Patents by Inventor John I. Hess

John I. Hess 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).

  • Test apparatus for determining quality of packaging for vacuum packaged products
    Patent number: 3998091
    Abstract: Apparatus is disclosed which holds a vacuum packaged product and applies a stress on the package to determine the quality of the package by measuring package deflection resulting from the stress.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: December 21, 1976
    Inventors: Michael W. Paquette, John I. Hess, William J. Haber