Patents by Inventor Francesco Celso

Francesco Celso 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).

  • Patent number: 6191537
    Abstract: A solid state igniter device for hot restrike of discharge lamps with an associated supply circuit. The ignitor device comprises a primary circuit with at least one solid state switch element controlled to switch to induce in the primary circuit a controlled oscillation phenomenon at a frequency greater than a megahertz and a secondary circuit including a resonant circuit with a high quality factor Q (at least 100), capable of resonating and producing a pulse signal for striking the discharge of the lamp, controlled through the controlled oscillation phenomenon produced in the primary circuit. A control unit acting on the switch element controls the oscillation phenomenon in a pulse mode as a function of the characteristics of the lamp and the power supply, wherein the control unit induces the controlled oscillation phenomenon for a predetermined time duration a programmable number of times in a predetermined time interval.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: February 20, 2001
    Assignee: Quality Light Electronics S.A.S.
    Inventor: Francesco Celso