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. 06, 2001
Filed:
Jun. 10, 1999
Applicant:
Inventors:
John Paul Maye, Great Falls, VA (US);
Jianping Xu, Gaithersburg, MD (US);
George Gauthier, Groton, CT (US);
Scott W. Weis, Milwaukee, WI (US);
Assignee:
Haas Hop Products, Inc., Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 4/567 ; C12C 3/00 ;
U.S. Cl.
CPC ...
C07C 4/567 ; C12C 3/00 ;
Abstract
The invention relates to a process for converting alpha acid and isoalpha acids to tetrahydroisoalpha acid. The process comprises isomerizing an alpha acid to produce isoalpha acid and hydrogenating the isoalpha acid in the presence of a noble metal catalyst wherein, the noble metal catalyst is added incrementally or continuously throughout the hydrogenation step. The invention also relates to tetrahydroisoalpha acids made by the above process.