Patents by Inventor Yoichi Kawano

Yoichi Kawano 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).

  • Separator for fuel cell, process for producing the same, and material therefor
    Publication number: 20030175571
    Abstract: This invention relates to a fuel cell separator of excellent electrical conductivity, gas impermeability and strength. The composition for a fuel cell separator of this invention comprises a resin binder with a viscosity of 0.01-0.5 Pa ·s at 150° C. and a viscosity of 3 Pa·s or more at 25° C. and graphite particles at a weight ratio of 1:(5-15) and a curing accelerator. The resin binder is exemplified by an epoxy resin binder composed of an epoxy resin and a curing agent for the epoxy resin. The process for producing the fuel cell separator of this invention is practiced by kneading and molding the aforementioned composition for a fuel cell separator and curing above the curing temperature of the composition. The fuel cell separator of this invention to be obtained by the aforementioned process shows a bulk density of 1.90 g/cm3 or more, a sheet resistance (areal pressure, 0.
    Type: Application
    Filed: February 6, 2003
    Publication date: September 18, 2003
    Inventors: Yoichi Kawano, Takayuki Kawarada, Hiroshi Ono