Patents Examined by John F. Niebing
  • 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