Patents by Inventor Lew W. Cornell

Lew W. Cornell 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 indicator tape
    Patent number: 3935960
    Abstract: An easy opening, hermetically sealed container with a preformed aperture is covered by a tape closure having on its outer surface an indicator layer which changes color when flexed, thereby indicating whether the closure has been handled or tampered with.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: February 3, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Lew W. Cornell