Patents by Inventor Takao Hieda

Takao Hieda 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).

  • Aluminum flake pigment
    Patent number: 4936913
    Abstract: An aluminium flake pigment characterized in that the ratio of the average thickness of flakes to the average diameter of flakes is in the range of 0.025 to 0.3, preferably 0.028 to 0.1 and the ratio of the water covering area to the specific surface area is in the range of 0.18 to 0.4, preferably 0.19 to 0.35 is disclosed herein.The aluminium flake pigment of the invention has the improved resistance to the circulation of the metallic paint during the painting.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: June 26, 1990
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventor: Takao Hieda
  • Aluminum flake pigment
    Patent number: RE36911
    Abstract: An aluminium flake pigment characterized in that the ratio of the average thickness of flakes to the average diameter of flakes is in the range of 0.025 to 0.3, preferably 0.028 to 0.1 and the ratio of the water covering area to the specific surface area is in the range of 0.18 to 0.4, preferably 0.19 to 0.35 is disclosed herein.The aluminium flake pigment of the invention has the improved resistance to the circulation of the metallic paint during the painting.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: October 17, 2000
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventor: Takao Hieda