Patents by Inventor David Ellsworth Minesinger

David Ellsworth Minesinger 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).

  • Tamper-proof closure seal
    Patent number: 4009793
    Abstract: Tamper-proof closure seal for containers such as bottles, cans, and the like and methods of tamper-proofing and manufacturing tamper-proof closure seals which preclude inadvertent openings of product containers, readily indicate to prospective consumers that a product container has been opened or tampered with and which yet still enables easy intentional opening of such product containers.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: March 1, 1977
    Assignee: The Procter & Gamble Company
    Inventors: David Ellsworth Minesinger, Thomas Foster Leslie