Patents by Inventor Cassius E. Sargent

Cassius E. Sargent 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).

  • Bag structure and method of producing
    Patent number: 3998135
    Abstract: A bag structure of the flap type wherein the flap is tack heat-sealed for ready opening by virtue of heat-sealing webs together, wherein the heat-seal overlies a coating substantially resistant to union with thermoplastic material when the latter is in a molten state.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: December 21, 1976
    Assignee: PPC Industries, Inc.
    Inventor: Cassius E. Sargent