Patents by Inventor John P. Lithgow

John P. Lithgow 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).

  • Tubular food casings with improved end closures
    Patent number: 4752486
    Abstract: Permanently bonded, highly reliable end-closures are formed on shirred tubular strands with less film waste and without applying adhesives by occluding deshirred film from one end of the strand and sealing the occludded film by the application of sufficient pressure and energy to cause gelation and adhesion of the film surfaces.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: June 21, 1988
    Assignee: Teepak, Inc.
    Inventors: Mark J. Niedenthal, Fredric N. Miller, Rodney J. Hine, John P. Lithgow