Patents by Inventor Takeaki SAITOU

Takeaki SAITOU 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).

  • Method of manufacturing membrane electrode assembly, and membrane electrode assembly
    Patent number: 10547058
    Abstract: There is provided a method of manufacturing a membrane electrode assembly that has an electrode catalyst layer formed on a surface of an electrolyte membrane. The electrode catalyst layer formed in the membrane electrode assembly is produced by a drying process that dries a catalyst ink which includes catalyst-supported particles having a catalyst metal supported thereon, a solvent and an ionomer, at a predetermined temperature. The catalyst ink includes a plurality of different solvents having different boiling points. The predetermined temperature is set to be lower than the boiling point of the solvent having the lowest boiling point among the plurality of different solvents.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: January 28, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tsubosaka, Hiroo Yoshikawa, Tsunemasa Nishida, Nobuaki Mizutani, Takeaki Saitou, Junji Nakanishi, Masato Hamano
  • Method of manufacturing membrane electrode assembly
    Patent number: 9991538
    Abstract: The method of manufacturing a membrane electrode assembly that has an electrode catalyst layer formed on a surface of an electrolyte membrane comprises (a) producing an electrode catalyst layer by drying a catalyst ink that includes catalyst-supported particles having a catalyst metal supported thereon, a solvent and an ionomer; and (b) selecting a produced electrode catalyst layer that contains an amount of sulfate ion equal to or less than a specified reference value, and manufacturing the membrane electrode assembly by using the selected electrode catalyst layer.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: June 5, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Tsubosaka, Hiroo Yoshikawa, Tsunemasa Nishida, Nobuaki Mizutani, Takeaki Saitou, Junji Nakanishi, Masato Hamano
  • METHOD OF MANUFACTURING MEMBRANE ELECTRODE ASSEMBLY
    Publication number: 20160133946
    Abstract: The method of manufacturing a membrane electrode assembly that has an electrode catalyst layer formed on a surface of an electrolyte membrane comprises (a) producing an electrode catalyst layer by drying a catalyst ink that includes catalyst-supported particles having a catalyst metal supported thereon, a solvent and an ionomer; and (b) selecting a produced electrode catalyst layer that contains an amount of sulfate ion equal to or less than a specified reference value, and manufacturing the membrane electrode assembly by using the selected electrode catalyst layer.
    Type: Application
    Filed: October 22, 2015
    Publication date: May 12, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji TSUBOSAKA, Hiroo YOSHIKAWA, Tsunemasa NISHIDA, Nobuaki MIZUTANI, Takeaki SAITOU, Junji NAKANISHI, Masato HAMANO
  • Method of Manufacturing Membrane Electrode Assembly, and Membrane Electrode Assembly
    Publication number: 20160133945
    Abstract: There is provided a method of manufacturing a membrane electrode assembly that has an electrode catalyst layer formed on a surface of an electrolyte membrane. The electrode catalyst layer formed in the membrane electrode assembly is produced by a drying process that dries a catalyst ink which includes catalyst-supported particles having a catalyst metal supported thereon, a solvent and an ionomer, at a predetermined temperature. The catalyst ink includes a plurality of different solvents having different boiling points. The predetermined temperature is set to be lower than the boiling point of the solvent having the lowest boiling point among the plurality of different solvents.
    Type: Application
    Filed: October 14, 2015
    Publication date: May 12, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji TSUBOSAKA, Hiroo YOSHIKAWA, Tsunemasa NISHIDA, Nobuaki MIZUTANI, Takeaki SAITOU, Junji NAKANISHI, Masato HAMANO