Patents by Inventor Marcel Jeanjean

Marcel Jeanjean 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).

  • Supply device for a flash tube
    Patent number: 4447766
    Abstract: Supply device for a flash tube comprising a capacitor, a d.c. voltage source connected to the capacitor, an energy switch located between the capacitor and the flash tube, a circuit able to emit a control pulse for the said switch and a preionization circuit for the flash tube, wherein the preionization circuit comprises a second energy switch connected to the capacitor across a variable resistor, as well as to the flash tube, and a second circuit able to emit a control pulse for the second switch, said second pulse being in advance of the first pulse.Application to the optical pumping of lasers.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: May 8, 1984
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Marcel Bedu, Marcel Jeanjean