Patents by Inventor Gerard Gillet

Gerard Gillet 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).

  • Device for calibrating an apparatus for measuring the formation index of a sheet of paper
    Patent number: 4931659
    Abstract: A device for calibrating an apparatus for measuring the formation index of a sheet of paper in which an emitted light beam is directed through the sheet of paper and detected and electronically processed into a modulated output signal. The device has a frosted glass for diffusing the measuring beam of light and an opaque rod mounted for rotation in and out of the beam of light so as to provide a modulation of the detected light of a known amount which can then be used to calibrate the measuring apparatus by adjusting the various parameters of the apparatus to yield the desired known output modulation.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: June 5, 1990
    Assignee: Centre Tech. de L'Industie des Papiers cartons etc.
    Inventors: Jacques Sabater, Gerard Gillet