Patents by Inventor Robert McDonald Gillies

Robert McDonald Gillies 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 closures
    Patent number: 6564958
    Abstract: A snap-on or screw type, tamper evident closure having first and second relatively moveable plastic parts (16, 18) which move from an initial position to a new limiting position when the closure is first opened, the new limiting position being visually distinguishable from the initial position to provide the tamper evidence. The two plastics parts are formed in mutually intimate association but have inter-engaging complimentary formations (22, 28, 40, 42) which become irreversibly disengaged on first opening of the closure.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: May 20, 2003
    Assignee: Crown Cork & Seal Technologies Corporation
    Inventors: Christopher Paul Ramsey, Philippe Odet, Michael Barrie Simpson, Peter Frank Woodward, Donald E Griffiths, Robert McDonald Gillies