed, and (b) is itself a solvent for the alpha acids of interest. Preferably the organic substance is a 1 to 4 carbon atom aliphatic alcohol in an amount of about 0.1 to about 30 volume percent.