Patents Assigned to Sumida Technologies Inc.
  • High-voltage transformer and discharge lamp driving apparatus
    Patent number: 6919693
    Abstract: A high-voltage transformer for lighting a plurality of discharge lamps has a primary coil for inputting an AC voltage and a secondary coil for outputting a predetermined AC voltage higher than the AC voltage inputted. The primary coil has a starter primary winding for initially lighting the discharge lamps, and a normal lighting primary winding for normally lighting the discharge lamps.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: July 19, 2005
    Assignees: Sumida Technologies Inc., Sumida Corporation
    Inventor: Tadayuki Fushimi