Patents by Inventor Takashi Yamaoka

Takashi Yamaoka 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: 11913136
    Abstract: In various embodiments, controlled heating and/or cooling conditions are utilized during the fabrication of aluminum nitride single crystals and aluminum nitride bulk polycrystalline ceramics. Thermal treatments may also be utilized to control properties of aluminum nitride crystals after fabrication.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: February 27, 2024
    Assignee: CRYSTAL IS, INC.
    Inventors: Robert T. Bondokov, Jianfeng Chen, Keisuke Yamaoka, Shichao Wang, Shailaja P. Rao, Takashi Suzuki, Leo J. Schowalter
  • Patent number: 11260627
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: March 1, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Patent number: 10221090
    Abstract: The present invention provides a transparent substrate that significantly prevents the progress of a crack in a thin-plate glass and the rupture of the glass, and is excellent in bending property and flexibility. A transparent substrate according to an embodiment of the present invention includes: a thin-plate glass having a thickness of 10 ?m to 100 ?m; and a resin layer on at least one side of the thin-plate glass, wherein a shrinkage stress of the resin layer on the thin-plate glass is 5 MPa or more.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: March 5, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20190008043
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: September 5, 2018
    Publication date: January 3, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Publication number: 20180368256
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: August 17, 2018
    Publication date: December 20, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Publication number: 20180228002
    Abstract: There is provided a transparent substrate which is excellent in dimensional stability, which significantly prevents the progress of a crack in an inorganic glass and the rupture of the inorganic glass, and which is excellent in flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass having a thickness of 10 ?m to 100 ?m; and a resin layer on one side, or each of both sides, of the inorganic glass, wherein: a ratio of a total thickness of the resin layer to a thickness of the inorganic glass is 0.9 to 4; the resin layer has a modulus of elasticity at 25° C. of 1.5 GPa to 10 GPa; and the resin layer has a fracture toughness value at 25° C. of 1.5 MPa·m1/2 to 10 MPa·m1/2.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 9, 2018
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Patent number: 9916048
    Abstract: An input display device includes a liquid crystal layer containing liquid crystal molecules that are homogeneously aligned in an absence of an electric field, a first polarizer disposed on a viewing side of the liquid crystal layer, a capacitive sensor disposed between the first polarizer and the liquid crystal layer, and an antistatic layer disposed between the first polarizer and the capacitive sensor, the antistatic layer being attached to the first polarizer. The capacitive sensor has a transparent substrate, a transparent electrode pattern formed on the transparent substrate, and a first adhesive layer formed on the transparent substrate to embed the transparent electrode pattern, and the antistatic layer has a surface resistance value of 1.0×109 to 1.0×1011?/?.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: March 13, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kuniaki Ishibashi, Akiko Sugino, Tsuyoshi Chiba, Masakuni Fujita, Takashi Yamaoka
  • Publication number: 20160120029
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Patent number: 9140736
    Abstract: A film sensor includes a polarizing film, an antistatic layer and a capacitive sensor that are laminated in this order, the capacitive sensor having a transparent film, a transparent electrode pattern formed on one side of the transparent film, and an adhesive layer formed on the one side of the transparent film to embed the transparent electrode pattern. The transparent film is disposed between the antistatic layer and the transparent electrode pattern. The antistatic layer has a surface resistance value of 1.0×109 to 1.0×1011?/?.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 22, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kuniaki Ishibashi, Akiko Sugino, Tsuyoshi Chiba, Masakuni Fujita, Takashi Yamaoka
  • Patent number: 9057747
    Abstract: A film sensor includes a polarizing film, an antistatic layer and a capacitive sensor that are laminated in this order, the capacitive sensor having a transparent film, a transparent electrode pattern formed on one side of the transparent film, and an adhesive layer formed on the one side of the transparent film to embed the transparent electrode pattern. The transparent film is disposed between the antistatic layer and the transparent electrode pattern. The antistatic layer has a surface resistance value of 1.0×109 to 1.0×1011?/?.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: June 16, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kuniaki Ishibashi, Akiko Sugino, Tsuyoshi Chiba, Masakuni Fujita, Takashi Yamaoka
  • Patent number: 8911869
    Abstract: The present invention provides a transparent substrate excellent in solvent crack resistance, toughness, heat resistance, and flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a first resin layer placed on at least one side of the inorganic glass, wherein: the first resin layer contains a resin compound having a weight-average molecular weight in terms of polystyrene of 8×104 to 100×104; and no solvent crack occurs when a mixed solvent containing 20 wt % to 95 wt % of at least one kind of solvent selected from the group consisting of acetone, N-methylpyrrolidone, dimethyl sulfoxide, and N,N-dimethylformamide is brought into contact with the substrate.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 16, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Daisuke Hattori, Toshiyuki Iida, Takeshi Murashige, Takashi Yamaoka, Tatsuki Nagatsuka
  • Patent number: 8409884
    Abstract: The process for producing an organic EL panel according to the present invention is a process for producing an organic electroluminescent panel by forming an organic electroluminescent element on an ultrathin glass plate by vacuum deposition method, including forming electrodes on the ultrathin glass plate, by temporarily fixing the ultrathin glass plate to a supporting plate via a double-sided adhesive tape having a thermal release adhesive layer formed at least on one face of the base material layer, containing heat-expandable microspheres that start expansion and/or foaming at temperature higher than the vacuum deposition temperature.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 2, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Takamasa Hirayama, Akihisa Murata, Yukio Arimitsu, Takashi Yamaoka, Masaaki Sato
  • Publication number: 20120202074
    Abstract: The present invention provides a transparent substrate excellent in solvent crack resistance, toughness, heat resistance, and flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a first resin layer placed on at least one side of the inorganic glass, wherein: the first resin layer contains a resin compound having a weight-average molecular weight in terms of polystyrene of 8×104 to 100×104; and no solvent crack occurs when a mixed solvent containing 20 wt % to 95 wt % of at least one kind of solvent selected from the group consisting of acetone, N-methylpyrrolidone, dimethyl sulfoxide, and N,N-dimethylformamide is brought into contact with the substrate.
    Type: Application
    Filed: October 20, 2010
    Publication date: August 9, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Toshiyuki Iida, Takeshi Murashige, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20120196103
    Abstract: The present invention provides a transparent substrate that significantly prevents the progress of a crack in a thin-plate glass and the rupture of the glass, and is excellent in bending property and flexibility. A transparent substrate according to an embodiment of the present invention includes: a thin-plate glass having a thickness of 10 ?m to 100 ?m; and a resin layer on at least one side of the thin-plate glass, wherein a shrinkage stress of the resin layer on the thin-plate glass is 5 MPa or more.
    Type: Application
    Filed: August 3, 2010
    Publication date: August 2, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20110244225
    Abstract: There is provided a transparent substrate which can be reduced in thickness, which is excellent in adhesiveness between an inorganic glass and a resin layer under a high-temperature and high-humidity environment, bending property, flexibility, and impact resistance, and which significantly prevents the progress of a crack in a glass. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass; and a resin layer, which is obtained by applying a solution of a thermoplastic resin onto one side or both sides of the inorganic glass, wherein: the solution comprises a first thermoplastic resin having a hydroxy group at a terminal; the inorganic glass and the resin layer comprise an epoxy group-terminated coupling agent layer therebetween; the coupling agent layer is directly formed on the inorganic glass; and the resin layer is directly formed on the coupling agent layer.
    Type: Application
    Filed: November 4, 2009
    Publication date: October 6, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Takeshi Murashige, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20110124136
    Abstract: Provided is a process for producing an organic EL panel by using an ultrathin glass plate, in which the ultrathin glass plate is not “fractured” or “cut” in the production process, the organic EL element is formed reliably when formed by vacuum deposition, and recovered without damage after the production process, and there is no need for installing an additional step of cleaning the rear face of the ultrathin glass plate.
    Type: Application
    Filed: June 30, 2009
    Publication date: May 26, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takamasa Hirayama, Akihisa Murata, Yukio Arimitsu, Takashi Yamaoka, Masaaki Sato
  • Publication number: 20110114160
    Abstract: There is provided a transparent substrate which is excellent in dimensional stability, which significantly prevents the progress of a crack in an inorganic glass and the rupture of the inorganic glass, and which is excellent in flexibility. A transparent substrate according to an embodiment of the present invention includes: an inorganic glass having a thickness of 10 ?m to 100 ?m; and a resin layer on one side, or each of both sides, of the inorganic glass, wherein: a ratio of a total thickness of the resin layer to a thickness of the inorganic glass is 0.9 to 4; the resin layer has a modulus of elasticity at 25° C. of 1.5 GPa to 10 GPa; and the resin layer has a fracture toughness value at 25° C. of 1.5 MPa·m1/2 to 10 MPa·m1/2.
    Type: Application
    Filed: April 17, 2009
    Publication date: May 19, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Daisuke Hattori, Yoshimasa Sakata, Takashi Yamaoka, Tatsuki Nagatsuka
  • Publication number: 20110039097
    Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.
    Type: Application
    Filed: April 17, 2009
    Publication date: February 17, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takeshi Murashige, Takashi Yamaoka, Daisuke Hattori, Yoshimasa Sakata, Tatsuki Nagatsuka
  • Patent number: 7671949
    Abstract: A polarizing plate with optical compensation function, including a polarizing layer and an optically compensating layer, wherein the optically compensating layer includes an optically compensating A-layer including a stretched polymer film and an optically compensating B-layer including a cholesteric liquid crystal layer.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: March 2, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Shinichi Sasaki, Takashi Yamaoka, Nao Murakami, Hiroyuki Yoshimi
  • Patent number: RE41679
    Abstract: A wide viewing angle polarizer having: a polarizing film; and a phase retarder adhesively laminated on at least one surface of the polarizing film through an adhesive layer, the phase retarder being made of a composite phase retarder constituted by a laminate in which a retardation layer B of a cholesteric liquid crystal-oriented solidified layer in a selective reflection wavelength range of not larger than 350 nm is supported by a retardation layer A of a thermoplastic resin exhibiting positive birefringence, the composite phase retarder being formed so that the laminate has Re of not smaller than 10 nm and Rth?Re of not smaller than 50 nm when Re and Rth are defined as Re=(nx?ny)X d and Rth=(nx?nz)X d respectively in which nx and ny are in-plane main refractive indices, nz is a thicknesswise refractive index, and d is a layer thickness.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: September 14, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Shinichi Sasaki, Takashi Yamaoka, Nao Murakami, Hiroyuki Yoshimi