Patents by Inventor Kiyoshi Kanemaru

Kiyoshi Kanemaru 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).

  • Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica
    Patent number: 4375373
    Abstract: A stable inorganic pigment having the surface thereof a continuous coating of fine amorphous silica.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: March 1, 1983
    Assignees: Toro Ganryo Kogyo Co., Ltd., Nippon Chemical Industrial Co., Ltd.
    Inventors: Nobuyoshi Abe, Kiyoshi Kanemaru, Minoru Yokoyama
  • Process for preparing stable inorganic pigment
    Patent number: 4334933
    Abstract: A process for preparing a stable inorganic pigment coated with a fine amorphous silica which comprises forming a silica sol in an aqueous prepared slurry of an inorganic pigment by reacting an alkali silicate solution with one or more acid gases so that a fine silica sol covers the surfaces of the particles of the inorganic pigment.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: June 15, 1982
    Assignees: Toho Ganryo Kogyo Co., Ltd., Nippon Chemical Industrial Co., Ltd.
    Inventors: Nobuyoshi Abe, Syozo Takatsu, Kiyoshi Kanemaru, Minoru Yokoyama