Patents by Inventor Alain Glatigny

Alain Glatigny 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).

  • Identity document difficult to falsify and a process for manufacturing such a document
    Patent number: 4790566
    Abstract: An identity document has graphical information printed on a support and including uncoded alphanumerical information which is specific to a holder of the document or to the document. The surface of the support is broken down into a network of macropixels each having a predetermined average light absorption level. Each of the micropixels in turn consists of a dot pattern matrix of micropixels each having a light absorption level selected among at least two predetermined levels and distributed for the average absorption of each of the macropixels to be said predetermined average light absorption level and for constituting a screen which reproduces on a microscopic scale part at least of the uncoded specific information.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: December 13, 1988
    Assignee: Matra
    Inventors: Alain Boissier, Alain Glatigny