Patents by Inventor Toshiso Kamai

Toshiso Kamai 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).

  • Patent number: 3973995
    Abstract: A dry cell consists of a metal cylindrical rigid container, an insulative sleeve of synthetic plastic resin, a sleeve of a zinc electrode, a separator sleeve and an internal cake consisting of a depolarizer and an electrolyte. The cake extends upward beyond the edge of the anode and the separator, at its top, contacts the plastic sleeve.
    Type: Grant
    Filed: September 28, 1971
    Date of Patent: August 10, 1976
    Inventor: Toshiso Kamai