Patents by Inventor Daniel Langeac

Daniel Langeac 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).

  • Temperature and/or electrical intensity measuring apparatus based on the Faraday effect
    Patent number: 4563639
    Abstract: Apparatus for measuring the temperature and/or electrical intensity based on the Faraday effect. It comprises a probe constituted by an optical fibre, wound in a generally solenoid form and two optical fibre strands connecting the probe to an inlet coupled to a polarized light source and to an outlet coupled to means for measuring the rotation angle of the light polarization plane, the optical fibre portion constituting the probe being twisted about its longitudinal axis in a random single direction. The two optical fibre strands connecting the probe respectively to the inlet and outlet of the system are twisted in opposite directions, the number of twisting turns to the right of one of the strands being equal to the number of twisting turns to the left of the other.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: January 7, 1986
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Daniel Langeac