Patents by Inventor Isao Ehama

Isao Ehama 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).

  • GAS DIFFUSION LAYER FOR FUEL CELL
    Publication number: 20120034548
    Abstract: To provide a means of further improving the cell's start-up capability (below-freezing-point-start-up capability) in a low temperature environment in the gas diffusion layer used in the fuel cell. It is a gas diffusion layer for fuel cell having a pore volume of micropores of 2.0×10?4 cm3/cm2 or higher.
    Type: Application
    Filed: April 27, 2010
    Publication date: February 9, 2012
    Inventors: Yozo Okuyama, Manabu Sugino, Takanori Oku, Isao Ehama, Kazufumi Kodama, Hiroshi Kato, Haruo Nomi, Takafumi Namba, Tomoyuki Takane