Patents by Inventor David Wayne Grams

David Wayne Grams 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 evacuating shrink film packages
    Patent number: 6491166
    Abstract: A heat shrinkable film package and a method for packaging food and non-food products is disclosed which includes a valve through which the package is evacuated during the heat shrinking step of the packaging process. Employing the valve of the present invention precludes the need for puncturing the film prior to heat shrinking. Thus, a wide variety of food products may be packaged in a manner more typically reserved for non-food products.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: December 10, 2002
    Assignee: Cryovac, Inc.
    Inventors: Stephen Floyd Compton, David Wayne Grams