Patents by Inventor Kyoko Yamamoto

Kyoko Yamamoto 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).

  • Publication number: 20080280073
    Abstract: The present invention provides a substrate and a display device. The substrate comprises a resin layer 1 and a resin layer 2, wherein the resin layer 1 is composed of a liquid crystalline polyester A and a polymer B having a functional group reactive with a liquid crystalline polyester, and the resin layer 2 is composed of a resin other than a liquid crystalline polyester. The display device comprises the following (a) to (e) in that order: (a) the above-described resin layer 1, (b) the above-described resin layer 2, (c) electric conductive layer, (d) organic layer showing absorption, diffusion, optical rotation or emission of light by application of an electric field, and (e) transparent electric conductive layer.
    Type: Application
    Filed: April 17, 2006
    Publication date: November 13, 2008
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Kyoko Yamamoto
  • Publication number: 20070224366
    Abstract: The present invention provides a substrate for flexible displays, a method for producing the same, and a flexible display. The substrate for flexible displays comprises a resin composition layer containing an inorganic layered compound and a resin, wherein the amount of the inorganic layer compound is not less than 10 weight % and not more than 70 weight % based on the total amount of the resin and the inorganic layer compound. The method for producing a substrate for flexible displays comprises applying a mixture of a solvent, an inorganic layer compound, and a resin to a plate, drying the mixture, and peeling off the resulting layer from the plate. The display comprises the above substrate for flexible displays and electrodes.
    Type: Application
    Filed: June 9, 2005
    Publication date: September 27, 2007
    Inventors: Kazunori Akiyoshi, Kyoko Yamamoto
  • Publication number: 20020089620
    Abstract: Provided is an anisotropic scattering film comprising a micro-porous film and a substance in micro pores of said micro-porous film, wherein the micro pores observed on the surface of the film are substantially in the form of ellipse, the ratio of the major axis to the minor axis (major axis/minor axis) of said ellipse is over 1, the minor axis size of the micro pores is smaller than the wavelength of light, the directions of micro pores along the major axis are oriented to substantially one direction, the refractive index of the substance in micro pores of the micro-porous film differs from the refractive index of the micro-porous film, and the anisotropic scattering film has scattering anisotropy to a polarizing component of a polarized light.
    Type: Application
    Filed: July 19, 2001
    Publication date: July 11, 2002
    Inventors: Kyoko Yamamoto, Masato Kuwabara, Yasuteru Maeda, Koichi Fujisawa
  • Patent number: 6246452
    Abstract: A ferroelectric chiral smectic liquid crystal mixture comprising at least one compound of the formula (I): wherein R11 and R12 represent, independently each other, a C1-C20 alkyl, alkoxy or alkoxyalkyl group which may be substituted by at least one halogen atom and may have an unsaturated bond; A11, A12 and A13 represent, independently each other, a phenylene group which may be substituted by a fluorine atom, or the like; * indicates an asymmetric carbon atom; Z is a hydrogen atom or a fluorine atom; n is an integer of 0 to 10; r, s, t and u are each 0 or 1, provided that when u is 1, the compound (I) is a trans-olefin, and at least one compound of the formula (II): wherein R21 is a saturated or unsaturated C3-C20 alkyl group or a saturated or unsaturated C3-C20 alkoxyalkyl group; A21, A22 and A23 represent, independently each other, a phenylene group which may be substituted by a fluorine atom or the like; X2 is —C≡C— or the like; Z is a hydrogen atom or
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: June 12, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Chizu Sekine, Kyoko Yamamoto, Koichi Fujisawa, Yukari Fujimoto, Tsutomu Matsumoto, Masayoshi Minai
  • Patent number: 5866035
    Abstract: A liquid crystal mixture containing a compound of the formula (1) as an essential component, which has a large birefringence (.DELTA.n), an increased upper limit temperature of nematic phase and a widened temperature range of nematic phase, and a decreased responsiveness parameter.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: February 2, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Chizu Sekine, Kyoko Yamamoto, Yoshiaki Tsubata, Koichi Fujisawa
  • Patent number: 5762825
    Abstract: A liquid crystal mixture containing (a) at least one compound of a compound of the formula (1): ##STR1## in which R is a C.sub.1 -C.sub.12 alkyl group, etc.; X.sub.1, X.sub.2, X.sub.3, X.sub.4, Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 represent, independently each other, CH, CF or N; A is a hydrogen atom, a 4-R.sub.1 -(cycloalkyl) group, etc. in which R.sub. is a C.sub.1 -C.sub.12 alkyl group, etc. and p is 0 or 1; and Z is --C.tbd.C-- or a single bond, and (b) at least one compound of the formula (4): ##STR2## wherein rings C, D, E and F represent, independently each other, 1,4-phenylene, etc. which may be substituted by 1, 2 or 3 fluorine atoms; R.sub.2 is a hydrogen atom, a C.sub.1 -C.sub.12 alkyl group, etc.; R.sub.3 is a hydrogen atom, a fluorine atom, a fluoromethyl group, etc.; Z.sub.1, Z.sub.2 and Z.sub.3 represent, independently each other, --COO--, --OCO--, --OCH.sub.2 --, --CH.sub.2 O--, a C.sub.1 -C.sub.5 alkylene group, a C.sub.2 -C.sub.5 alkenylene group, etc.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: June 9, 1998
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshiaki Tsubata, Kyoko Yamamoto, Koichi Fujisawa, Yukari Fujimoto, Tsutomu Matsumoto, Masayoshi Minai, Chizu Sekine