Patents by Inventor Ryoichi Okuyama

Ryoichi Okuyama 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).

  • Manufacturing method for solid-electrolyte fuel cell
    Patent number: 5290323
    Abstract: This invention relates to a manufacturing method for a solid-electrolyte fuel cell having a three-layer structure and equipped with a fuel-electrode and an air-electrode for its electrodes with a solid-electrolyte sandwiched between them. A mold (4) comprising a material having a property to suck a specified solvent is used. A slurry is made up by mixing a solid-electrolyte powder and an electrode powder to the same solvent as the above specified solvent, and the slurry is poured in turn in the mold to form an electrolyte green body (5) and electrode green bodies (6) and (7). Thereby, a solid-electrolyte fuel cell including no crack and peeling-off in each layer can be obtained easily and inexpensively.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: March 1, 1994
    Assignee: Yuasa Corporation
    Inventors: Ryoichi Okuyama, Eiichi Nomura