Patents by Inventor Michael J. Van Demark

Michael J. Van Demark 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 markers for reducing receipt fraud
    Patent number: 7501646
    Abstract: A method of reducing receipt fraud comprises attempting to detect emission from a receipt associated with one or more luminescent markers that are incorporated in a valid receipt. The receipt is validated when the attempt is successful.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: March 10, 2009
    Assignee: NCR Corporation
    Inventors: Gary A. Ross, Michael J. Van Demark, Simon J. McCouaig