Patents by Inventor Kaoru Kajino

Kaoru Kajino 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).

  • Process for producing binder resin for toners for developing electrostatic images
    Patent number: 6168896
    Abstract: A process for producing a binder resin for toners for developing electrostatic images, characterized by involving the step of stirring and thereby mixing a resin solution and an emulsified resin dispersion, and simultaneously or thereafter removing water and the solvent to give a solvent-free resin mixture composition.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: January 2, 2001
    Assignee: Nippon Carbide Kogyo Kabushiki Kaisha
    Inventors: Sonoo Matsuoka, Kaoru Kajino, Takashi Terabayashi, Hiroshi Serizawa
  • Process for producing binder resin for toner
    Patent number: 6074796
    Abstract: A process for producing a binder resin for a toner comprising the steps of (1) mixing a substantially solventless resin (A) and an emulsion of a resin (B) different from resin (A) with stirring and (2) evaporating water from the mixture of resin (A) and the emulsion of resin (B) simultaneously with or after the step (1) to obtain a substantially solventless resin composition.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: June 13, 2000
    Assignee: Nippon Carbide Kogyo Kabushiki Kaisha
    Inventors: Sonoo Matsuoka, Kaoru Kajino, Takashi Terabayashi, Hiroshi Serizawa