Patents by Inventor Shigeki Furuhashi

Shigeki Furuhashi 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).

  • Color polarizer with support for liquid crystal projector and color liquid crystal projector
    Patent number: 6552849
    Abstract: The invention is to develop a color polarizing plate with a support, the polarizing plate having both good brightness and polarizing efficiency for a blue channel (for blue light). The color polarizing plate with a support for a liquid crystal projector comprises a polarizing plate containing a stilbene type water-soluble azo dye as a dichroic molecule and a support, wherein the polarizing plate has an average single transmittance of 39% or more and an average crossed transmittance of 0.4% or less at 420 to 500 nm and an average crossed transmittance of 4% or more at 50 to 780 nm.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: April 22, 2003
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., LTD
    Inventors: Shigeki Furuhashi, Tadashi Matsuo, Kazuyuki Kawabe