Patents by Inventor Piyush Gahalaut

Piyush Gahalaut 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).

  • Electronic ballast with improved inverter startup circuit
    Patent number: 7560874
    Abstract: An electronic ballast (20) for powering at least one gas discharge lamp (30) comprises a self-oscillating half-bridge inverter (200?) having an inverter startup circuit (286,288,290) that does not require a voltage breakdown device, such as a diac. Inverter startup circuit (286,288,290) comprises a first resistor (286), a second resistor (288), and a capacitor (290).
    Type: Grant
    Filed: September 30, 2006
    Date of Patent: July 14, 2009
    Assignee: Osram Sylvania Inc.
    Inventor: Piyush Gahalaut
  • Electronic Ballast with Improved Inverter Startup Circuit
    Publication number: 20080088251
    Abstract: An electronic ballast (20) for powering at least one gas discharge lamp (30) comprises a self-oscillating half-bridge inverter (200?) having an inverter startup circuit (286,288,290) that does not require a voltage breakdown device, such as a diac. Inverter startup circuit (286,288,290) comprises a first resistor (286), a second resistor (288), and a capacitor (290).
    Type: Application
    Filed: September 30, 2006
    Publication date: April 17, 2008
    Applicant: OSRAM SYLVANIA, INC.
    Inventor: Piyush Gahalaut