Patents by Inventor Fritz G. Sietz

Fritz G. Sietz 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 purifying phosphatides
    Patent number: 4166823
    Abstract: A process for purifying phosphatides to obtain transparent phosphatides wherein crude phosphatides are subjected to the combined action of a hydrophobic liquid and water is described. The two liquids are separated and the purified phosphatide product is recovered from the hydrophobic liquid. In this way, a transparent phosphatide product is obtained.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: September 4, 1979
    Assignee: Thomas J. Lipton, Inc.
    Inventor: Fritz G. Sietz