Patents by Inventor Henri Hougas

Henri Hougas 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).

  • Calibration gage for calibrating a device for reading off eyeglass frame contours, and corresponding calibration method
    Patent number: 5802731
    Abstract: A calibration gage for calibrating a device for reading off the contours of eyeglass frames is designed to be fitted to the contour reading off device to be calibrated in place of an eyeglass frame. It includes a plate with at least two ribs projecting from it. The ribs are generally parallel to each other in a first direction and spaced from each other in a second direction. By reading off the known dimensions between their inside and outside flanks, it is possible to determine some parameters of the contour reading off device.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: September 8, 1998
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Laurent Guillermin, Henri Hougas, Patrick Horel