Patents by Inventor Aki Yoshida

Aki Yoshida 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).

  • MEMBRANE CATALYST LAYER ASSEMBLY WITH REINFORCING FILMS, MEMBRANE ELECTRODE ASSEMBLY WITH REINFORCING FILMS, AND POLYMER ELECTROLYTE FUEL CELLS
    Publication number: 20130252133
    Abstract: A membrane-catalyst layer assembly with reinforcing films including a solid polymer electrolyte membrane 2, a catalyst layer 3 formed on each surface of the electrolyte membrane 2, and a reinforcing film 4 located on each surface of a membrane-catalyst layer assembly having the electrolyte membrane and the catalyst layers. Each of the reinforcing films 4 has a frame shape with a central opening 41. Each of the catalyst layers 3, except for an outer edge portion 31, is exposed through the opening 41. Each reinforcing film 4 has a first bonding layer 43 bonded to a membrane-catalyst layer assembly 10, and a gas barrier layer 42 formed on the first bonding layer 43 to prevent passage of a fuel gas and an oxidant gas.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 26, 2013
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Aki YOSHIDA, Masashi Hiromitsu
  • Membrane catalyst layer assembly with reinforcing films, membrane electrode assembly with reinforcing films, and polymer electrolyte fuel cells
    Patent number: 8512907
    Abstract: A membrane-catalyst layer assembly with reinforcing films including a solid polymer electrolyte membrane 2, a catalyst layer 3 formed on each surface of the electrolyte membrane 2, and a reinforcing film 4 located on each surface of a membrane-catalyst layer assembly having the electrolyte membrane and the catalyst layers. Each of the reinforcing films 4 has a frame shape with a central opening 41. Each of the catalyst layers 3, except for an outer edge portion 31, is exposed through the opening 41. Each reinforcing film 4 has a first bonding layer 43 bonded to a membrane-catalyst layer assembly 10, and a gas barrier layer 42 formed on the first bonding layer 43 to prevent passage of a fuel gas and an oxidant gas.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: August 20, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Aki Yoshida, Masashi Hiromitsu
  • Membrane catalyst layer assembly with reinforcing films, membrane electrode assembly with reinforcing files, and polymer electrolyte fuel cells
    Publication number: 20090087713
    Abstract: A membrane-catalyst layer assembly with reinforcing films including a solid polymer electrolyte membrane 2, a catalyst layer 3 formed on each surface of the electrolyte membrane 2, and a reinforcing film 4 located on each surface of a membrane-catalyst layer assembly having the electrolyte membrane and the catalyst layers. Each of the reinforcing films 4 has a frame shape with a central opening 41. Each of the catalyst layers 3, except for an outer edge portion 31, is exposed through the opening 41. Each reinforcing film 4 has a first bonding layer 43 bonded to a membrane-catalyst layer assembly 10, and a gas barrier layer 42 formed on the first bonding layer 43 to prevent passage of a fuel gas and an oxidant gas.
    Type: Application
    Filed: September 22, 2008
    Publication date: April 2, 2009
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Aki Yoshida, Masashi Hiromitsu