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. 12, 1999
Filed:
Oct. 29, 1996
Applicant:
Inventor:
George Gauthier, Groton, CT (US);
Assignee:
Cultor Food Service, Inc., Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C12C / ;
U.S. Cl.
CPC ...
568347 ; 568377 ; 568350 ; 426422 ; 426600 ; 562400 ; 502301 ; 502315 ; 502325 ;
Abstract
A process for the removal of catalyst poisons from hops and hop extracts is disclosed. After processing the hops to extract the alpha or beta acids therein, the alpha or beta acids are treated with activated nickel catalyst. The activated nickel catalyst binds the catalyst poisons which are believed to be sulfur containing compounds. The activated nickel and catalyst poisons are separated from the alpha or beta acids, and the alpha or beta acids are then hydrogenated and isomerized into tetrahydroisoalpha acids.