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:
Aug. 19, 2008
Filed:
Dec. 23, 2002
Patrick L. Ting, Brookfield, WI (US);
Henry Goldstein, Tucson, AZ (US);
Aki A. Murakami, Mequon, WI (US);
Michael Vansanford, Wales, WI (US);
Jay R. Refling, Greenfield, WI (US);
John R. Seabrooks, Richfield, WI (US);
David S. Ryder, Mequon, WI (US);
Patrick L. Ting, Brookfield, WI (US);
Henry Goldstein, Tucson, AZ (US);
Aki A. Murakami, Mequon, WI (US);
Michael VanSanford, Wales, WI (US);
Jay R. Refling, Greenfield, WI (US);
John R. Seabrooks, Richfield, WI (US);
David S. Ryder, Mequon, WI (US);
MillerCoors LLC, Wilmington, DE (US);
Abstract
Disclosed are methods for the production of light stable hop products, useful for the brewing of beer or ale to be stored in clear or green glass containers, which beer or ale will not develop objectionable flavor as a result of exposure to light. Light stable hop products are prepared by double extraction of liquid/supercritical COextracted hop solids with ethanol to remove alpha/iso-alpha-acids. Such alpha/iso-alpha-acids may be further removed from the ethanol extraction filtrate obtained in the double extraction process by subjecting such filtrate to an ion exchange medium, or precipitation by a metal ion, heavy metal ion, or alkali metal ion, or hydrogenation to provide an alpha/iso-alpha-acids free filtrate which may be added to the light stable double extracted hop solid residues obtained in the initial double extraction process.