Patents by Inventor Michel J. Riboulet

Michel J. Riboulet 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).

  • Process and apparatus for the measurement of the factor of infra-red absorption or emission of materials
    Patent number: 4204120
    Abstract: A method of measuring the absorptivity or emissivity factor of a sample at ambient temperature comprises maintaining a thermopile at a constant temperature substantially above ambient temperature and exposing the sample to radiation exclusively from the thermopile. The voltage across the thermopile is measured and provides a measure of the absorptivity or emissivity factor. The thermopile may be disposed in a temperature-controlled furnace extending into a conical cavity.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: May 20, 1980
    Assignee: Centre National d'Etudes Spatiales
    Inventors: Michel J. Riboulet, Gerard R. Segui