Patents by Inventor Teruaki Hiyamuta

Teruaki Hiyamuta 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).

  • Diffusion plate and method for manufacturing master die thereof
    Patent number: 6221561
    Abstract: A diffusion plate includes a plurality of superimposed basic patterns, each having a large number of microstructures. The microstructures are located in two dimensional periodic arrangements, and lattice vectors, corresponding to the periodic arrangement of the microstructures, vary in accordance with the pattern. The invention also discloses a method for manufacturing a master die for such a diffusion plate, and a focusing screen using the diffusion plate.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: April 24, 2001
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kuboya, Toshiharu Takahashi, Makoto Iki, Moriyasu Shirayanagi, Koichi Maruyama, Teruaki Hiyamuta, Takayuki Sensui
  • Method for manufacturing a master die for a diffusion plate and diffusion manufactured by said method
    Patent number: 5965327
    Abstract: A diffusion plate includes a plurality of superimposed basic patterns, each having a large number of microstructures, wherein the microstructures are located in two dimensional periodic arrangements, and wherein lattice vectors, corresponding to the periodic arrangement of the microstructures, vary in accordance with the pattern. The invention also discloses a method for manufacturing a master die for such a diffusion plate, and a focusing screen using the diffusion plate.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: October 12, 1999
    Assignee: Asahi Kogaku Kogyo Kaisha
    Inventors: Hiroshi Kuboya, Toshiharu Takahashi, Makoto Iki, Moriyasu Shirayanagi, Koichi Maruyama, Teruaki Hiyamuta, Takayuki Sensui
  • Method for manufacturing a master die for a diffusion plate and diffusion plate manufactured by said method
    Patent number: 5733710
    Abstract: A diffusion plate includes a plurality of superimposed basic patterns, each having a large number of microstructures. The microstructures are located in two dimensional periodic arrangements, and lattice vectors, corresponding to the periodic arrangement of the microstructures, vary in accordance with the pattern. The invention also discloses a method for manufacturing a master die for such a diffusion plate, and a focusing screen using the diffusion plate.
    Type: Grant
    Filed: July 3, 1995
    Date of Patent: March 31, 1998
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kuboya, Toshiharu Takahashi, Makoto Iki, Moriyasu Shirayanagi, Koichi Maruyama, Teruaki Hiyamuta, Takayuki Sensui