Patents by Inventor Michel Duchet

Michel Duchet 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 measuring a component of wind speed
    Patent number: 4182570
    Abstract: A laser generator (1,2,3) is arranged to generate successive pairs of pulses. Two light receivers (10,11) in the vicinity of the laser generator receive echos of the pulses as reflected from a target and a processing circuit (15) calculates the component of wind speed blowing across the laser axis between the laser generator and the target. The device can be combined with laser ranging means and used for artillery control.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: January 8, 1980
    Assignees: Compagnie Industrielle des Lasers, Compagnie Generale d'Electricite, Societe d'Optique, Precision Electronique et Mecanique" Sopelem
    Inventors: Gilbert Courrier, Michel Duchet, Michele Leblanc, Jacques Moirez
  • Device for blocking a laser beam
    Patent number: 4003631
    Abstract: Device for blocking a laser return pulse reflected by a target lit up by an incident high power pulse. It comprises a semiconductive plate on the path of the incident and reflected pulses and means, for generating charge carriers in this semiconductive plate after the crossing by the incident pulse, in order to make it opaque for the reflected pulse and thus to avoid damaging of the laser pulse generator.
    Type: Grant
    Filed: June 5, 1975
    Date of Patent: January 18, 1977
    Assignee: Compagnie Generale d'Electricite
    Inventors: Jean-Pierre Biet, Michel Duchet
  • Optical device
    Patent number: 3989360
    Abstract: Optical device comprising two optical elements made of germanium arranged parallel to each other and intended to have a high-power CO.sub.2 laser beam crossing through them; helium at low temperature flows between the two optical elements and a dry nitrogen flux is directed towards at least one of the input and output faces of the device.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: November 2, 1976
    Assignee: Compagnie Generale d'Electricite
    Inventor: Michel Duchet
  • Electron beam generator and gas laser head in combination therewith
    Patent number: 3972009
    Abstract: Electron beam generator and the applying of such a generator to a gas laser head comprising, more particularly, an anode and a cathode arranged in an enclosure under low pressure; it comprises, moreover, a device for lighting up the cathode by ultra-violet radiation. The generator can be applied to the ionizing of the gaseous mixture of a gas laser generator.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: July 27, 1976
    Assignee: Compagnie Generale d'Electricite
    Inventor: Michel Duchet