Patents by Inventor Howard R. Spires

Howard R. Spires 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).

  • Ruminant animal performance by co-administering choline and propionate enchancers
    Patent number: 4394377
    Abstract: The availability of supplemental dietary choline to animals with a developed rumen is increased by co-administering choline or choline compounds with a propionate-enhancing antibiotic compound.
    Type: Grant
    Filed: July 31, 1981
    Date of Patent: July 19, 1983
    Assignee: Syntex (U.S.A.) Inc.
    Inventor: Howard R. Spires