Patents by Inventor Kazuko Iwano

Kazuko Iwano 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).

  • Nacreous pigment containing a dye and cosmetic composition comprising the same
    Patent number: 4952245
    Abstract: A nacreous pigment containing a dye comprising a nacreous pigment having an interference color which surface is coated with an insoluble salt of an acid dye and a basic aluminum salt is disclosed. A cosmetic composition comprising said nacreous pigment containing a dye is also disclosed. The nacreous pigment containing a dye has an excellent brightness, a high chroma, a wide variety of color, a high color concentration, and also possesses high safety and excellent stability.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: August 28, 1990
    Assignee: Kao Corporation
    Inventors: Kazuko Iwano, Momoko Suzumeji
  • Single-legged chair
    Patent number: 4930839
    Abstract: A single-legged chair comprising a support post and a seat mounted on the support post at a predetermined position thereof so as to constitute a leg portion by a lower part of the support post below the seat, the general plane of the seat lying at an angle of 70.degree. to 85.degree. with respect to the support post at least when the chair is in use. In use, the seat lies virtually horizontally as the leg portion stands on the ground or floor in an inclined posture.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: June 5, 1990
    Assignee: Soft Energy Co., Ltd.
    Inventors: Osamu Saito, Kazuko Iwano, Yasushi Ikeda
  • Spherical fine particulate pigment and process for preparing the same
    Patent number: 4861379
    Abstract: A spherical fine particulate pigment in which pigment particles have a diameter of not more than 0.5 .mu., and the surface thereof is treated by a surface active agent, is provided by reacting a water soluble dye and an insolubilizing agent therefor in a water-in-oil type emulsion aqueous phase which is prepared by using a nonionic surface active agent. The pigment has an excellent dispersing ability and outstanding tinting strength. It has a wide variety of uses in the field of cosmetics, paints, inks, or the like.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: August 29, 1989
    Assignee: Kao Corporation
    Inventors: Takeo Imai, Kazuko Iwano
  • Viscous water-in-oil type dye or fluorescent brightening agent emulsion and method for the manufacture thereof
    Patent number: 3951598
    Abstract: A viscous water-in-oil type emulsion comprising a dye or a fluorescent brightening agent which is sparingly soluble in water and liquid hydrocarbons, water, a liquid hydrocarbon and a nonionic or amphoteric surface active agent. The emulsion is suitable for dyeing or brightening hydrophobic fibers.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: April 20, 1976
    Assignees: Nippon Kayaku Kabushiki Kaisha, Komatsu Seiren Kabushiki Kaisha
    Inventors: Masahiro Arashi, Kazuko Iwano, Akira Nakamura