Patents by Inventor Yasuo Kizu

Yasuo Kizu 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).

  • Liquid developer for use in electrostatic photography comprising natural resins and natural resin-modified thermosetting resins combined with polymers
    Patent number: 4104183
    Abstract: A liquid developer for use in electrostatic photography which comprises at least one kind of resin which is substantially insoluble in a carrier liquid consisting of a non-aqueous solvent with high insulating property and low dielectric constant, a polymer consisting essentially of at least one kind of monomer which can dissolve said resin and a coloring agent, each component being contained in said carrier liquid, is excellent in dispersion stability, fixability and redispersibility so that it is suitable for use in offset printing and various transfers as well.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: August 1, 1978
    Assignee: Ricoh Co., Ltd.
    Inventors: Kazuo Tsubuko, Yasuo Kizu