Patents by Inventor Takyua Uemura

Takyua Uemura 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).

  • Colored metallic pigment, method for the production of same and products containing same
    Patent number: 5037475
    Abstract: A colored metallic pigment comprising a metallic pigment, a coloring pigment, and a thermally polymerized carboxylic acid having at least one double bond and at least two carboxylic groups prepared by the thermal polymerization of at least one double bond-containing carboxylic acid, the coloring pigment being chemically adsorbed on the surface of the metallic pigment via the thermally polymerized carboxylic acid. The colored metallic pigment may be coated with a polymer composed of a radical polymerizable unsaturated carboxylic acid and a monomer having at least three radical polymerizable double bond. A bright paint, bright ink and bright plastics which contain the colored metallic pigment are also disclosed.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: August 6, 1991
    Assignee: Showa Alumi Powder K.K.
    Inventors: Kyoichi Chida, Takyua Uemura, Hiroshi Kitamura, Hideto Nitta