Patents by Inventor Marianne Michelle Anton

Marianne Michelle Anton 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).

  • Security device
    Patent number: 6712399
    Abstract: A security device comprises an optically variable effect generating structure (3,4). An obscuring layer (7) is located, in use, between the optically variable effect generating structure and a substrate (8) to which the device is secured. A color layer (6) is also included which exhibits one or more predetermined colors when viewed under certain viewing conditions from the side of the device remote from the obscuring layer. The obscuring layer (7) is substantially opaque under the said certain viewing conditions.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: March 30, 2004
    Assignee: De la Rue International Limited
    Inventors: Kenneth John Drinkwater, Marianne Michelle Anton, Ralph Kay