Patents by Inventor Fukashi Sakamoto

Fukashi Sakamoto 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).

  • Separator for alkaline cell and alkaline cell prepared by using this separator
    Patent number: 5026617
    Abstract: A separator for an alkaline cell comprising a substrate of a separator and 0.1% to 10% by weight of amorphous ultra fine particles of titanium dioxide and/or hydrated titanium dioxide having a primary particle diameter of a maximum of 500 .ANG. and a specific surface area of a minimum of 100 m.sup.2 /gram. An alkaline cell is also provided which incorporates the separator. The separator results in improved capability to retain electrolytic solution, improved resistivity against alkali and a low amount of residual gas generated during charge. Furthermore, the separator minimizes the electrical resistance, improves the resistivity against oxidation and prevents dendrite occurrence.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: June 25, 1991
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Takemi Kosaka, Fukashi Sakamoto, Setsuo Hidaka