Patents by Inventor Toyoaki Suenaga

Toyoaki Suenaga 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).

  • Power supply apparatus for generating plasma
    Patent number: 6777881
    Abstract: A power supply apparatus for generating a plasma for supplying a high-frequency power to a plasma generating device which is a load. The power supply apparatus comprises: a DC power supply; a power conversion circuit which comprises an amplifier circuit of D-class comprising a plurality of switching elements, and which converts a DC power output of the DC power supply to a high-frequency power to output; and a load impedance conversion circuit which converts a load impedance to a predetermined delayed load, wherein the power supply apparatus is adapted to supply the high-frequency power output from the power conversion circuit to a plasma generating device through the load impedance conversion circuit.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: August 17, 2004
    Assignee: Kyosan Electric Mfg. Co., Ltd.
    Inventors: Itsuo Yuzurihara, Masahiro Kikuchi, Toyoaki Suenaga, Yoichi Ishikawa
  • Power supply apparatus for generating plasma
    Publication number: 20040032212
    Abstract: A power supply apparatus for generating a plasma for supplying a high-frequency power to a plasma generating device which is a load. The power supply apparatus comprises: a DC power supply; a power conversion circuit which comprises an amplifier circuit of D-class comprising a plurality of switching elements, and which converts a DC power output of the DC power supply to a high-frequency power to output; and a load impedance conversion circuit which converts a load impedance to a predetermined delayed load, wherein the power supply apparatus is adapted to supply the high-frequency power output from the power conversion circuit to a plasma generating device through the load impedance conversion circuit.
    Type: Application
    Filed: November 13, 2002
    Publication date: February 19, 2004
    Applicant: Kyosan Electric Mfg. Co., Ltd.
    Inventors: Itsuo Yuzurihara, Masahiro Kikuchi, Toyoaki Suenaga, Yoichi Ishikawa