Patents by Inventor Satoshi Oowada

Satoshi Oowada 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).

  • Publication number: 20050214632
    Abstract: A membrane electrode assembly comprises a gas diffusion layer for fuel to which fuel is supplied, a catalyst layer for fuel, which includes a catalyst, a electrically conductive material and an electrolyte material, an electrolyte membrane having ionic conductivity, a catalyst layer for oxidants, which includes a catalyst, a electrically conductive material and an electrolyte material, a gas diffusion layer for oxidants to which oxidizer gas is supplied, and these elements are sequentially positioned in that order, wherein the electrolyte material of the catalyst layer for fuel includes a larger amount per unit weight of a hydrocarbon electrolyte than an amount per unit weight of an electrolyte element of the catalyst layer for oxidants, and the electrolyte material of the catalyst layer for oxidants includes a larger amount per unit weight of a fluorocarbon electrolyte than an amount per unit weight of an electrolyte element of the catalyst layer for fuel.
    Type: Application
    Filed: March 16, 2005
    Publication date: September 29, 2005
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masahiro Kida, Satoshi Oowada
  • Publication number: 20040131768
    Abstract: A method for manufacturing a membrane electrode assembly for a solid polymer type fuel cell which includes a process for forming an intermediate lamination layer body by laminating a catalyst electrode layer on an electrolyte membrane including an ion conductivity, and a process for hot pressing for forming the membrane electrode assembly to unify the intermediate lamination layer body and porous gas diffusion layers positioned on both sides on the intermediate lamination layer body in a thickness direction. The intermediate lamination layer body is heat treated by maintaining heating at a temperature range equal to or higher than a glass-transition temperature of the electrolyte polymer included in the catalyst electrode layer and equal to or lower than thermal decomposition temperature before the hot pressing process under a condition that the gas diffusion layers are not laminating on the intermediate lamination layer body.
    Type: Application
    Filed: September 24, 2003
    Publication date: July 8, 2004
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Gang Xie, Satoshi Oowada, Koji Tatematsu, Koji Ueyama