Patents by Inventor Takasi Ohsawa

Takasi Ohsawa 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 lighting discharge lamp
    Patent number: 6624596
    Abstract: The discharge lamp lighting device according to the present invention is provided with a high-voltage generating transformer which comprises a core, a secondary winding part disposed in a plurality of sections on the outside of the core, and a primary winding part disposed on the outside of the secondary winding part and in which a high-voltage side terminal of said secondary winding part is connected to a terminal of the core and a low-voltage side terminal of the secondary winding part is connected to a terminal of the primary winding part.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: September 23, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takasi Ohsawa, Yoshihisa Kawasaki