Patents by Inventor Katsuzou Sudou

Katsuzou Sudou 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).

  • Sodium secondary battery
    Patent number: 6207321
    Abstract: A sodium secondary battery which assures excellent sealing and can be manufactured in a simple manner is provided. The battery includes a negative electrode chamber defined by the inside of a bottom-closed, hollow cylindrical, solid electrolyte accommodated in an outer case and a positive electrode chamber formed outside the solid electrolyte and containing a porous electrode 4 impregnated with sulfur which serves as a positive electrode active substance. A cover, which closes the opening portion of the outer case, is fastened to the outer case by use of bolts and the interposition of an insulator.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: March 27, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masayuki Fukagawa, Keiichi Iwamoto, Nozomu Kawasetsu, Katsuzou Sudou, Akihiro Sawata