Patents Assigned to Haas Hop Products, Inc.
  • Process for hydrogenation of isoalpha acids
    Patent number: 6198004
    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.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: March 6, 2001
    Assignee: Haas Hop Products, Inc.
    Inventors: John Paul Maye, Jianping Xu, George Gauthier, Scott W. Weis