Patents by Inventor Walter Schaube

Walter Schaube 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).

  • Method for determining the condition of a roadway surface
    Patent number: 5218206
    Abstract: The condition of the roadway with respect to dryness, wetness, or icing is determined, contact-free by way of reflection measurements of light in the infrared range. The reflected light is measured selectively and simultaneously by a receiver in at least two wavelength regions with the wavelength ranges to be determined being in spectral dependence from the surface condition. Formation of a quotient of the detected signals makes possible an unequivocal statement regarding the respective condition of the roadway surface.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: June 8, 1993
    Assignee: TZN Forschungz- und Entwicklungszentrum Unterluss GmbH
    Inventors: Klemens Schmitt, Walter Schaube