Patents by Inventor Tsukuru OHWAKI

Tsukuru OHWAKI 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).

  • Catalyst particle, and electrode catalyst, electrolyte membrane-electrode assembly, and fuel cell using the same
    Patent number: 10847811
    Abstract: An object is to provide a catalyst particle that can exhibit high activity. The catalyst particle is an alloy particle formed of platinum atom and a non-platinum metal atom, wherein (i) the alloy particle has an L12 structure as an internal structure and has an extent of ordering of L12 structure in the range of 30 to 100%, (ii) the alloy particle has an LP ratio calculated by CO stripping method of 10% or more, and (iii) the alloy particle has a dN/dA ratio in the range of 0.4 to 1.0.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: November 24, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki Arihara, Hiroyuki Tanaka, Hisashi Mitsumoto, Takahiro Kaito, Seiho Sugawara, Tsukuru Ohwaki
  • CATALYST PARTICLE, AND ELECTRODE CATALYST, ELECTROLYTE MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL USING THE SAME
    Publication number: 20180277856
    Abstract: An object is to provide a catalyst particle that can exhibit high activity. The catalyst particle is an alloy particle formed of platinum atom and a non-platinum metal atom, wherein (i) the alloy particle has an L12 structure as an internal structure and has an extent of ordering of L12 structure in the range of 30 to 100%, (ii) the alloy particle has an LP ratio calculated by CO stripping method of 10% or more, and (iii) the alloy particle has a dN/dA ratio in the range of 0.4 to 1.0.
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki Arihara, Hiroyuki Tanaka, Hisashi Mitsumoto, Takahiro Kaito, Seiho Sugawara, Tsukuru Ohwaki
  • Catalyst particle, and electrode catalyst, electrolyte membrane-electrode assembly, and fuel cell using the same
    Patent number: 10014532
    Abstract: An object is to provide a catalyst particle that can exhibit high activity. The catalyst particle is an alloy particle formed of platinum atom and a non-platinum metal atom, wherein (i) the alloy particle has an L12 structure as an internal structure and has an extent of ordering of L12 structure in the range of 30 to 100%, (ii) the alloy particle has an LP ratio calculated by CO stripping method of 10% or more, and (iii) the alloy particle has a dN/dA ratio in the range of 0.4 to 1.0.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 3, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki Arihara, Hiroyuki Tanaka, Hisashi Mitsumoto, Takahiro Kaito, Seiho Sugawara, Tsukuru Ohwaki
  • CATALYST PARTICLE, AND ELECTRODE CATALYST, ELECTROLYTE MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL USING THE SAME
    Publication number: 20160197358
    Abstract: An object is to provide a catalyst particle that can exhibit high activity. The catalyst particle is an alloy particle formed of platinum atom and a non-platinum metal atom, wherein (i) the alloy particle has an L12 structure as an internal structure and has an extent of ordering of L12 structure in the range of 30 to 100%, (ii) the alloy particle has an LP ratio calculated by CO stripping method of 10% or more, and (iii) the alloy particle has a dN/dA ratio in the range of 0.4 to 1.0.
    Type: Application
    Filed: August 6, 2014
    Publication date: July 7, 2016
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki ARIHARA, Hiroyuki TANAKA, Hisashi MITSUMOTO, Takahiro KAITO, Seiho SUGAWARA, Tsukuru OHWAKI