Patents by Inventor Junzo Yamao

Junzo Yamao 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).

  • Storage battery, separator therefor and method of formation
    Patent number: 4153759
    Abstract: The present invention relates to a high performance lead-acid storage battery having a special microporous separator between a positive and a negative plate in a cell of the battery. The separator is comprised of a microporous embossed thin sheet having many small projecting embossed parts which provides unique characteristics in a cell including low electric internal resistance in the cell, sufficient electrolyte between the plates in the cell and sufficient elasticity of the separator to prevent active material shedding, thereby giving a high performance at a high rate of discharge and long life.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: May 8, 1979
    Assignee: Yuasa Battery Company Limited
    Inventors: Kazuo Murata, Shiro Tanso, Junzo Yamao
  • Storage battery, separator therefor
    Patent number: 4072802
    Abstract: The present invention relates to a high performance lead-acid storage battery having a special microporous separator between a positive and a negative plate in a cell of the battery. The separator is comprised of a microporous embossed thin sheet having many small projecting embossed parts which provides unique characteristics in a cell including low electric internal resistance in the cell, sufficient electrolyte between the plates in the cell and sufficient elasticity of the separator to prevent active material shedding, thereby giving a high performance at a high rate of discharge and long life.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: February 7, 1978
    Assignee: Yuasa Battery Company Limited
    Inventors: Kazuo Murata, Shiro Tanso, Junzo Yamao