Patents by Inventor Kana Tanabu

Kana Tanabu 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).

  • Uniaxially stretched multi-layer laminate film, polarizing plate comprising same, optical member for liquid crystal display device, and liquid crystal display device
    Patent number: 9519090
    Abstract: A uniaxially stretched multi-layer laminate film that exhibits a high polarization performance of 99.5% or more in a simpler configuration than before, a polarizing plate that is composed of the same, an optical member for a liquid crystal display device, and a liquid crystal display device are provided. Namely, in the uniaxially stretched multi-layer laminate film in which a first layer and a second layer are alternately laminated, the uniaxially stretched multi-layer laminate film includes an intermediate layer that has a thickness of 2 ?m or more and 30 ?m or less; the first layer is composed of a polyester containing a naphthalene dicarboxylic acid ester; the second layer is composed of a copolymer polyester and is an optically isotropic layer that has an average refractive index of 1.50 or more and 1.60 or less; the first layer, the second layer, both first and second layers, or the intermediate layer contains a visible light absorbent, which has a weight loss of less than 10% when it is kept at 300° C.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: December 13, 2016
    Assignee: TEIJIN LIMITED
    Inventors: Taro Oya, Kana Tanabu, Takashi Nakahiro, Tetsuo Yoshida, Hiromi Shiroma, Tomoko Shimizu
  • UNIAXIALLY STRETCHED MULTI-LAYER LAMINATE FILM, POLARIZING PLATE COMPRISING SAME, OPTICAL MEMBER FOR LIQUID CRYSTAL DISPLAY DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20150124194
    Abstract: A uniaxially stretched multi-layer laminate film that exhibits a high polarization performance of 99.5% or more in a simpler configuration than before, a polarizing plate that is composed of the same, an optical member for a liquid crystal display device, and a liquid crystal display device are provided. Namely, in the uniaxially stretched multi-layer laminate film in which a first layer and a second layer are alternately laminated, the uniaxially stretched multi-layer laminate film includes an intermediate layer that has a thickness of 2 ?m or more and 30 ?m or less; the first layer is composed of a polyester containing a naphthalene dicarboxylic acid ester; the second layer is composed of a copolymer polyester and is an optically isotropic layer that has an average refractive index of 1.50 or more and 1.60 or less; the first layer, the second layer, both first and second layers, or the intermediate layer contains a visible light absorbent, which has a weight loss of less than 10% when it is kept at 300° C.
    Type: Application
    Filed: September 20, 2013
    Publication date: May 7, 2015
    Applicant: TEIJIN LIMITED
    Inventors: Taro Oya, Kana Tanabu, Takashi Nakahiro, Tetsuo Yoshida, Hiromi Shiroma, Tomoko Shimizu