Patents by Inventor Seiji Muro

Seiji Muro 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).

  • Projection screen having a plural number of light control layers
    Patent number: 7586680
    Abstract: A projection screen using light control layers having high light diffusion and further providing an image with high image quality over a wide angle range without deteriorating light transmittance is provided. A plural number of light control layers in which a haze value of the layer is dependent on an angle and a light scattering angle region showing a haze value of 60% or more is in the range of 30° or more when light is injected on the surface of the layer at an angle of 0 to 180° are laminated to obtain a screen.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: September 8, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toyokazu Okada, Seiji Muro
  • Projection screen
    Publication number: 20050219692
    Abstract: A projection screen using light control layers having high light diffusion and further providing an image with high image quality over a wide angle range without deteriorating light transmittance is provided. A plural number of light control layers in which a haze value of the layer is dependent on an angle and a light scattering angle region showing a haze value of 60% or more is in the range of 30° or more when light is injected on the surface of the layer at an angle of 0 to 180° are laminated to obtain a screen.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 6, 2005
    Inventors: Toyokazu Okada, Seiji Muro