Patents by Inventor Charles Joseph Mackus

Charles Joseph Mackus 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 and apparatus for use in manufacture of cellulose casing
    Patent number: 6565796
    Abstract: Disclosed is a method of sizing nonderivatized extruded cellulosic tubes by the use of a mandrel structure that 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. The mandrel contains a sizing portion larger than the extruded tube, which allows for improved sizing of nonderivatized extruded tubes that are used as casings.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: May 20, 2003
    Assignee: Viskase Corporation
    Inventors: Owen Joseph McGarel, Mickel E. Knight, Charles Joseph Mackus