Patents by Inventor Seizi Tomari

Seizi Tomari 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 for electrophotography
    Patent number: 3998747
    Abstract: A negatively charged color toner for electrophotography composed of a polyester resin obtained by the reaction of polyol and dicarboxylic acid components and an organic pigment.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: December 21, 1976
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Yamakami, Kaichi Tsuchiya, Seizi Tomari