Patents by Inventor Aboubekr Boutaleb

Aboubekr Boutaleb 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).

  • Indentification of articles using liquid crystal identity cards
    Patent number: 4536014
    Abstract: An identification article, especially an identity document, has a marked element (8), e.g. a photograph covered by a mask (2) which is normally opaque but which, upon application of a suitable electric field changes to an at least translucent state. Preferably the mask (2) complies a liquid crystal layer (16) sandwiched between two plates (5 and 7) of which one plate is at least translucent.
    Type: Grant
    Filed: August 24, 1982
    Date of Patent: August 20, 1985
    Assignee: Securicard Systems Limited
    Inventors: Lucy A. Boutaleb, Aboubekr Boutaleb, Tibor T. Kerekess