Patents by Inventor Shouichi Matsuda

Shouichi Matsuda 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: 20160196894
    Abstract: There is provided a laminate excellent in dimensional stability under high temperature and high humidity despite the fact that the laminate includes resin films. A laminate according to an embodiment of the present invention includes a plurality of resin films with hard coat layers, which are laminated together, the plurality of resin films with hard coat layers each including a base layer containing a thermoplastic resin and a hard coat layer containing a curable resin, the hard coat layer being formed on the base layer.
    Type: Application
    Filed: December 5, 2013
    Publication date: July 7, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shouichi Matsuda, Ayami Nakato, Hiroyuki Takemoto
  • Publication number: 20160195948
    Abstract: There is provided a transparent conductive film having a hardly visible pattern of the conductive part (conductive pattern) can be provided. A transparent conductive film of the present invention includes: a transparent base material; and a transparent conductive layer arranged on at least one side of the transparent base material, wherein: the transparent conductive layer includes a conductive part and an insulation part; the conductive part includes a metal nanowire; and the insulation part includes an air bubble and/or a non-conductive light-scattering body.
    Type: Application
    Filed: July 8, 2014
    Publication date: July 7, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Ayami Nakato, Kazumasa Okada, Shouichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Publication number: 20160062510
    Abstract: A conductive film is provided which is excellent in bending resistance, conductivity is not impaired even when the film is bent, and when the film is applied to an image display apparatus including a polarizing plate, the film can contribute to an improvement in visibility through a polarizing lens. A conductive film includes a retardation film; and a transparent conductive layer arranged on at least one surface of the retardation film, wherein: the retardation film has an in-plane retardation at a wavelength of 550 nm of from 90 nm to 190 nm; a ratio (Re[400]/Re[550]) of an in-plane retardation Re[400] of the retardation film at a wavelength of 400 nm to the in-plane retardation Re[550] of the retardation film at a wavelength of 550 nm is from 0.5 to 0.9; and the transparent conductive layer includes at least one of a conductive nanowire, a metal mesh, and a conductive polymer.
    Type: Application
    Filed: April 1, 2014
    Publication date: March 3, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Shouichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Publication number: 20160011351
    Abstract: There is provided an image display apparatus having high contrast and making it difficult to visually observe its conductive pattern despite including a metal nanowire or a metal mesh. An image display apparatus of the present invention includes: a circularly polarizing plate, a transparent conductive film, and a display element comprising a reflector made of a metal in the stated order from a viewer side, wherein: the transparent conductive film comprises a transparent base material and a transparent conductive layer arranged on at least one side of the transparent base material; the transparent base material has an in-plane retardation Re of from 1 nm to 100 nm; and the transparent conductive layer comprises a metal nanowire or a metal mesh.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 14, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Shouichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
  • Publication number: 20150250078
    Abstract: There is provided a transparent conductive film that is simply and easily produced, has a high transmittance and high conductivity, and can suppress the occurrence of a rainbow-like patchy pattern. A transparent conductive film of the present invention includes: a transparent base material; and a transparent conductive layer formed on the transparent base material, the transparent conductive film having a total light transmittance of 80% or more, wherein: the transparent base material has an absolute value of a thickness direction retardation of 100 nm or less; and the transparent conductive layer contains a metal nanowire or a metal mesh.
    Type: Application
    Filed: November 1, 2013
    Publication date: September 3, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shouichi Matsuda, Hiroshi Tomohisa, Kanji Nishida
  • Publication number: 20130280438
    Abstract: A method for producing a polarizing film includes a step (1) of preparing a lyotropic liquid crystalline solution having electric conductivity of not more than 50 ?S/cm (expressed in terms of 0.05% by weight) and containing a dichroic dye and a solvent, a step (2) of preparing a base material having at least one surface subjected to a hydrophilization treatment, and a step (3) of coating the solution prepared in the step (1) on the hydrophilized surface of the base material prepared in the step (2) at a coating rate of not less than 100 mm/second, and drying the solution. The polarizing film produced in the method has a dichroic ratio of 25 or more at a wavelength of 600 nm.
    Type: Application
    Filed: June 25, 2013
    Publication date: October 24, 2013
    Inventors: Yasuko Iwakawa, Shuusaku Nakano, Tetsuo Inoue, Shouichi Matsuda
  • Patent number: 8023098
    Abstract: Provided is a production method for a thin birefringent film with a satisfactory alignment property, in which a refractive index is controlled three-dimensionally and optical properties are unlikely to decrease in the case where the birefringent film is placed under high temperature and high humidity. The production method for a birefringent film of the present invention includes: the step (1) of preparing a solution that exhibits a nematic liquid crystal phase, containing at least one kind of polycyclic compound containing a —SO3M group and/or a —COOM group (M represents a counter ion) and a solvent; the step (2) of preparing a base material at least one surface of which is subjected to a hydrophilization treatment; and the step (3) of applying the solution prepared in the step (1) to the surface of the base material prepared in the step (2), the surface being subjected to the hydrophilization treatment, followed by drying, in which a contact angle of water at 23° C.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: September 20, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Junzo Miyazaki, Shouichi Matsuda
  • Publication number: 20090262297
    Abstract: Provided is a production method for a thin birefringent film with a satisfactory alignment property, in which a refractive index is controlled three-dimensionally and optical properties are unlikely to decrease in the case where the birefringent film is placed under high temperature and high humidity. The production method for a birefringent film of the present invention includes: the step (1) of preparing a solution that exhibits a nematic liquid crystal phase, containing at least one kind of polycyclic compound containing a —SO3M group and/or a —COOM group (M represents a counter ion) and a solvent; the step (2) of preparing a base material at least one surface of which is subjected to a hydrophilization treatment; and the step (3) of applying the solution prepared in the step (1) to the surface of the base material prepared in the step (2), the surface being subjected to the hydrophilization treatment, followed by drying, in which a contact angle of water at 23° C.
    Type: Application
    Filed: August 29, 2007
    Publication date: October 22, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junzo Miyazaki, Shouichi Matsuda
  • Publication number: 20090168000
    Abstract: Provided is very thin liquid crystal panel and liquid crystal display apparatus with a high contrast ratio in an oblique direction, less light leakage, and a small color shift in an oblique direction. The liquid crystal panel of the present invention includes a liquid crystal cell, a first polarizer arranged on one side of the liquid crystal cell, a second polarizer arranged on the other side of the liquid crystal cell, a first optical element arranged between the first polarizer and the liquid crystal cell, and a second optical element arranged between the first optical element and the liquid crystal cell. The first optical element has substantially optically negative uniaxial property, and the second optical element exhibits a refractive index ellipsoid of nx>nz>ny, and is formed of one or more kinds of polycylic compound having a —SO3M group and/or a —COOM group (M represents a counter ion).
    Type: Application
    Filed: January 18, 2008
    Publication date: July 2, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junzo Miyazaki, Shouichi Matsuda, Tatsuki Nagatsuka
  • Publication number: 20090103029
    Abstract: Provided are a liquid crystal panel and a liquid crystal display apparatus with a high contrast ratio in an oblique direction, less light leakage, a small color shift in an oblique direction, and extremely small thickness. The liquid crystal panel of the present invention includes a liquid crystal cell, a first polarizer arranged on one side of the liquid crystal cell, an optical element (A), an optical element (B), and a second polarizer arranged on the other side of the liquid crystal cell. The optical element (A) exhibits a refractive index ellipsoid of nx>nz>ny, is formed of a specific polycyclic compound, and has an Nz coefficient of 0.05 to 0.45. The optical element (B) exhibits a refractive index ellipsoid of nx>nz>ny and has an Nz coefficient of 0.55 to 0.95.
    Type: Application
    Filed: January 18, 2008
    Publication date: April 23, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junzo Miyazaki, Shouichi Matsuda, Tatsuki Nagatsuka
  • Publication number: 20090059370
    Abstract: Provided is a thin birefringent film whose refractive index is three-dimensionally controlled. The present invention provides a birefringent film including at least one polycyclic compound containing a —SO3M group and/or a —COOM group having a refractive index ellipsoid satisfying a relationship represented by nx>nz>ny, in which M represents a counter ion. Since such a birefringent film has a high in-plane refractive index, the thickness thereof is sharply reduced as compared with a conventional birefringent film and a desired retardation value can be obtained.
    Type: Application
    Filed: March 9, 2007
    Publication date: March 5, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Junzo Miyazaki, Tetsuo Inoue, Shouichi Matsuda, Tatsuki Nagatsuka
  • Publication number: 20090027597
    Abstract: A method for producing a polarizing film of the present invention comprises a step (1) of preparing a lyotropic liquid crystalline solution having electric conductivity of not more than 50 ?S/cm (expressed in terms of 0.05% by weight) and containing a dichroic dye and a solvent, a step (2) of preparing a base material having at least one surface subjected to a hydrophilization treatment, and a step (3) of coating the solution prepared in the step (1) on the hydrophilized surface of the base material prepared in the step (2) at a coating rate of not less than 100 mm/second, and drying the solution. The method of the present invention can easily produce a polarizing film having a high dichroic ratio.
    Type: Application
    Filed: March 20, 2007
    Publication date: January 29, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yasuko Iwakawa, Shuusaku Nakano, Tetsuo Inoue, Shouichi Matsuda
  • Patent number: 5648319
    Abstract: Disclosed is an oxide superconductor comprising an oxide of RE, Ba and Cu, which consists of a superconductor having a texture wherein the crystal directions of the 123 phase in the matrix are uniform, large angle grain boundaries having an directional difference larger than 20.degree. are not present and the 211 phase is finely dispersed, or an aggregate thereof, wherein the superconductor is formed into a plate or wire and the c-axis of the crystal of the formed body is uniform within .+-.30.degree. to the normal of the plate face of the formed body or in the range of from 60.degree. to 120.degree. to said normal. Also disclosed is a process for the preparation of an oxide superconductor as set forth above, which comprises inserting a formed body as mentioned above to a heating furnace and moving a region of a temperature at which grains are formed in the 123 phase of the matrix of the formed body, i.e., through a region having a temperature of from 1050.degree. to 910.degree. C.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: July 15, 1997
    Assignee: Nippon Steel Corporation
    Inventors: Mitsuru Morita, Katsuyoshi Miyamoto, Kiyoshi Sawano, Shouichi Matsuda
  • Patent number: 5262391
    Abstract: Disclosed is an oxide superconductor comprising an oxide of RE, Ba and Cu, which consists of a superconductor having a texture wherein the crystal directions of the 123 phase in the matrix are uniform, large angle grain boundaries having an directional difference larger than 20.degree. are not present and the 211 phase is finely dispersed, or an aggregate thereof, wherein the superconductor is formed into a plate or wire and the c-axis of the crystal of the formed body is uniform within .+-.30.degree. to the normal of the plate face of the formed body or in the range of from 60.degree. to 120.degree. to said normal. Also disclosed is a process for the preparation of an oxide superconductor as set forth above, which comprises inserting a formed body as mentioned above to a heating furnace and moving a region of a temperature at which grains are formed in the 123 phase of the matrix of the formed body, i.e., through a region having a temperature of from 1050.degree. to 910.degree. C.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: November 16, 1993
    Assignee: Nippon Steel Corporation
    Inventors: Mitsuru Morita, Katsuyoshi Miyamoto, Kiyoshi Sawano, Shouichi Matsuda