Patents by Inventor Hiroyuki Igehara

Hiroyuki Igehara 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).

  • Silent discharge plasma apparatus
    Patent number: 7922979
    Abstract: A silent discharge plasma apparatus includes a dielectric member, a pair of electrodes opposed to each other across the dielectric member and an alternating-current source applying an alternating-current voltage between the electrodes and causing a discharge. A gas is supplied to a discharge space, where discharge occurs, and a plasma is produced. At least one of the electrodes includes a conductive power feeding thin film on the dielectric member. When the dielectric member is destroyed and an arc discharge develops between the electrodes, the power feeding thin film is eliminated or oxidized, and the arc discharge is stopped.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: April 12, 2011
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noboru Wada, Masaki Kuzumoto, Hajime Nakatani, Hiroyuki Igehara, Norimitsu Esaki, Shingo Mine, Taichiro Tamida
  • SILENT DISCHARGE PLASMA APPARATUS
    Publication number: 20090236042
    Abstract: A silent discharge plasma apparatus includes a dielectric member, a pair of electrodes opposed to each other across the dielectric member and an alternating-current source applying an alternating-current voltage between the electrodes and causing a discharge. A gas is supplied to a discharge space, where discharge occurs, and a plasma is produced. At least one of the electrodes includes a conductive power feeding thin film on the dielectric member. When the dielectric member is destroyed and an arc discharge develops between the electrodes, the power feeding thin film is eliminated or oxidized, and the arc discharge is stopped.
    Type: Application
    Filed: March 16, 2006
    Publication date: September 24, 2009
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Noboru Wada, Masaki Kuzumoto, Hajime Nakatani, Hiroyuki Igehara, Norimitsu Esaki, Shingo Mine, Taichiro Tamida