Patents by Inventor Masaki Shimojoh

Masaki Shimojoh 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).

  • Titanium dioxide pigments, process for the production thereof, and resin compositions containing the pigments
    Patent number: 7579391
    Abstract: The invention provides titanium dioxide pigments for plastics resin compositions which are excellent in dispersibility, light resistance, and weather resistance and little cause surface imperfection. In particular, the invention provides a titanium dioxide pigment suitable for general-purpose plastics resin compositions which can attain excellent dispersion and lacing resistance even when blended in a high concentration; a titanium dioxide pigment suitable for engineering plastics resin compositions which can attain dispersion properties, silver streaking resistance, inhibition of reduction in molecular weight, and thermal discoloration resistance at high levels; a process for the production of the pigments; and resin compositions containing the pigments. A titanium dioxide pigment for plastics resin compositions, characterized in that each titanium dioxide particle has a dense hydrous silica coat covering its surface and an organic compound coat formed on the silica coat not through an interlayer.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: August 25, 2009
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Hideo Takahashi, Masaki Shimojoh, Toshihiko Akamatsu, Keisuke Iriyama
  • Titanuim Dioxide Pigments, Process For The Production Thereof,And Resin Compostions Containing The Pigments
    Publication number: 20070295244
    Abstract: The invention provides titanium dioxide pigments for plastics resin compositions which are excellent in dispersibility, light resistance, and weather resistance and little cause surface imperfection. In particular, the invention provides a titanium dioxide pigment suitable for general-purpose plastics resin compositions which can attain excellent dispersion and lacing resistance even when blended in a high concentration; a titanium dioxide pigment suitable for engineering plastics resin compositions which can attain dispersion properties, silver streaking resistance, inhibition of reduction in molecular weight, and thermal discoloration resistance at high levels; a process for the production of the pigments; and resin compositions containing the pigments. A titanium dioxide pigment for plastics resin compositions, characterized in that each titanium dioxide particle has a dense hydrous silica coat covering its surface and an organic compound coat formed on the silica coat not through an interlayer.
    Type: Application
    Filed: June 23, 2005
    Publication date: December 27, 2007
    Inventors: Ralf Himmelreich, Sabine Werner, Claudia Fritz, Hideo Takahashi, Masaki Shimojoh, Toshihiko Akamatsu, Keisuke Iriyama