Patents by Inventor Tom F. Blanchester

Tom F. Blanchester 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).

  • Method and control device for document authentication
    Patent number: 6141438
    Abstract: A document authentication control device has a card positioning device with a document insertion region, an optical scanner, a data processor that receives data from the optical scanner, a database for storing processed optical image data, and a display screen for displaying document, authentication, and other data. The data processor correlates an image region of a document and a reference region of the document to corresponding image and reference regions of the document retrieved from the database, thereby determining the authenticity of the document. The reference region is a region of the document that is spaced away from the image region of the document.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: October 31, 2000
    Inventor: Tom F. Blanchester