Patents by Inventor John J. Evyan

John J. Evyan 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).

  • Burnished end shirred casing stick, method and apparatus
    Patent number: 4873748
    Abstract: A shirred stick of cellulosic casing having an open end formed to a desired profile by burnishing. A portion of the surface of the stick bore adjacent the open end is part of the desired profile. The burnishing action forms the stick end to a surface of revolution which is symmetrical about the longitudinal axis of the stick.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: October 17, 1989
    Assignee: Viskase Corporation
    Inventors: John J. Evyan, Orville D. Booth