Patents by Inventor Robert C. LeFreniere

Robert C. LeFreniere 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).

  • Method for producing deep red and black cocoa
    Patent number: 5009917
    Abstract: A deep red or black dutched cocoa is produced by alkalizing cocoa presscake at between 150.degree. to 300.degree. F., 10 to 200 p.s.i. and 5 to 180 minutes. During the alkalization reaction, the reaction vessel is partially vented and an oxygen-containing gas is fed to the reaction vessel to maintain pressure and effect headspace changes at the rate of at least 3 per hour.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: April 23, 1991
    Assignee: Kraft General Foods, Inc.
    Inventors: Matthew J. Wiant, William R. Lynch, Robert C. LeFreniere