Patents by Inventor Ronald Joseph Jerantowski

Ronald Joseph Jerantowski 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
  • Cellulose food casing manufacturing method
    Patent number: 5766540
    Abstract: The tubular extrusion of a thermoplastic nonderivatized cellulose solution about a mandrel and through a long air gap in excess of 304 mm is facilitated by use of a mandrel which is extensible from the extrusion die. On extrusion start-up, the mandrel extends a short length from the die. For steady-state operation, the mandrel is extended its full length from the die. Also disclosed is a mandrel structure to facilitate the introduction of a nonsolvent liquid into the interior of the extruded tube at a high location on start-up of extrusion and at a lower location during steady-state operation.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: June 16, 1998
    Assignee: Viskase Corporation
    Inventors: Edward Makoto Kajiwara, Joseph Robert Walta, Ronald Joseph Jerantowski