Patents by Inventor Takamichi Hirosawa

Takamichi Hirosawa 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).

  • Hydrogen storage alloy electrode and manufacturing method of the same
    Patent number: 5902700
    Abstract: A hydrogen storage alloy electrode for use in electrochemical hydrogen storage cells, the electrode being in the form of a negative electrode fabricated by sintering a mixture of a hydrogen storage alloy containing manganese and an alloy containing a measured amount of manganese.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: May 11, 1999
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Takamichi Hirosawa, Takaaki Ikemachi
  • Hydrogen storage alloy electrode and manufacturing method of the same
    Patent number: 5766792
    Abstract: A hydrogen storage alloy electrode for use in electro-chemical hydrogen storage cells, the electrode being in the form of a negative electrode fabricated by sintering a mixture of a hydrogen storage alloy containing manganese and an alloy containing a measured amount of manganese.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: June 16, 1998
    Assignee: Sanyo Electric, Co., Ltd.
    Inventors: Takamichi Hirosawa, Takaaki Ikemachi