Patents by Inventor Mitsuharu CHISAKA

Mitsuharu CHISAKA 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 FOR FUEL CELLS, ELECTRODE CATALYST LAYER, MEMBRANE ELECTRODE JOINED BODY, SOLID POLYMER TYPE FUEL CELL, METHOD FOR PRODUCING TITANIUM OXIDE FOR CATALYST CARRIERS, AND METHOD FOR PRODUCING CATALYST FOR FUEL CELLS
    Publication number: 20230130095
    Abstract: The present disclosure provides a fibrous rutile-type oxide that contains an oxygen atom, a nitrogen atom, and a transition metal atom. The transition metal atom is at least one atom selected from the group consisting of a titanium atom, a tantalum atom, a niobium atom, and a zirconium atom. The rutile-type oxide is represented by the chemical formula MOxNy, where M represents the transition metal atom. In the chemical formula, x satisfies x = 2 - (y +j) (j ? 0).
    Type: Application
    Filed: December 21, 2022
    Publication date: April 27, 2023
    Inventors: Mitsuharu CHISAKA, Yutaka SUZUKI, Hiroyuki MORIOKA, Madoka OZAWA
  • Catalyst for fuel cells, membrane electrode assembly, and polymer electrolyte fuel cell
    Patent number: 11349131
    Abstract: Provided is a catalyst for fuel cells including an oxygen atom, a nitrogen atom, a pentavalent phosphorus atom, and a transition metal atom, in which when the transition metal atom is represented by M, the catalyst for fuel cells is represented by a chemical formula MOxNyPz, and the transition metal atom is at least one selected from the group consisting of a titanium atom, a tantalum atom, a niobium atom, and a zirconium atom.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: May 31, 2022
    Assignees: TOPPAN PRINTING CO., LTD., HIROSAKI UNIVERSITY
    Inventors: Hiroyuki Morioka, Madoka Ozawa, Mitsuharu Chisaka
  • FUEL CELL CATALYST
    Publication number: 20210135247
    Abstract: Provided is a catalyst for fuel cells including an oxygen atom, a nitrogen atom, a pentavalent phosphorus atom, and a transition metal atom, in which when the transition metal atom is represented by M, the catalyst for fuel cells is represented by a chemical formula MOxNyPz, and the transition metal atom is at least one selected from the group consisting of a titanium atom, a tantalum atom, a niobium atom, and a zirconium atom.
    Type: Application
    Filed: October 28, 2020
    Publication date: May 6, 2021
    Inventors: Hiroyuki MORIOKA, Madoka OZAWA, Mitsuharu CHISAKA