Patents by Inventor Toyotomo Morita

Toyotomo Morita 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).

  • Luminescent lamp lighting device
    Patent number: 7888887
    Abstract: A luminescent lamp lighting device includes a plurality of switch circuits 3, 4 each connected to each of luminescent lamps 5, 6 in series under one-to-one correspondence, a plurality of optical coupling circuits 9, 10 each connected to each of the switch circuits under one-to-one correspondence to turn on/off the switch circuits and a plurality of current detecting circuits 7, 8 each connected to each of the luminescent lamps in series under one-to-one correspondence to detect currents flowing the luminescent lamps.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: February 15, 2011
    Assignee: Sanken Electric Co., Ltd.
    Inventors: Mizuki Utsuno, Kazushige Hirata, Toru Ashikaga, Toyotomo Morita
  • LUMINESCENT LAMP LIGHTING DEVICE
    Publication number: 20100171433
    Abstract: A luminescent lamp lighting device includes a plurality of switch circuits 3, 4 each connected to each of luminescent lamps 5, 6 in series under one-to-one correspondence, a plurality of optical coupling circuits 9, 10 each connected to each of the switch circuits under one-to-one correspondence to turn on/off the switch circuits and a plurality of current detecting circuits 7, 8 each connected to each of the luminescent lamps in series under one-to-one correspondence to detect currents flowing the luminescent lamps.
    Type: Application
    Filed: March 30, 2006
    Publication date: July 8, 2010
    Applicant: Sanken Electric Co., Ltd.
    Inventors: Mizuki Utsuno, Kazushige Hirata, Toru Ashikaga, Toyotomo Morita