Patents by Inventor Keith T. Westwood

Keith T. Westwood has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing tetrahydroisoalpha acids
    Patent number: 5600012
    Abstract: Tetrahydro-iso-.alpha.-acids ("THIAA") are prepared directly from iso-.alpha.-acids ("IAA") by hydrogenation. Free IAA are first dissolved in ethanol. The solution is then hydrogenated in the presence of a particular type of noble metal catalyst. Hydrogenation is controlled naturally by the reaction between the catalyst and the IAA so that the IAA will be selectively converted to THIAA without unacceptable perhydrogenation into other forms.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: February 4, 1997
    Assignee: John I. Haas, Inc.
    Inventors: William R. Poyner, Geoffrey Smith, Keith T. Westwood, David W. Hysert
  • Production of isomerized hop extract
    Patent number: 5015491
    Abstract: A method for the production of an isomerized hop preparation comprises mixing together hop extract with a solid alkaline or alkaline earth metal salt, and subjecting the resulting mixture to a temperature of at least 80.degree. C. for a time sufficient to effect conversion of .alpha.-acid to iso-.alpha.-acid. The method may be a stage in a process for brewing beer or the isomerized hop preparation may be further processed to produce high purity isomerized extracts.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: May 14, 1991
    Assignee: The Brewing Research Foundation
    Inventors: Keith T. Westwood, Allan Crescenzi