Patents by Inventor Hisamitsu Hatoh

Hisamitsu Hatoh 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-sulfur battery, and a battery system using same
    Patent number: 6329099
    Abstract: A highly reliable sodium-sulfur battery includes a cell container for the positive electrode which is hardly deteriorated by corrosion. The cell container for the positive electrode is assembled by integrating plural members made of a high corrosion resistant alloy containing Cr, or a Co base alloy containing Cr, Ni and Mo, wherein carbide containing at least one of Cr, W and Mo is precipitated, and a readily deformable portion is provided to the cell container for the positive electrode, whereby reliability of the sodium-sulfur battery can be significantly improved.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: December 11, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuo Oyama, Tadahiko Miyoshi, Manabu Madokoro, Hisamitsu Hatoh, Shigeoki Nishimura, Katsuhiko Shiota, Kiyoshi Otaka
  • Sodium-sulfur battery, and a battery system using same
    Patent number: 5962160
    Abstract: A highly reliable sodium-sulfur battery includes a cell container for the positive electrode which is hardly deteriorated by corrosion. The cell container for the positive electrode is made of a Co base alloy containing Cr, Ni, and Mo, wherein carbide containing at least one of Cr, W, and Mo is precipitated, or the cell container for positive electrode is assembled by integrating plural members made of a high corrosion resistance alloy containing Cr by welding, and a readily deformable portion is provided to the cell container for positive electrode, whereby the reliability of the sodium-sulfur battery can be significantly improved.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: October 5, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuo Oyama, Tadahiko Miyoshi, Manabu Madokoro, Hisamitsu Hatoh, Shigeoki Nishimura, Katsuhiko Shiota, Kiyoshi Otaka