Patents by Inventor Youichirou YOSHII

Youichirou YOSHII 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).

  • Fuel cell vehicle coolant having improved storage stability and method for producing the same
    Patent number: 9929416
    Abstract: There are provided a stock solution composition for fuel cell vehicle coolant used by dilution with a diluent comprising water and a method for producing the same, and further a fuel cell vehicle coolant composition having improved storage stability and a method for producing the same. The present invention relates to a method for producing a stock solution composition for fuel cell vehicle coolant, wherein the stock solution composition comprises at least one ethylene glycol compound selected from the group consisting of ethylene glycol, diethylene glycol, and triethylene glycol, and is used by dilution with a diluent comprising water, and the method comprises the following steps: (a) a step of selecting as a raw material an ethylene glycol compound having an ethylene glycol monoformate content of 60 ppm or less; or (b) a step of selecting as a raw material an ethylene glycol compound, wherein a 50% by mass aqueous solution of the ethylene glycol compound has a conductivity of 4.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichiro Sugiyama, Kazuhiro Miyajima, Youichirou Yoshii, Nobukazu Takagi, Tomoyuki Nakano, Takumi Otsubo
  • FUEL CELL VEHICLE COOLANT HAVING IMPROVED STORAGE STABILITY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20160141646
    Abstract: There are provided a stock solution composition for fuel cell vehicle coolant used by dilution with a diluent comprising water and a method for producing the same, and further a fuel cell vehicle coolant composition having improved storage stability and a method for producing the same. The present invention relates to a method for producing a stock solution composition for fuel cell vehicle coolant, wherein the stock solution composition comprises at least one ethylene glycol compound selected from the group consisting of ethylene glycol, diethylene glycol, and triethylene glycol, and is used by dilution with a diluent comprising water, and the method comprises the following steps: (a) a step of selecting as a raw material an ethylene glycol compound having an ethylene glycol monoformate content of 60 ppm or less; or (b) a step of selecting as a raw material an ethylene glycol compound, wherein a 50% by mass aqueous solution of the ethylene glycol compound has a conductivity of 4.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 19, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichiro SUGIYAMA, Kazuhiro MIYAJIMA, Youichirou YOSHII, Nobukazu TAKAGI, Tomoyuki NAKANO, Takumi OTSUBO