Patents by Inventor Syoushi Takahashi

Syoushi Takahashi 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).

  • Patent number: 7445820
    Abstract: There is provided an optical film obtained by laminating a polarizing film protective layer and a retardation film comprising a liquid crystalline compound layer, a retardation film protective layer and a polymer film, wherein the retardation film protective layer comprising a cured product of a UV-curable resin composition is inserted between the polymer film and the liquid crystalline compound layer to control or block the migration to the liquid crystalline compound layer of a material present in the polymer film and affecting the optical properties of the liquid crystalline compound layer by migrating to the liquid crystalline compound layer, in such a manner that the protective layer side of the polarizing film and the liquid crystalline compound layer side of the retardation film are opposed to each other.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: November 4, 2008
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Kouichi Tanaka, Syoushi Takahashi, Kenichiro Yoshioka
  • Patent number: 7442420
    Abstract: A UV-curable resin composition for alignment film and an alignment film which is prepared by curing the composition with UV rays. The migration of a material which is present in a polymer film and capable of affecting the optical properties of a liquid crystalline compound layer to the liquid crystalline compound layer is controlled or blocked. The composition comprises at least one (meth)acrylate compound having one or more polar groups and one or more (meth)acryloyl groups in the molecule and a photoinitiator. A protective layer is inserted between a polymer film and a liquid crystalline compound layer for controlling or blocking the migration of the material which is present in the polymer film and capable of affecting the optical properties of the liquid crystalline compound layer.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: October 28, 2008
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Kouichi Tanaka, Syoushi Takahashi, Kenichiro Yoshioka
  • Publication number: 20060008663
    Abstract: (1) There are provided a UV-curable resin composition for alignment film and an alignment film which is prepared by curing the composition with UV rays. (2) The migration of a material which is present in a polymer film and capable of affecting the optical properties of a liquid crystalline compound layer to the liquid crystalline compound layer is controlled or blocked. (1) A UV-curable resin composition for alignment film comprising at least one (meth)acrylate compound having one or more polar groups and one or more (meth)acryloyl groups in the molecule and a photoinitiator; and an alignment film which is prepared by curing the composition with UV rays. (2) A protective layer inserted between a polymer film and a liquid crystalline compound layer for controlling or blocking the migration of a material, which is present in a polymer film and capable of affecting the optical properties of the liquid crystalline compound layer, to the liquid crystalline compound layer.
    Type: Application
    Filed: September 2, 2005
    Publication date: January 12, 2006
    Inventors: Kouichi Tanaka, Syoushi Takahashi, Kenichiro Yoshioka
  • Publication number: 20050089650
    Abstract: (1) There are provided a UV-curable resin composition for alignment film and an alignment film which is prepared by curing the composition with UV rays. (2) The migration of a material which is present in a polymer film and capable of affecting the optical properties of a liquid crystalline compound layer to the liquid crystalline compound layer is controlled or blocked. (1) A UV-curable resin composition for alignment film comprising at least one (meth)acrylate compound having one or more polar groups and one or more (meth)acryloyl groups in the molecule and a photoinitiator; and an alignment film which is prepared by curing the composition with UV rays. (2) A protective layer inserted between a polymer film and a liquid crystalline compound layer for controlling or blocking the migration of a material, which is present in a polymer film and capable of affecting the optical properties of the liquid crystalline compound layer, to the liquid crystalline compound layer.
    Type: Application
    Filed: February 22, 2002
    Publication date: April 28, 2005
    Inventors: Kouichi Tanaka, Syoushi Takahashi, Kenichiro Yoshioka