Patents by Inventor Denis Poncelet

Denis Poncelet 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).

  • Glass for panoramic roof
    Patent number: 4634231
    Abstract: A glass sheet suitable for use as the panoramic roof of a motor vehicle is disclosed, the sheet being comprised of a tinted glass coated with a network of enamel patterns which reduce the light and energy transmission factor of the formed glass. The glass may optionally include a thin semireflective layer deposited on one side of the glass. Preferably, the light transmission factor and energy transmission factor of the coated glass sheet are approximately equal, and below 30%.
    Type: Grant
    Filed: March 21, 1984
    Date of Patent: January 6, 1987
    Assignee: Saint-Gobain Vitrage
    Inventors: Denis Poncelet, Jean-Claude Coulon, Jacques Chaumette, Pierre Letourneur