Patents by Inventor Masaharu Kotaka

Masaharu Kotaka 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: 4410837
    Abstract: A device for lighting a discharge lamp such as a xenon short-arc lamp is provided. The device includes a starter comprising a starter energizing capacitor connected to the boost voltage charging capacitor, a thyristor, a high voltage pulse transformer, a discharge gap, a starting capacitor, a diode and a Tesla coil. The starter is actuated with the energy charged in the boost voltage charging capacitor without any special power source therefor. The ignition voltage of the thyristor is higher than the output voltage of the power circuit of the ballast.
    Type: Grant
    Filed: July 28, 1981
    Date of Patent: October 18, 1983
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Shunichi Suzuki, Masaharu Kotaka