Patents by Inventor Daisuke Yokoyama

Daisuke Yokoyama 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: 20230132997
    Abstract: A main object of the present disclosure is to provide a decorative sheet including a barrier layer having excellent solid fragrance resistance and close adhesiveness. The present disclosure achieves the object by providing a decorative sheet comprising at least a substrate sheet, a barrier layer, and a surface protecting layer in this order, wherein the barrier layer includes a vinyl alcohol based resin, and a polyurethane resin.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 4, 2023
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Daisuke Yokoyama, Kio Mizuno, Nahomi Kanazawa, Yoshinobu Omori, Hirokazu Kadono
  • Publication number: 20230133852
    Abstract: The present invention provides a decorative sheet which is provided with a relief pattern in the outer surface, while having excellent chemical resistance, wherein the relief pattern is suitably maintained even after molding. A decorative sheet which is provided with a relief pattern in the outer surface, while sequentially having, from the outer side, at least a first protective layer that constitutes the relief pattern and a second protective layer. The first protective layer is formed of a cured product of a resin composition that contains an ionizing radiation curable resin and a thermoplastic resin; and the second protective layer is formed of a cured product of an ionizing radiation curable resin composition that contains a polycarbonate (meth)acrylate.
    Type: Application
    Filed: March 31, 2020
    Publication date: May 4, 2023
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroaki Nakayama, Nobuo Saitou, Minoru Ariyama, Yoshiyuki Meiki, Sakie Kataoka, Kenta Takayama, Daisuke Yokoyama
  • Patent number: 11469377
    Abstract: To provide a composition having a very low refractive index, an organic photoelectronic element using the composition, and simple methods for producing such a composition and an organic photoelectronic element. A composition comprising a fluorinated polymer, an organic semiconductor material and a dopant.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: October 11, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY, AGC Inc.
    Inventors: Daisuke Yokoyama, Takefumi Abe, Yasuhiro Kuwana
  • Patent number: 11437596
    Abstract: To provide an organic photoelectronic element excellent in light emitting characteristics and long-term reliability. The organic photoelectronic element comprises a substrate, an anode provided on the substrate, a cathode facing the anode, a light emitting layer disposed between the anode and the cathode, a hole transport layer disposed between the light emitting layer and the anode, and an electron blocking layer provided in contact with the light emitting layer and the hole transport layer between the light emitting layer and the hole transport layer, wherein the hole transport layer contains a fluorinated polymer and an organic semiconductor material, and has a refractive index in the wavelength range of from 450 nm to 800 nm, of at most 1.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: September 6, 2022
    Assignees: AGC Inc., National University Corporation Yamagata University
    Inventors: Shigeki Hattori, Takefumi Abe, Kaori Tsuruoka, Yasuhiro Kuwana, Daisuke Yokoyama
  • Publication number: 20220268763
    Abstract: Disclosed is a hemolytic reagent comprising a nonionic surfactant represented by formula (I) below: R1—R2—(CH2CH2O)n—H ??(I) where R1 represents an alkyl group, an alkenyl group, or an alkynyl group having 8 or more and 25 or less carbon atoms, R2 represents an oxygen atom, (COO) or a group represented by formula (II) below: where n is 23 or larger and 25 or smaller, or 30, with n of 23 or larger and 25 or smaller, a concentration of the nonionic surfactant is 1700 ppm or higher and 2300 ppm or lower, and with n of 30, the concentration of the nonionic surfactant is 1900 ppm or higher and 2300 ppm or lower.
    Type: Application
    Filed: February 15, 2022
    Publication date: August 25, 2022
    Applicant: Sysmex Corporation
    Inventors: Yuki SHIDA, Takanori KOMAKI, Daisuke Yokoyama, Masaki Abe
  • Patent number: 11355734
    Abstract: To provide an organic photoelectronic element, of which the external quantum efficiency is improved, the power consumption is low and the service life is prolonged. The organic photoelectronic element comprises a substrate, an anode provided on the substrate, a cathode facing the anode, a light emitting layer disposed between the anode and the cathode, and a hole transport layer provided in contact with the light emitting layer between the light emitting layer and the anode, wherein the hole transport layer contains an organic semiconductor material and a fluorinated polymer, and at the surface of the hole transport layer in contact with the light emitting layer, the fluorinated polymer is present.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: June 7, 2022
    Assignees: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi Abe, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10892418
    Abstract: To provide a charge injection layer in which the refractive index is sufficiently low and unbalance in the composition of materials is less likely to occur, and a method for its production as well as an organic photoelectronic element and a method for its production. The charge injection layer contains a fluorinated polymer and a semiconductor material, and has a refractive index in the wavelength range of from 450 to 800 nm, of at most 1.60.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: January 12, 2021
    Assignees: AGC Inc., National University Corporation Yamagata University
    Inventors: Shigeki Hattori, Takefumi Abe, Kaori Tsuruoka, Yasuhiro Kuwana, Daisuke Yokoyama
  • Patent number: 10879468
    Abstract: To provide a layer such as a charge transport layer having a refractive index significantly lowered without impairing electrical conductivity and surface roughness, and a method for producing it. A deposited film composition obtained by co-depositing a fluorinated polymer having a saturated vapor pressure at 300° C. of at least 0.001 Pa and an organic semiconductor material.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: December 29, 2020
    Assignees: National University Corporation Yamagata University, AGC Inc.
    Inventors: Daisuke Yokoyama, Takefumi Abe, Yasuhiro Kuwana
  • Publication number: 20200176678
    Abstract: To provide a charge injection layer in which the refractive index is sufficiently low and unbalance in the composition of materials is less likely to occur, and a method for its production as well as an organic photoelectronic element and a method for its production. The charge injection layer contains a fluorinated polymer and a semiconductor material, and has a refractive index in the wavelength range of from 450 to 800 nm, of at most 1.60.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 4, 2020
    Applicants: AGC Inc., National University Corporation Yamagata University
    Inventors: Shigeki HATTORI, Takefumi ABE, Kaori TSURUOKA, Yasuhiro KUWANA, Daisuke YOKOYAMA
  • Publication number: 20200176715
    Abstract: To provide an organic photoelectronic element, of which the external quantum efficiency is improved, the power consumption is low and the service life is prolonged. The organic photoelectronic element comprises a substrate, an anode provided on the substrate, a cathode facing the anode, a light emitting layer disposed between the anode and the cathode, and a hole transport layer provided in contact with the light emitting layer between the light emitting layer and the anode, wherein the hole transport layer contains an organic semiconductor material and a fluorinated polymer, and at the surface of the hole transport layer in contact with the light emitting layer, the fluorinated polymer is present.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 4, 2020
    Applicants: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi ABE, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10674573
    Abstract: An organic light emitting diode comprises a hole transport layer, an emissive layer, and an electron transport layer. The hole transport layer and optionally the electron transport layer is made of a material having a refractive index having a specific anisotropy.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: June 2, 2020
    Assignee: UNIVERSITEIT GENT
    Inventors: Kristiaan Neyts, Michiel Callens, Daisuke Yokoyama
  • Publication number: 20200168829
    Abstract: To provide an organic photoelectronic element excellent in light emitting characteristics and long-term reliability. The organic photoelectronic element comprises a substrate, an anode provided on the substrate, a cathode facing the anode, a light emitting layer disposed between the anode and the cathode, a hole transport layer disposed between the light emitting layer and the anode, and an electron blocking layer provided in contact with the light emitting layer and the hole transport layer between the light emitting layer and the hole transport layer, wherein the hole transport layer contains a fluorinated polymer and an organic semiconductor material, and has a refractive index in the wavelength range of from 450 nm to 800 nm, of at most 1.
    Type: Application
    Filed: February 3, 2020
    Publication date: May 28, 2020
    Applicants: AGC Inc., National University Corporation Yamagata University
    Inventors: Shigeki HATTORI, Takefumi ABE, Kaori TSURUOKA, Yasuhiro KUWANA, Daisuke YOKOYAMA
  • Patent number: 10608183
    Abstract: To provide a charge transport layer excellent in the external quantum efficiency, and an organic photoelectronic element comprising the charge transport layer. A charge transport layer comprising a film containing a fluorinated polymer and a semiconductor material, wherein the film has a material composition such that ?Eth is within a range of from 0.010 to 0.080 MV/cm. An organic photoelectronic element comprising the charge transport layer.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: March 31, 2020
    Assignees: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi Abe, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10541630
    Abstract: A manufacturing method of a vibrator includes processing a tip of a contact part arranged on an elastic body of the vibrator by lapping or grinding processing so that part of the tip has a plane shape in part of a spherical shape.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yokoyama
  • Publication number: 20190312202
    Abstract: To provide a composition having a very low refractive index, an organic photoelectronic element using the composition, and simple methods for producing such a composition and an organic photoelectronic element. A composition comprising a fluorinated polymer, an organic semiconductor material and a dopant.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Applicants: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY, AGC Inc.
    Inventors: Daisuke YOKOYAMA, Takefumi ABE, Yasuhiro KUWANA
  • Publication number: 20190305226
    Abstract: To provide a layer such as a charge transport layer having a refractive index significantly lowered without impairing electrical conductivity and surface roughness, and a method for producing it. A deposited film composition obtained by co-depositing a fluorinated polymer having a saturated vapor pressure at 300° C. of at least 0.001 Pa and an organic semiconductor material.
    Type: Application
    Filed: June 4, 2019
    Publication date: October 3, 2019
    Applicants: National University Corporation Yamagata University, AGC Inc.
    Inventors: Daisuke YOKOYAMA, Takefumi ABE, Yasuhiro KUWANA
  • Publication number: 20190288205
    Abstract: To provide a charge transport layer excellent in the external quantum efficiency, and an organic photoelectronic element comprising the charge transport layer. A charge transport layer comprising a film containing a fluorinated polymer and a semiconductor material, wherein the film has a material composition such that ?Eth is within a range of from 0.010 to 0.080 MV/cm. An organic photoelectronic element comprising the charge transport layer.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Applicants: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi ABE, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10381566
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 13, 2019
    Assignee: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke Yokoyama, Yasutaka Suzuki, Wataru Aita
  • Patent number: 10328652
    Abstract: The strip-winding method, includes: a first step of supplying a strip to a wound body including an inclined part; and a second step of moving a winding roller along an outer circumferential surface of the wound body within one plane, the winding roller being capable of pressing the strip on the wound body, and of winding the strip on the outer circumferential surface of the wound body. In the second step, the roller inclination angle of the rotational axis line of the winding roller with respect to the one plane is changed, and the roller inclination angle at the time the strip is wound around the inclined part is set to be greater than the roller inclination angle at the time the strip is wound around a maximum diameter position of the wound body.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: June 25, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yuusuke Araki, Masamu Ishizuki, Daisuke Yokoyama
  • Publication number: 20180366650
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 20, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke YOKOYAMA, Yasutaka SUZUKI, Wataru AITA