Patents by Inventor Mark Griffith Williams

Mark Griffith Williams 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).

  • Mandrel structure for use in manufacture of cellulose food casing
    Patent number: 6444161
    Abstract: Disclosed is a mandrel structure for extruding a tube composed of a non derivatized cellulose. The mandrel includes a hollow sizing portion having openings which gather gas bubbles that may evolve at the interface between the extruded tube and the sizing portion and allows the gas to pass into the hollow interior of the mandrel.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: September 3, 2002
    Assignee: Viskase Corporation
    Inventors: Mark Griffith Williams, Larry Clyde Long, Owen Joseph Mc Garel, Ronald Joseph Jerantowski, James Joseph Albert