Patents by Inventor Frederick R. Middlestadt

Frederick R. Middlestadt 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-evident closure
    Patent number: 7303088
    Abstract: A tamper-evident closure includes a body adapted to mount on a container, a cap, and a hinge coupled to the body and to the cap. A tamper-evident tear strip is coupled to the cap to retain the cap temporarily in a fixed position relative to the body.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: December 4, 2007
    Assignee: Berry Plastics Corporation
    Inventors: Duane Sawyer, Ryan Davidson, Robert C. Weilminster, Frederick R. Middlestadt