Patents by Inventor Hiroaki Kishioka

Hiroaki Kishioka 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: 10025432
    Abstract: Provided is a capacitive touch panel which has enhanced sensitivity and is usable in an image display panel, etc. in this capacitive touch panel, a window, a first transparent film having a first transparent conductive electrode pattern formed on one surface thereof, and a second transparent film having a second transparent conductive electrode pattern which is formed on one surface thereof and disposed with respect to the first transparent film in such a manner as to allow a capacitance to be formed therebetween, are stacked in turn. The capacitive touch panel comprises a first transparent inter-layer resin provided between the window and the first transparent film, and a second transparent inter-layer resin provided between the first transparent film and the second transparent film, wherein the first transparent inter-layer resin has a dielectric constant greater than that of the second transparent inter-layer resin.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: July 17, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroaki Kishioka, Mayumi Kishioka, Tomohide Banba, Mitsuru Honjo, Naoki Nagaoka, Kazumasa Igarashi, Yuki Hasegawa, Hiroshi Wada, Yuki Tsubaki, Tomotake Nashiki
  • Patent number: 9796883
    Abstract: The present invention provides an excellent optical pressure-sensitive adhesive sheet having an excellent adhesion property to an optical member. The present invention relates to an optical pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer, wherein a relative dielectric constant at a frequency of 1 MHz is 5 to 10, and an adhesion strength to a glass, which is measured with a peel angle of 180° and a tensile speed of 300 mm/min after 30 min of laminating the optical pressure-sensitive adhesive sheet to the glass, is 3 N/20 mm to 15 N/20 mm.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: October 24, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hirofumi Katami, Tomohide Banba, Shou Takarada, Masato Fujita, Takahiro Nonaka, Hiroaki Kishioka
  • Patent number: 9695337
    Abstract: The present invention provides an optical pressure-sensitive adhesive sheet in which white turbidity is not caused by humidification and durability is excellent as well. The present invention provides an optical pressure-sensitive adhesive sheet, comprising: a pressure-sensitive adhesive layer in which a moisture ratio after storage under an environment of 60° C. and 95% RH for 120 hours is 0.65 wt % or more, and a shear storage elastic modulus at 85° C. which is measured by a dynamic viscoelastic measurement is 5.0×104 to 5.0×105 Pa, wherein a peeling distance measured by the constant-load peel test is 30 mm or less when an adherend is a polyethylene terephthalate plate, and the peeling distance measured by the following constant-load peel test is 30 mm or less when the adherend is an acrylic plate.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: July 4, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroaki Kishioka, Masatomo Natsui, Hiroaki Fumoto
  • Patent number: 9580624
    Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: February 28, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Koji Shitara, Hiroko Ikenaga, Hiroaki Kishioka
  • Publication number: 20150376477
    Abstract: Provided are an optical component having an excellent corrosion inhibition effect while achieving a high level of adhesion reliability and transparency, and pressure-sensitive adhesive composition and sheet that can produce such an optical component efficiently at a low cost. The pressure-sensitive adhesive composition according to the present invention includes a rust inhibitor, and a mixture of at least one monomer component for constituting a base polymer or a partially polymerized product of a mixture of at least one monomer component for constituting a base polymer. The monomer component includes no or substantially no acid group-containing monomer. The pressure-sensitive adhesive composition contains no or substantially no organic solvent. The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer formed from such pressure-sensitive adhesive composition.
    Type: Application
    Filed: January 28, 2014
    Publication date: December 31, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hirofumi Katami, Takahiro Nonaka, Hiroaki Kishioka
  • Patent number: 9223165
    Abstract: Provided is an optical unit for a display panel device with a capacitive touch input function. In the optical unit, a touch panel laminate comprises: an optically transparent first substrate layer laminated to one surface of a transparent adhesive layer; a first transparent electrically conductive layer laminated, through a first undercoat layer, to a surface of the first substrate layer on a side opposite to the adhesive layer; an optically transparent second substrate layer laminated to the other surface of the adhesive layer; and a second transparent electrically conductive layer laminated, through a second undercoat layer, to a surface of the second substrate layer on a side opposite side to the adhesive layer.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: December 29, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomotake Nashiki, Daisuke Kajihara, Hideo Sugawara, Tsuyoshi Chiba, Hiroaki Kishioka, Mayumi Kishioka, Tomohide Banba, Masahiro Ooura
  • Patent number: 9207482
    Abstract: A capacitive touch sensor laminate for use in a display panel device includes: a dielectric central substrate structure made of a transparent resin material and formed to have flat surfaces, respectively, on opposite sides thereof; a at least one-layer structured coat layer made of a transparent material, formed on each of the flat surfaces, and including at least one refractive index adjusting layer for suppressing visibility of an electrode pattern formed by the transparent electrically conductive layer; and a transparent electrically conductive layer formed on and in adjacent relation to the coat layer. The at least one-layer structured coat layers formed on respective ones of the flat surfaces are configured such that thicknesses of corresponding layers therein on respective opposite sides of the dielectric central substrate structure are set to allow the corresponding layers to become mutually symmetrical across the dielectric central substrate structure.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: December 8, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Tomotake Nashiki, Kazuhiro Nakajima, Hideo Sugawara, Tsuyoshi Chiba, Hiroaki Kishioka, Mayumi Kishioka, Tomohide Banba, Masahiro Ooura
  • Publication number: 20150197670
    Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.
    Type: Application
    Filed: March 26, 2015
    Publication date: July 16, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Koji SHITARA, Hiroko IKENAGA, Hiroaki KISHIOKA
  • Patent number: 9045670
    Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 2, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Koji Shitara, Hiroko Ikenaga, Hiroaki Kishioka
  • Patent number: 8945710
    Abstract: Provided is an optical pressure-sensitive adhesive sheet which excels in whitening resistance and high-temperature bonding reliability and exhibits superior bump absorptivity. The optical pressure-sensitive adhesive sheet according to the present invention includes an acrylic pressure-sensitive adhesive layer and has a moisture content of 0.65 percent by weight or more after storage in an environment of 60° C. and 95 percent relative humidity for 120 hours, in which the acrylic pressure-sensitive adhesive layer contains an acrylic polymer and has a storage shear modulus at 23° C. of from 0.8×105 to 5.0×105 Pa, and the acrylic polymer is formed from, as an essential monomer component, a monomer that will form a homopolymer having a glass transition temperature of ?10° C. or higher.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: February 3, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Hiroaki Kishioka, Hiroaki Fumoto, Masayuki Okamoto, Masahito Niwa
  • Publication number: 20140322440
    Abstract: A method for manufacturing an optical member includes forming a printed layer on one surface of a sheet substrate or flat-plate substrate. The method further includes coating one or more pressure-sensitive adhesives selected from the group consisting of a hot melt pressure-sensitive adhesive and an active energy-ray curable pressure-sensitive adhesive on a surface on a printed layer side of the sheet substrate or flat-plate substrate, and forming a pressure-sensitive adhesive layer of the pressure-sensitive adhesive.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro NONAKA, Hiroaki KISHIOKA, Hirofumi KATAMI
  • Publication number: 20140226085
    Abstract: Provided are an optical component having an excellent corrosion inhibition effect while maintaining a high level of adhesion reliability and transparency, as well as a pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet that can produce such an optical component efficiently and at a low cost. The pressure-sensitive adhesive composition according to the present invention includes a rust inhibitor and a base polymer, characterized in that the base polymer does not or substantially does not contain an acid group-containing monomer as a constituent monomer component. Further provided is a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed from such pressure-sensitive adhesive composition.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 14, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hirofumi Katami, Takahiro Nonaka, Hiroaki Kishioka
  • Publication number: 20140227502
    Abstract: Provided are an optical component capable of suppressing the occurrence of undulations, having an excellent corrosion inhibition effect while maintaining a high level of adhesion reliability and transparency, as well as a pressure-sensitive adhesive layer and a pressure-sensitive adhesive sheet that can produce such an optical component efficiently and at a low cost. The present invention provides an optical pressure-sensitive adhesive layer comprising a base polymer and a rust inhibitor, characterized in that the base polymer does not or substantially does not contain an acid group-containing monomer as a constituent monomer component, and that an 85° C. modulus of elasticity is not less than 5.0×104 Pa.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 14, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hirofumi Katami, Takahiro Nonaka, Hiroaki Kishioka
  • Patent number: 8691924
    Abstract: The present invention provides an optical-use pressure-sensitive adhesive sheet, which includes a pressure-sensitive adhesive layer containing a polymer formed of one or more monomer ingredients containing, as an indispensable monomer ingredient, a monomer of which homopolymer has a glass transition temperature of not lower than ?10° C., said sheet having a moisture content of at least 0.65% by weight after stored in an environment at 60° C. and 95% RH for 120 hours. The pressure-sensitive adhesive layer is preferably an acrylic pressure-sensitive adhesive layer.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 8, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Shou Takarada, Takahiro Nonaka, Hiroaki Kishioka, Hiroaki Fumoto, Tomohide Banba, Masayuki Okamoto, Masahito Niwa
  • Publication number: 20140044961
    Abstract: A pressure-sensitive adhesive capable of forming a pressure-sensitive adhesive layer with high transparency and low sebum-induced swelling rate is provided, which includes a (meth)acryl-based polymer obtained by polymerization of a monomer component containing 40 to 82% by weight of an alkyl(meth)acrylate having an alkyl group of 4 to 18 carbon atoms at the ester end and 18 to 35% by weight of a hydroxyl group-containing monomer.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshihito TAKAMI, Hirofumi KATAMI, Hiroaki KISHIOKA
  • Publication number: 20130323437
    Abstract: Provided is a pressure-sensitive adhesive sheet for optical use which less suffers from a misoperation-causing change in capacitance upon application to an optical member. The pressure-sensitive adhesive sheet for optical use includes a pressure-sensitive adhesive layer and has a dielectric constant of from 2 to 8 at a frequency of 1 MHz and a dielectric loss tangent of more than 0 and 0.2 or less at a frequency of 1 MHz. The pressure-sensitive adhesive sheet for optical use preferably has a dielectric constant at a frequency of 1.0×106 Hz being 60% or more of that at a frequency of 1.0×104 Hz. In addition, the pressure-sensitive adhesive sheet for optical use preferably has an absolute value of difference between the dielectric loss tangent at a frequency of 1.0×106 Hz and that at a frequency of 1.0×104 Hz of 0.15 or less.
    Type: Application
    Filed: August 8, 2013
    Publication date: December 5, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomohide Banba, Hiroaki Kishioka, Takahiro Nonaka, Masatomo Natsui, Hiroaki Fumoto, Shou Takarada, Takashi Suzuki
  • Patent number: 8551615
    Abstract: Disclosed is a pressure-sensitive adhesive composition which contains an acrylic polymer and a crosslinking agent. The acrylic polymer has a weight-average molecular weight of 40×104 to 160×104 and contains at least an alkoxyalkyl acrylate (Component A) and an acrylic monomer having a crosslinkable functional group (Component B). The monomer components constituting the acrylic polymer contain 45 to 99.5 parts by weight of Component A and 0.5 to 4.5 parts by weight of Component B to 100 parts by weight of total monomer components constituting the acrylic polymer, and the monomer components constituting the acrylic polymer contain substantially no carboxyl-containing monomers. This relates to improvements to provide pressure-sensitive adhesive compositions that show excellent coatability, transparency, adhesion (typically low-temperature adhesion), and resistance to blistering/separation and concurrently have anticorrosive properties.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: October 8, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Hiroaki Kishioka, Ryuuichi Kabutoya
  • Patent number: 8486524
    Abstract: The present invention relates to a double-sided pressure-sensitive adhesive tape comprising a nonwoven fabric as a support; one pressure-sensitive adhesive layer disposed on one side of the support; and another pressure-sensitive adhesive layer disposed on the other side of the support, wherein the nonwoven fabric consists of Manila hemp and is impregnated with carboxymethyl cellulose. The double-sided pressure-sensitive adhesive tape according to the invention can be produced with a high productivity, does not cause shrinkage wrinkles even when prepared by direct application, and has good blanking workability owing to its small elongation and excellent strength.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: July 16, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Hiroaki Kishioka, Katsunari Oji
  • Publication number: 20130005915
    Abstract: The present invention provides a pressure-sensitive adhesive composition excellent in the anti-foaming release property and high-temperature stress relaxation property, and a pressure-sensitive adhesive layer composed of the pressure-sensitive adhesive composition. The invention relates to a pressure-sensitive adhesive composition including an acrylic polymer which is formed from a monomer component including methyl methacrylate and has a glass transition temperature (Tg) of ?40° C. or more, wherein the pressure-sensitive adhesive composition has a shear storage elastic modulus at 85° C. as measured by a dynamic viscoelasticity measurement of from 1×104 to 3×105 Pa.
    Type: Application
    Filed: April 26, 2012
    Publication date: January 3, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi SUZUKI, Hiroaki KISHIOKA, Masatomo NATSUI
  • Publication number: 20120329970
    Abstract: Provided is an optical pressure-sensitive adhesive sheet which excels in whitening resistance and high-temperature bonding reliability and exhibits superior bump absorptivity. The optical pressure-sensitive adhesive sheet according to the present invention includes an acrylic pressure-sensitive adhesive layer and has a moisture content of 0.65 percent by weight or more after storage in an environment of 60° C. and 95 percent relative humidity for 120 hours, in which the acrylic pressure-sensitive adhesive layer contains an acrylic polymer and has a storage shear modulus at 23° C. of from 0.8×105 to 5.0×105 Pa, and the acrylic polymer is formed from, as an essential monomer component, a monomer that will form a homopolymer having a glass transition temperature of ?10° C. or higher.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 27, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroaki Kishioka, Hiroaki Fumoto, Masayuki Okamoto, Masahito Niwa