Patents by Inventor Masoyoshi Shimamura

Masoyoshi Shimamura 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).

  • Color toner containing organic pigment and process for producing the same
    Patent number: 5116712
    Abstract: A color toner, comprising a binder resin and a colorant, wherein the colorant comprises organic pigment particles treated with an isocyanic ester or a silicon-containing compound.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: May 26, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Nakamura, Hiromi Mori, Masoyoshi Shimamura, Reiko Morimoto