Patents by Inventor Hidekazu Yamanakajima

Hidekazu Yamanakajima 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 for producing embossed metallic flakelets
    Patent number: 6168100
    Abstract: An improved method of preparing embossed metallic flakelets for a hologram pigment improves productivity through a simpler process. A metallic foil 12 is first pressed between a cooperative pair of dies 10 having mutually complementary embossed patterns to thereby transfer to the surfaces of the metallic foil 12 the embossed pattern of the dies 10. Finally, the pulverized metallic flakelets are mixed with predetermined other ingredients to make a hologram pigment.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: January 2, 2001
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Kato, Masatsugu Nakanishi, Hidekazu Yamanakajima, Yoshihiro Yamamura, Yukio Okochi, Takatoshi Katsumata