Patents by Inventor Yoichi Okada

Yoichi Okada 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).

  • Publication number: 20240387843
    Abstract: An ion analysis device includes a sampling unit configured to sample condensate of exhaust gas flowing through an exhaust gas line in a fuel cell; and a sensor unit configured to measure an ion concentration of the condensate, in which the sampling unit is configured to sample the condensate of the exhaust gas from a first reservoir that is provided to the exhaust gas line and where the condensate of the exhaust gas is collected, or to sample the exhaust gas from the exhaust gas line and to collect condensate of the sampled exhaust gas in a second reservoir.
    Type: Application
    Filed: June 2, 2022
    Publication date: November 21, 2024
    Applicants: HORIBA, LTD., HORIBA ADVANCED TECHNO, CO., LTD.
    Inventors: Yoichi OKADA, Yoshinori TANAKA, Kohei SASAI, Shunta WATANABE, Kazuhiro MIYAMURA
  • Publication number: 20240145744
    Abstract: The present invention is a fuel cell evaluation system that obtains an actual gas consumption amount in a fuel cell in real time with accuracy and calculates a consumption amount of a fuel gas in the fuel cell, the fuel cell evaluation system including: a fuel gas supply path that supplies a fuel gas of a first flow rate to the fuel cell; a fuel gas discharge path that discharges the fuel gas from the fuel cell; an inert gas introduction path that introduces an inert gas of a second flow rate into the fuel gas discharge path or the fuel gas supply path; a first fuel gas concentration meter that measures a fuel gas concentration in a mixed gas of the fuel gas and the inert gas flowing through the fuel gas discharge path; and a fuel gas consumption amount calculation unit that calculates the consumption amount of the fuel gas in the fuel cell based on the first flow rate, the second flow rate, and the fuel gas concentration measured by the first fuel gas concentration meter.
    Type: Application
    Filed: March 14, 2022
    Publication date: May 2, 2024
    Applicant: HORIBA, LTD.
    Inventors: Yoichi OKADA, Yoshinori TANAKA, Kohei SASAI, Shunta WATANABE
  • Publication number: 20070008744
    Abstract: In the DC/DC converter, a switching part has first and second switches serially connected from a power supply to a ground. The first and second switches switch on/off in response to first and second switching signals having a fixed frequency. The first switching signal has a phase level that does not overlap a corresponding phase level of the second switching signal. A transformer transforms a voltage applied to a first winding into a second winding in response to switching operation of the switching part, and resonates by an inductor and a capacitor of the first winding. Also, a rectifier includes a rectifying diode for rectifying the voltage from the transformer into a direct voltage. A feedback circuit detects the voltage outputted via the rectifier. Additionally, a controller controls pulse width of the first and second switching signals in a PWM mode according to the voltage detected by the feedback circuit.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 11, 2007
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: TAE WON HEO, DONG KYUN RYU, YOICHI OKADA, KIYOKAZU NAGAHARA
  • Patent number: 6484392
    Abstract: A process of weaaving metal conductor wires to form a metal woven shielding conductor layer over the outer surface of an insulated cable. The insulated cable is accompanied with at least one solder or tin wire. When the at least one solder or tin wire is immersed in a molten metal plating solution, it melts down hence generating a spatial margin between the insulated cable and the metal woven shielding conductor layer. This prevents the insulated cable from biting with its outer surface into the metal woven shielding conductor layer when it is thermally expanded in the molten metal plating solution. As the metal woven shielding conductor layer is impregnated deeply with the molten metal, there are hardly any generated gaps and undulation on the surface of the metal plating layer. Accordingly the suppression of reflection and attenuation of a transmission signal will be improved.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: November 26, 2002
    Assignee: Totoku Electric Co., Ltd.
    Inventors: Yoichi Okada, Yasushi Ooshima
  • Patent number: 5761055
    Abstract: In a driving pulse output limiting circuit, ideal switching operations are performed in all oscillation permitting frequencies and in all impedance conditions free from excessive surge current stresses due to excessive driving pulse width. While a charging current or a discharging current is being supplied to a capacity 11 which is connected between both ends of a switching element 3 or between windings of a main transformer 7, voltages are generated between both ends of a switching element 2 and between both ends of the switching element 3.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: June 2, 1998
    Assignees: Sony Corpration, Shindengen Electric Manufacturing Co., Ltd.
    Inventors: Yoichi Okada, Kenji Kawasaki, Haruo Watanabe, Takeshi Karii, Kenji Horiguchi, Yoshinori Kobayashi