Patents by Inventor Hisao Okumura

Hisao Okumura 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: 20230173731
    Abstract: The invention provides a flame-retardant biaxially-oriented polyester film which is porous, and has high reflectance. The flame-retardant biaxially-oriented polyester film contains a polymer component containing polyethylene terephthalate and a flame retardant. The polyester film has an intrinsic viscosity of 0.50 to 0.64 dL/g and a density of 1.21 to 1.27 g/cm3. A content of the polyethylene terephthalate in the polyester film is 70 to 97% by mass. The flame retardant contains at least one phosphorus-based flame retardant selected from the group consisting of a phosphinate and a diphosphinate. A content of the phosphorus-based flame retardant in the polyester film is 3 to 8% by mass. The polyester film is a porous film having an average reflectance of 60 to 74% at a wavelength of 400 to 700 nm. The polyester film has a thickness of 15 to 45 ?m.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 8, 2023
    Applicant: TOYOBO CO., LTD.
    Inventor: Hisao OKUMURA
  • Publication number: 20220340781
    Abstract: The invention provides an assembly for fuel cell which has an excellent adhesive force in the presence of hot water, and a laminated body which is used for the assembly for fuel cell. The assembly for fuel cell comprises an adhesive resin layer containing a polyolefin having at least one group selected from the group consisting of an acidic group and an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g; and two or more members bonded with the adhesive resin layer interposed therebetween, wherein at least one of the members is a metal member having a ratio of a dipole term in surface free energy of 0.01% to 5.0%.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 27, 2022
    Applicants: TOYOBO CO., LTD., TOAGOSEI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya WATANABE, Ai KOGANEMARU, Hisao OKUMURA, Tomoya SUGIKI, Takahiro ITO, Makoto IMAHORI, Yusuke SHIMMYO, Kenji SATO, Takuya KURIHARA
  • Publication number: 20220332984
    Abstract: An object of the present invention is to provide an adhesive composition having an excellent adhesive force even in the presence of hot water in an assembly in which at least one of two or more members to be bonded to each other via the adhesive composition is a low-polarity metal member, and an adhesion method. The present invention relates to an adhesive composition and an adhesion method for bonding a metal member. The adhesive composition contains a polyolefin (A) component having an acidic group and/or an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g. The metal member has a ratio of a dipole term in surface free energy of 0.01% to 5.0%.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 20, 2022
    Applicants: TOAGOSEI CO., LTD., TOYOBO CO., LTD.
    Inventors: Tomoya SUGIKI, Takahiro ITO, Makoto IMAHORI, Shinya WATANABE, Ai KOGANEMARU, Hisao OKUMURA
  • Publication number: 20220332980
    Abstract: The invention provides a laminated body having an excellent adhesive force with respect to a low-polarity metal member in the presence of hot water. The laminated body contains a resin substrate; an easily adhesive layer provided on at least one surface of the resin substrate; and an adhesive resin layer provided on a surface of the easily adhesive layer on a side opposite to the resin substrate, wherein the adhesive resin layer contains a polyolefin having at least one group selected from the group consisting of an acidic group and an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g; and the laminated body is used for bonding a metal member having a ratio of a dipole term in surface free energy of 0.01% to 5.0%.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 20, 2022
    Applicants: TOYOBO CO., LTD., TOAGOSEI CO., LTD.
    Inventors: Shinya WATANABE, Ai KOGANEMARU, Hisao OKUMURA, Tomoya SUGIKI, Takahiro ITO, Makoto IMAHORI
  • Patent number: 11291167
    Abstract: The agricultural greenhouse of the invention and the plant cultivation method using the same can cultivate plants economically and efficiently with less energy per crop yield, as it is provided with a CO2 supply means, a heat-ray shielding means, and a dehumidification and cooling means, the heat-ray shielding means is formed of using a heat-ray reflecting film, and plural through holes are formed in the heat-ray shielding means. The heat-ray reflecting film structure can cultivate plants by the agricultural greenhouse utilizing sunlight economically and efficiently as it has a structure that narrow band-shaped tapes obtained by cutting a multi-layer laminated film made by laminating at least two kinds of resin layers with different refractive indices alternately and having an average transmittance at 80% or more for visible light and an average reflectance at 70% or more for heat-ray is woven or knitted as a warp or a weft.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: April 5, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Hisao Okumura, Yutaka Kobayashi
  • Publication number: 20210345558
    Abstract: The agricultural greenhouse of the invention and the plant cultivation method using the same can cultivate plants economically and efficiently with less energy per crop yield, as it is provided with a CO2 supply means, a heat-ray shielding means, and a dehumidification and cooling means, the heat-ray shielding means is formed of using a heat-ray reflecting film, and plural through holes are formed in the heat-ray shielding means. The heat-ray reflecting film structure can cultivate plants by the agricultural greenhouse utilizing sunlight economically and efficiently as it has a structure that narrow band-shaped tapes obtained by cutting a multi-layer laminated film made by laminating at least two kinds of resin layers with different refractive indices alternately and having an average transmittance at 80% or more for visible light and an average reflectance at 70% or more for heat-ray is woven or knitted as a warp or a weft.
    Type: Application
    Filed: July 26, 2021
    Publication date: November 11, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Hisao OKUMURA, Yutaka KOBAYASHI
  • Publication number: 20210195851
    Abstract: The agricultural greenhouse of the invention and the plant cultivation method using the same can cultivate plants economically and efficiently with less energy per crop yield, as it is provided with a CO2 supply means, a heat-ray shielding means, and a dehumidification and cooling means, the heat-ray shielding means is formed of using a heat-ray reflecting film, and plural through holes are formed in the heat-ray shielding means. The heat-ray reflecting film structure can cultivate plants by the agricultural greenhouse utilizing sunlight economically and efficiently as it has a structure that narrow band-shaped tapes obtained by cutting a multi-layer laminated film made by laminating at least two kinds of resin layers with different refractive indices alternately and having an average transmittance at 80% or more for visible light and an average reflectance at 70% or more for heat-ray is woven or knitted as a warp or a weft.
    Type: Application
    Filed: February 13, 2017
    Publication date: July 1, 2021
    Applicant: TEIJIN FILM SOLUTIONS LIMITED
    Inventors: Hisao OKUMURA, Yutaka KOBAYASHI
  • Patent number: 8028509
    Abstract: The polyethylene naphthalate fiber for industrial material having a low fatigue in a composite is a polyethylene naphthalate fiber for industrial material containing an ethylene-2,6-naphthalate unit in 80% or more, characterize by having a strength of 6 cN/dtex or more and a secondary yield point elongation degree of 8% or less. The production method thereof is a method for producing a fiber in which a fiber having been obtained by melt-spinning a polyethylene naphthalate is subjected to stretching, characterized in that prestretch satisfying such conditions as the fiber temperature of from 80° C. to 120° C. and from 0.05 to 0.3 N/dtex is performed, a first stretch satisfying such conditions as the fiber temperature of from 130° C. to 180° C. and stretch tensile force of not more than the prestretch tensile force is performed, the total stretch magnification including subsequent stretches is set to 5 or more, and finally heat-treatment under tension with a stretch ratio of from 0 to 2% is performed.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: October 4, 2011
    Assignee: Teijin Fibers Limted
    Inventors: Hisao Okumura, Fuyuki Terasaka
  • Publication number: 20100101202
    Abstract: The polyethylene naphthalate fiber for industrial material having a low fatigue in a composite is a polyethylene naphthalate fiber for industrial material containing an ethylene-2,6-naphthalate unit in 80% or more, characterize by having a strength of 6 cN/dtex or more and a secondary yield point elongation degree of 8% or less. The production method thereof is a method for producing a fiber in which a fiber having been obtained by melt-spinning a polyethylene naphthalate is subjected to stretching, characterized in that prestretch satisfying such conditions as the fiber temperature of from 80° C. to 120° C. and from 0.05 to 0.3 N/dtex is performed, a first stretch satisfying such conditions as the fiber temperature of from 130° C. to 180° C. and stretch tensile force of not more than the prestretch tensile force is performed, the total stretch magnification including subsequent stretches is set to 5 or more, and finally heat-treatment under tension with a stretch ratio of from 0 to 2% is performed.
    Type: Application
    Filed: February 20, 2008
    Publication date: April 29, 2010
    Applicant: TEIJIN FIBERS LIMITED
    Inventors: Hisao Okumura, Fuyuki Terasaka