Patents by Inventor Tadayuki Kameyama

Tadayuki Kameyama 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: 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
  • Patent number: 9348074
    Abstract: A method for producing an optical laminate including a film substrate and a polarizing layer which comprises the steps of: (A) laminating a re-releasable film on one main surface of the film substrate to obtain a laminate film substrate; B) performing a rubbing treatment on the other main surface of the film substrate of the laminate film substrate; C) coating the rubbing-treated surface of the film substrate with a solution containing a lyotropic liquid crystal compound and a solvent; and D) detaching the re-releasable film from the laminate film substrate.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 24, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiaki Asanoi, Toru Umemoto, Shoichi Matsuda, Tadayuki Kameyama
  • Patent number: 9341758
    Abstract: The present invention provides an optical laminated body having a patterning polarizer layer in which a more complicated pattern can be set. The optical laminated body 1A of the present invention has a patterning polarizer layer 3A having at least two polarizing regions 31A and 32A having different single transmittances, and a substrate 2A. The two polarizing regions 31A and 32A are different in thickness.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 17, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shoichi Matsuda, Tadayuki Kameyama, Hiroshi Tomohisa, Yoshiaki Asanoi, Isao Hirose, Yoshihiro Kitamura, Kanji Nishida
  • 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
  • Patent number: 9254627
    Abstract: There is provided a manufacturing method for a transparent substrate excellent in bending property, flexibility, impact resistance, and external appearance. A manufacturing method for a transparent substrate according to an embodiment of the present invention includes: a step A of applying a thermoplastic resin (A) composition solution onto a support backing having solvent permeability to form an applied layer; a step B of attaching at least one surface of an inorganic glass and the applied layer to each other via an adhesive composition to form a laminate; a step C of subjecting the laminate to a first heat treatment to reduce an amount of a solvent remaining in the applied layer to a predetermined amount; and a step D including peeling the support backing from the laminate and subjecting the resultant to a second heat treatment to dry the applied layer, thereby forming a thermoplastic resin layer.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: February 9, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Takeshi Murashige, 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: 20150367621
    Abstract: There is provided a method of producing a flexible film (fragmented laminate) which has a smooth cut surface and is suppressed in breakage of a thin glass, the method including cutting a laminate having the thin glass and a resin layer. The method of producing a flexible film of the present invention includes cutting a laminate including a thin glass having a thickness of 100 ?m or less and a resin layer arranged on one side, or each of both sides, of the thin glass. The method of producing a flexible film includes the steps of forming a groove from an outer surface side of the resin layer and cutting the laminate along the groove.
    Type: Application
    Filed: February 20, 2014
    Publication date: December 24, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Tadayuki Kameyama
  • Patent number: 9156060
    Abstract: The present invention provides a method for producing a waterproof organic thin film being capable of restraining the generation of defects such as a crack. The method for producing a waterproof organic thin film includes a waterproofing step of preparing a long laminate having an organic thin film and bringing at least the organic thin film into contact with a waterproofing-treatment liquid, a washing step of washing at least the organic thin film surface of the long laminate, and a conveying step to be performed between the waterproofing step and the washing step, the conveying step being a step of conveying the long laminate from the waterproofing step to the washing step, wherein in the conveying step, the long laminate is conveyed while the waterproofing-treatment liquid remaining on the organic thin film surface is caused to flow relatively to the organic thin film surface.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 13, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Toru Umemoto, Shoichi Matsuda, Tadayuki Kameyama
  • Publication number: 20150175858
    Abstract: An adhesive is provided that shows excellent adhesion even when any one of a glass and a thermoplastic resin is used as an adherend, and that is excellent in solvent resistance. An adhesive according to an embodiment is used for an adherend that includes a glass and/or a resin layer including a thermoplastic resin (A), and the adhesive includes: a thermoplastic resin (b) having a glass transition temperature (Tg) of more than 200° C.; a thermosetting monomer (c) having at least one substituent represented by —SiR?x(OR)y where R represents a linear or branched alkyl group having 1 to 5 carbon atoms, R? represents a linear or branched alkyl group having 1 to 5 carbon atoms, x represents an integer of from 0 to 2, y represents an integer of from 1 to 3, and x+y equals 3; and a catalyst (d) that acts on the substituent represented by —SiR?x(OR)y.
    Type: Application
    Filed: May 28, 2013
    Publication date: June 25, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Takeshi Murashige, Tadayuki Kameyama
  • Publication number: 20150153495
    Abstract: The present invention provides an optical laminated body having a patterning polarizer layer in which a more complicated pattern can be set. The optical laminated body 1A of the present invention has a patterning polarizer layer 3A having at least two polarizing regions 31A and 32A having different single transmittances, and a substrate 2A. The two polarizing regions 31A and 32A are different in thickness.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 4, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shoichi Matsuda, Tadayuki Kameyama, Hiroshi Tomohisa, Yoshiaki Asanoi, Isao Hirose, Yoshihiro Kitamura, Kanji Nishida
  • Publication number: 20150140343
    Abstract: An adhesive is provided that shows excellent adhesion under high temperature even when any one of a glass and a thermoplastic resin is used as an adherend. An adhesive according to an embodiment is used for an adherend that includes a glass and/or a resin layer including a thermoplastic resin (A), and the adhesive including: a thermoplastic resin (b); a thermosetting monomer (c); and a curing catalyst, wherein: the thermoplastic resin (b) includes an aromatic thermoplastic resin (b1) having a glass transition temperature (Tg) of more than 200° C. and/or an alicyclic thermoplastic resin (b2) having a glass transition temperature (Tg) of more than 200° C.; the thermosetting monomer (c) has compatibility with the thermoplastic resin (b); and a content of the thermosetting monomer (c) is from 5 parts by weight to 50 parts by weight with respect to 100 parts by weight of the thermoplastic resin (b).
    Type: Application
    Filed: May 28, 2013
    Publication date: May 21, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Takeshi Murashige, Tadayuki Kameyama
  • Publication number: 20150141629
    Abstract: The present invention relates to a water-resistant organic thin film obtained by crosslinking, with organic nitrogen compounds, an organic thin film comprising an organic dye having an anionic group, wherein the organic nitrogen compounds are first, second, and third acyclic organic nitrogen compounds each having two or more nitrogen atoms per molecule, wherein the nitrogen atoms of each of the first, second, and third organic nitrogen compounds are each in a cationic group, and the relation A?0.4 nm<B<C is satisfied, wherein A represents a distance (nm) between adjacent nitrogen atoms in the first organic nitrogen compound, B represents a distance (nm) between adjacent nitrogen atoms in the second organic nitrogen compound, and C represents a distance (nm) between adjacent nitrogen atoms in the third organic nitrogen compound.
    Type: Application
    Filed: June 10, 2013
    Publication date: May 21, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Tomohisa, Toru Umemoto, Shoichi Matsuda, Tadayuki Kameyama
  • Publication number: 20150072155
    Abstract: There is provided a manufacturing method for a transparent substrate excellent in bending property, flexibility, impact resistance, and external appearance. A manufacturing method for a transparent substrate according to an embodiment of the present invention includes: a step A of applying a thermoplastic resin (A) composition solution onto a support backing having solvent permeability to form an applied layer; a step B of attaching at least one surface of an inorganic glass and the applied layer to each other via an adhesive composition to form a laminate; a step C of subjecting the laminate to a first heat treatment to reduce an amount of a solvent remaining in the applied layer to a predetermined amount; and a step D including peeling the support backing from the laminate and subjecting the resultant to a second heat treatment to dry the applied layer, thereby forming a thermoplastic resin layer.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Takeshi Murashige, Tadayuki Kameyama
  • Publication number: 20150072125
    Abstract: Provided is a transparent sheet that is prevented from curling, is excellent in external appearance, prevents the progress of a crack, and the rupture, of its glass, and is excellent in flexibility. A transparent sheet of the present invention includes: an inorganic glass; and a resin film bonded onto one side, or each of both sides, of the inorganic glass through an adhesion layer, in which: the inorganic glass has a thickness of from 35 ?m to 100 ?m; the adhesion layer has a single-layer thickness of more than 10 ?m and (the thickness of the inorganic glass×0.3) ?m or less; the adhesion layer has a modulus of elasticity at 25° C. of from 1.2 GPa to 10 GPa; and a ratio of a total thickness of the resin film to the thickness of the inorganic glass is from 0.9 to 4.
    Type: Application
    Filed: March 19, 2013
    Publication date: March 12, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Tadayuki Kameyama
  • Patent number: 8821989
    Abstract: Provided is a method for manufacturing an optical laminated body having a substrate and a polarizing film that contains a lyotropic liquid crystal compound and is formed on the substrate. The method includes a step (A) of applying a coating liquid containing the lyotropic liquid crystal compound and a solvent onto the substrate and forming a coat film with the lyotropic liquid crystal compound orientated in one direction, and a step (B) of applying a magnetic field to the coat film in a direction substantially parallel to an orientation direction of the lyotropic liquid crystal compound.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: September 2, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Toshimasa Nishimori, Tadayuki Kameyama, Tooru Umemoto
  • Patent number: 8808813
    Abstract: The present invention provides a method of producing a liquid crystalline coating liquid that substantially does not contain a fine crystal. The method of producing a liquid crystalline coating liquid of the present invention contains a heating step of heating a treatment liquid containing a lyotropic liquid crystalline compound containing an impurity, and a solvent, a depositing step of depositing a deposit by cooling the treatment liquid after the heating step to a temperature lower than 40° C., and a removing step of removing the deposit from the treatment liquid.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: August 19, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Toru Umemoto, Tadayuki Kameyama
  • Patent number: 8790544
    Abstract: It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: July 29, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Tadayuki Kameyama, Sadahiro Nakanishi, Toru Umemoto
  • Patent number: 8785607
    Abstract: The present invention relates to a method for manufacturing a water resistant optically anisotropic film comprising: a water resistant treatment step of bringing an optically anisotropic film containing an organic dye having an anionic group into contact with a water resistant treatment liquid containing a multivalent metal salt or a compound having two or more nitrogen atoms in a molecule thereof; and a cleaning step of cleaning the optically anisotropic film after the water resistant treatment, using a cleaning liquid containing a hydrophilic organic compound.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: July 22, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Toru Umemoto, Tadayuki Kameyama
  • Patent number: 8734677
    Abstract: A liquid-crystal coating fluid which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein Q1 is an aryl group which may have any substituent group; Q2 is an arylene group which may have any substituent group; R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group which may have any substituent group; and M is a counter ion.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 27, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Kyoko Ishii, Tadayuki Kameyama
  • Patent number: 8734918
    Abstract: A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein Q1 is an aryl group which may have any substituent group; Q2 is an arylene group which may have any substituent group; R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group (these groups may have any substituent groups); and M is a counter ion.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: May 27, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shoichi Matsuda, Kyoko Nishiguchi, Tadayuki Kameyama