Patents by Inventor Masayuki Sonoda

Masayuki Sonoda 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).

  • Drive circuit of switch and relay circuit
    Patent number: 7130177
    Abstract: A drive circuit and relay circuit using this drive circuit are provided, the drive circuit including: a first terminal connected to a drive electrode located at one side of a mechanical switch contact driven by static electricity; a second terminal connected to a drive electrode located at the other side of the switch contact; a photoelectromotive force element connected to the first terminal and the second terminal, optically coupled to a light emitting element, and including at least two photodiode arrays which are serially connected; and an electronic inductor circuit (bypass circuit) connected in parallel with at least one of the photodiode arrays in the photoelectromotive force element.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: October 31, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Aizawa, Masayuki Sonoda
  • Drive circuit of switch and relay circuit
    Publication number: 20050168793
    Abstract: A drive circuit and relay circuit using this drive circuit are provided, the drive circuit including: a first terminal connected to a drive electrode located at one side of a mechanical switch contact driven by static electricity; a second terminal connected to a drive electrode located at the other side of the switch contact; a photoelectromotive force element connected to the first terminal and the second terminal, optically coupled to a light emitting element, and including at least two photodiode arrays which are serially connected; and an electronic inductor circuit (bypass circuit) connected in parallel with at least one of the photodiode arrays in the photoelectromotive force element.
    Type: Application
    Filed: December 8, 2004
    Publication date: August 4, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Aizawa, Masayuki Sonoda