Patents by Inventor Takumi OOSHIMA

Takumi OOSHIMA 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: 20240145128
    Abstract: A multi-core cable includes two power wires, and a twisted pair signal wire having two twisted signal wires. The power wires and the twisted pair signal wire are twisted together to form a core, and the power wires include a first conductor, and a first insulating layer covering the first conductor. The signal wires include a second conductor, and a second insulating layer covering the second conductor, and a Young's modulus of the second insulating layer is greater than or equal to 700 MPa and less than or equal to 1600 M Pa.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 2, 2024
    Inventors: Takumi OOSHIMA, Jo YAGISAWA
  • Patent number: 11915843
    Abstract: A multicore cable includes a plurality of covered wires having a lubricant powder provided on surfaces thereof, and an outer sheath layer covering outer surfaces of the plurality of covered wires. The outer surfaces of the plurality of covered wires, and the outer sheath layer, make contact with one another via the lubricant powder. A coverage of the outer surfaces of the plurality of covered wires by the lubricant powder is greater than or equal to 15%.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: February 27, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hirotaka Kato, Jo Yagisawa, Takumi Ooshima, Takaya Kohori
  • Publication number: 20240062929
    Abstract: A cable includes a core including a plurality of electrical wires and a first resin layer configured to cover the core. The plurality of electrical wires is twisted together. The first resin layer includes a resin material and a filler. The content of the filler in the first resin layer is 10% by mass or more and 40% by mass or less. The filler is a chemical substance produced from a biological material.
    Type: Application
    Filed: August 1, 2023
    Publication date: February 22, 2024
    Inventors: Kenji HORI, Takumi OOSHIMA, Hirotaka KATO, Shunya TASHIRO, Wei FU
  • Publication number: 20230245799
    Abstract: A multicore cable includes a plurality of covered wires having a lubricant powder provided on surfaces thereof, and an outer sheath layer covering outer surfaces of the plurality of covered wires. The outer surfaces of the plurality of covered wires, and the outer sheath layer, make contact with one another via the lubricant powder. A coverage of the outer surfaces of the plurality of covered wires by the lubricant powder is greater than or equal to 15%.
    Type: Application
    Filed: January 10, 2023
    Publication date: August 3, 2023
    Inventors: Hirotaka KATO, Jo YAGISAWA, Takumi OOSHIMA, Takaya KOHORI
  • Publication number: 20230034227
    Abstract: An electrically insulated cable including: a core electric wire; and a covering layer covering the core electric wire; wherein: the core electric wire includes a plurality of insulated wires; the insulated wires each include a conductor and an insulating layer covering the conductor; and the covering layer contains a crosslinked polyethylene-based resin and a flame retardant in the front surface side thereof.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 2, 2023
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigeyuki TANAKA, Yutaka MATSUMURA, Taro FUJITA, Takumi OOSHIMA, Jo YAGISAWA
  • Publication number: 20220415539
    Abstract: A multicore cable includes a plurality of power lines, and an outer jacket covering the plurality of power lines, the power lines include one first conductor disposed at a center, and a plurality of second conductors disposed on an outer periphery of the first conductor, that are twisted together, the first conductor includes 10 or more and 100 or less twisted first element wires, the second conductor includes 10 or more and 100 or less twisted second element wires, a direction of lay of the first element wires of the first conductor, a direction of lay of the second element wires of the second conductor, and a direction of lay of the first conductor and the second conductors of the power line are the same, and a length of lay of the first element wires and a length of lay of the second element wires are greater than or equal to 8 mm and less than or equal to 22 mm.
    Type: Application
    Filed: December 6, 2019
    Publication date: December 29, 2022
    Inventors: Takumi OOSHIMA, Masayuki ISHIKAWA, Jo YAGISAWA
  • Publication number: 20220406487
    Abstract: An electrically insulated cable comprising: a core electric wire; a tape member covering the core electric wire; and a covering layer covering the tape member; wherein: the core electric wire includes a plurality of insulated electric wires; the insulated electric wires each include a conductor and an insulating layer covering the conductor; and the tape member has a minimum value of transmittance of 70% or more with respect to light having a wavelength of no less than 400 nm and no more than 800 nm.
    Type: Application
    Filed: August 3, 2020
    Publication date: December 22, 2022
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Shigeyuki TANAKA, Yutaka MATSUMURA, Taro FUJITA, Takumi OOSHIMA, Jo YAGISAWA
  • Patent number: 11443870
    Abstract: A composite cable includes an electric wire bundle, and an outer layer sheath covering the electric wire bundle. The electric wire bundle includes a one-core first electric wire, a one-core second electric wire, a two-core twisted pair electric wire, a one-core third electric wire, and one wire-like interposed material formed in the shape of a wire using a polymer. In the electric wire bundle, in a cross sectional view the twisted pair electric wire is disposed on one side of a centerline joining the center of the first electric wire and the center of the second electric wire, and the third electric wire and the wire-like interposed material are disposed on the other side of the centerline.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: September 13, 2022
    Assignees: SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kenta Kobayashi, Jo Yagisawa, Masayuki Ishikawa, Takumi Ooshima
  • Patent number: 11410792
    Abstract: A multicore cable includes: a plurality of coated electric wires; and an outer coating that covers an outer periphery of the plurality of coated electric wires, wherein the coated electric wires each includes a conductor and an insulating layer that covers the conductor, and wherein, in a range of 0.1 mm from an outer surface of the outer coating, a storage modules of the outer coating at ?30° C. is greater than or equal to 300 MPa and less than or equal to 500 MPa.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: August 9, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takumi Ooshima, Masayuki Ishikawa, Jo Yagisawa
  • Publication number: 20220238253
    Abstract: A core electric wire for a multicore cable that includes a conductor composed of a plurality of elemental wires twisted together and an insulating layer coating a circumference of the conductor, the insulating layer including a first component and a second component, the first component being high density polyethylene, the second component being at least one selected from the group consisting of a copolymer of ethylene and an ?-olefin having a carbonyl group, and very-low density polyethylene, the first component having a content ratio of 10% by mass or more and 60% by mass or less to a total content of the polyethylene-based resin, the second component having a content ratio of 20% by mass or more and 80% by mass or less to the total content of the polyethylene-based resin.
    Type: Application
    Filed: June 1, 2020
    Publication date: July 28, 2022
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Takumi OOSHIMA, Jo YAGISAWA
  • Publication number: 20220115164
    Abstract: A multicore cable includes: a plurality of coated electric wires; and an outer coating that covers an outer periphery of the plurality of coated electric wires, wherein the coated electric wires each includes a conductor and an insulating layer that covers the conductor, and wherein, in a range of 0.1 mm from an outer surface of the outer coating, a storage modules of the outer coating at ?30° C. is greater than or equal to 300 MPa and less than or equal to 500 MPa.
    Type: Application
    Filed: May 22, 2020
    Publication date: April 14, 2022
    Inventors: Takumi OOSHIMA, Masayuki ISHIKAWA, Jo YAGISAWA
  • Publication number: 20220028579
    Abstract: A composite cable includes a wire bundle and an outer layer sheath that covers the wire bundle. The wire bundle includes single-core first and second electric wires, a double-core twisted pair electric wire, and first, second, and third wire-shaped fillers. In a cross-sectional view, the wire bundle includes a wire unit in which the first and second wires and the twisted pair wire are arranged in contact with one another. In an imaginary circumscribed circle circumscribing the wire unit, the first wire-shaped filler is disposed in a first space between the first wire, the second wire, and the imaginary circumscribed circle, the second wire-shaped filler is disposed in a second space between the second wire, the twisted pair wire, and the imaginary circumscribed circle, and the third wire-shaped filler is disposed in a third space between the twisted pair wire, the first wire, and the imaginary circumscribed circle.
    Type: Application
    Filed: November 28, 2019
    Publication date: January 27, 2022
    Inventors: Kenta KOBAYASHI, Jo YAGISAWA, Masayuki ISHIKAWA, Takumi OOSHIMA
  • Publication number: 20220020510
    Abstract: A composite cable includes an electric wire bundle, and an outer layer sheath covering the electric wire bundle. The electric wire bundle includes a one-core first electric wire, a one-core second electric wire, a two-core twisted pair electric wire, a one-core third electric wire, and one wire-like interposed material formed in the shape of a wire using a polymer. In the electric wire bundle, in a cross sectional view the twisted pair electric wire is disposed on one side of a centerline joining the center of the first electric wire and the center of the second electric wire, and the third electric wire and the wire-like interposed material are disposed on the other side of the centerline.
    Type: Application
    Filed: November 28, 2019
    Publication date: January 20, 2022
    Inventors: Kenta KOBAYASHI, Jo YAGISAWA, Masayuki ISHIKAWA, Takumi OOSHIMA
  • 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: 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