Patents by Inventor Jiro Aoshima

Jiro Aoshima 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).

  • Toner for developing static charge images
    Patent number: 5334472
    Abstract: Present invention provides a toner for developing static charge images to the surface of which is adhered powder of aluminum oxide in the amount of 0.01% to 5% by weight. This aluminum oxide has a specific surface area of not less than 80 m.sup.2 /g as measured by BET method, and absorptional CO.sub.2 gas pieces of not more than 4.0 pieces/nm.sup.2.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: August 2, 1994
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Nobuyuki Aoki, Hideo Fujita, Jiro Aoshima