Patents by Inventor Yoshiaki Haramoto

Yoshiaki Haramoto 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).

  • Ionized gas detector and ionized gas detecting method
    Patent number: 9645113
    Abstract: An ionized gas detector includes at least a pair of ion detecting electrodes that detect ions of the ionized measuring-subject gas, an electrode-voltage applying unit that applies a given voltage to the ion detecting electrodes, the electrode-voltage applying unit being configured to be capable of reversing its voltage polarity, a charge amplifier circuit having a charge capacitor that accumulates electric charges generated by voltage application by the electrode-voltage applying unit, an ion current calculating unit that calculates the value of an ion current of ions of the measuring-subject gas, based on a time-dependent change of the volume of electric charges accumulated in the charge capacitor of the charge amplifier circuit, and a concentration determining unit that determines the concentration of the measuring-subject gas, based on an ion current value calculated by the ion current calculating unit.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 9, 2017
    Assignee: TOKYO METROPOLITAN INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yoshiaki Haramoto, Yasuyuki Hirano, Hiromichi Yoshida
  • IONIZED GAS DETECTOR AND IONIZED GAS DETECTING METHOD
    Publication number: 20140266231
    Abstract: An ionized gas detector includes at least a pair of ion detecting electrodes that detect ions of the ionized measuring-subject gas, an electrode-voltage applying unit that applies a given voltage to the ion detecting electrodes, the electrode-voltage applying unit being configured to be capable of reversing its voltage polarity, a charge amplifier circuit having a charge capacitor that accumulates electric charges generated by voltage application by the electrode-voltage applying unit, an ion current calculating unit that calculates the value of an ion current of ions of the measuring-subject gas, based on a time-dependent change of the volume of electric charges accumulated in the charge capacitor of the charge amplifier circuit, and a concentration determining unit that determines the concentration of the measuring-subject gas, based on an ion current value calculated by the ion current calculating unit.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: TOKYO METROPOLITAN INDUSTRIES TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yoshiaki Haramoto, Yasuyuki Hirano, Hiromichi Yoshida