Patents by Inventor Francois Kajzar

Francois Kajzar 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).

  • Apparatus and process for measuring non-linear order three optical characteristics in an isotropic phase
    Patent number: 4795255
    Abstract: Apparatus and process for measuring optical, non-linear, harmonic emission characteristics of an isotropic phase: susceptibility coefficient, phase displacement and dispersion. Use is made of a beam converging in a first prism and diverging in a second prism after having been focused in the isotropic phase which it traverses over a distance variable as a function of the aperature angle .alpha..
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: January 3, 1989
    Assignee: Commissariat A L'Energie Atomique
    Inventors: Francois Kajzar, Jean Messier
  • Device for measuring an electrical field by an optical method
    Patent number: 4774406
    Abstract: A device for measuring electric fields mainly comprises a laser and a probe provided with a centrosymmetric polymer sheet permitting the generation, under the action of the field, of the second harmonic of the emitted wavelength. Optical fibers carry the incident and reflected waves of the laser to the probe and then to an optical measuring cascade. This device is of particular interest for measuring the electric fields between high voltage coaxial cables.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: September 27, 1988
    Assignee: Commisariat a l'Energie Atomique
    Inventors: Pierre-Alain Chollet, Francois Kajzar, Jean Messier