Patents by Inventor Nayu YANAGAWA

Nayu YANAGAWA 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: 20210163728
    Abstract: According to one aspect of the present invention, a resin composition for an insulating layer includes: an olefinic resin as a main component; and a metal deactivator, wherein a content of the metal deactivator exceeds 0.05% by mass, and wherein a melting point of the metal deactivator is greater than or equal to 200° C.
    Type: Application
    Filed: March 11, 2019
    Publication date: June 3, 2021
    Inventors: Syota MACHINAKA, Taro FUJITA, Shigeyuki TANAKA, Nayu YANAGAWA, Yuji OCHI, Satoshi OKANO, Yuto KOBAYASHI
  • Patent number: 10845556
    Abstract: An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm2 or more in a cross section of the optical fiber cable.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 24, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki Sato, Taro Fujita, Nayu Yanagawa, Yoshiaki Nagao, Nobuyuki Suzuki
  • Patent number: 10804009
    Abstract: A twinax cable 100 includes a twinax structure, the twinax structure including: a signal wire pair, the signal wire pair including a pair of signal wires formed of a first signal wire and a second signal wire, and an insulating layer configured to cover the pair of signal wires; a drain wire; and a shield tape arranged on the outer circumferential side of the insulating layer to cover the signal wire pair and the drain wire. The insulating layer is mainly composed of polyethylene. The insulating layer includes not less than 30 ppm and not more than 4000 ppm of a hindered phenol-based antioxidant. A dielectric tangent tan ? of the insulating layer at the time of application of a high-frequency electric field having a frequency of 10 GHz is not more than 3.0×10?4.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: October 13, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nayu Yanagawa, Shinya Nishikawa, Taro Fujita, Yuto Kobayashi, Masaki Hayakawa, Atsushi Tsujino, Yuji Ochi
  • Publication number: 20200277495
    Abstract: A weather-resistant flame-retardant resin composition includes: a polyolefin resin; a mixture of (poly) phosphate compounds, a total content of which is from 10 to 50 parts by mass with respect to 100 parts by mass of the polyolefin resin; 0.1 to 10 parts by mass a non-crosslinked silicone raw rubber having a number-average molecular weight of 10,000 to 1,000,000; and 0.1 to 20 parts by mass of an inorganic UV light shielding agent, and an electric wire and an optical fiber cable whose jacket is formed by the weather-resistant flame-retardant resin.
    Type: Application
    Filed: September 21, 2018
    Publication date: September 3, 2020
    Inventors: Taro FUJITA, Shinya NISHIKAWA, Nayu YANAGAWA, Yoshiaki NAGAO, Masakazu TAKAMI, Kenta TSUCHIYA
  • Patent number: 10703889
    Abstract: An insulated electric wire includes a conductor and an insulating layer covering an outer periphery of the conductor. The insulating layer is formed of a crosslinked polymer of an insulating resin composition that contains a resin component containing a first copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of less than 0.88 g/cm3, a second copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of 0.88 g/cm3 or more and less than 0.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: July 7, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Nayu Yanagawa, Shigeyuki Tanaka, Taro Fujita, Shinya Nishikawa, Takumi Ooshima, Hiroyuki Okawa
  • Publication number: 20200183111
    Abstract: An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm2 or more in a cross section of the optical fiber cable.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 11, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki SATO, Taro FUJITA, Nayu YANAGAWA, Yoshiaki NAGAO, Nobuyuki SUZUKI
  • Publication number: 20190172610
    Abstract: A twinax cable 100 includes a twinax structure, the twinax structure including: a signal wire pair, the signal wire pair including a pair of signal wires formed of a first signal wire and a second signal wire, and an insulating layer configured to cover the pair of signal wires; a drain wire; and a shield tape arranged on the outer circumferential side of the insulating layer to cover the signal wire pair and the drain wire. The insulating layer is mainly composed of polyethylene. The insulating layer includes not less than 30 ppm and not more than 4000 ppm of a hindered phenol-based antioxidant. A dielectric tangent tan ? of the insulating layer at the time of application of a high-frequency electric field having a frequency of 10 GHz is not more than 3.0×10?4.
    Type: Application
    Filed: June 20, 2018
    Publication date: June 6, 2019
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nayu YANAGAWA, Shinya NISHIKAWA, Taro FUJITA, Yuto KOBAYASHI, Masaki HAYAKAWA, Atsushi TSUJINO, Yuji OCHI
  • Publication number: 20180371221
    Abstract: An insulated electric wire includes a conductor and an insulating layer covering an outer periphery of the conductor. The insulating layer is formed of a crosslinked polymer of an insulating resin composition that contains a resin component containing a first copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of less than 0.88 g/cm3, a second copolymer which is a copolymer of ethylene and an unsaturated hydrocarbon having 4 or more carbon atoms and which has a density of 0.88 g/cm3 or more and less than 0.
    Type: Application
    Filed: October 4, 2017
    Publication date: December 27, 2018
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nayu YANAGAWA, Shigeyuki TANAKA, Taro FUJITA, Shinya NISHIKAWA, Takumi OOSHIMA, Hiroyuki OKAWA