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).
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Publication number: 20240145128Abstract: 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: ApplicationFiled: March 19, 2021Publication date: May 2, 2024Inventors: Takumi OOSHIMA, Jo YAGISAWA
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Patent number: 11915843Abstract: 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: GrantFiled: January 10, 2023Date of Patent: February 27, 2024Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hirotaka Kato, Jo Yagisawa, Takumi Ooshima, Takaya Kohori
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Publication number: 20240062929Abstract: 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: ApplicationFiled: August 1, 2023Publication date: February 22, 2024Inventors: Kenji HORI, Takumi OOSHIMA, Hirotaka KATO, Shunya TASHIRO, Wei FU
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Publication number: 20230245799Abstract: 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: ApplicationFiled: January 10, 2023Publication date: August 3, 2023Inventors: Hirotaka KATO, Jo YAGISAWA, Takumi OOSHIMA, Takaya KOHORI
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Publication number: 20230034227Abstract: 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: ApplicationFiled: October 30, 2019Publication date: February 2, 2023Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Shigeyuki TANAKA, Yutaka MATSUMURA, Taro FUJITA, Takumi OOSHIMA, Jo YAGISAWA
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Publication number: 20220415539Abstract: 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: ApplicationFiled: December 6, 2019Publication date: December 29, 2022Inventors: Takumi OOSHIMA, Masayuki ISHIKAWA, Jo YAGISAWA
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Publication number: 20220406487Abstract: 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: ApplicationFiled: August 3, 2020Publication date: December 22, 2022Applicant: Sumitomo Electric Industries, Ltd.Inventors: Shigeyuki TANAKA, Yutaka MATSUMURA, Taro FUJITA, Takumi OOSHIMA, Jo YAGISAWA
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Patent number: 11443870Abstract: 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: GrantFiled: November 28, 2019Date of Patent: September 13, 2022Assignees: SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenta Kobayashi, Jo Yagisawa, Masayuki Ishikawa, Takumi Ooshima
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Patent number: 11410792Abstract: 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: GrantFiled: May 22, 2020Date of Patent: August 9, 2022Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takumi Ooshima, Masayuki Ishikawa, Jo Yagisawa
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Publication number: 20220238253Abstract: 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: ApplicationFiled: June 1, 2020Publication date: July 28, 2022Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Takumi OOSHIMA, Jo YAGISAWA
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Publication number: 20220115164Abstract: 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: ApplicationFiled: May 22, 2020Publication date: April 14, 2022Inventors: Takumi OOSHIMA, Masayuki ISHIKAWA, Jo YAGISAWA
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Publication number: 20220028579Abstract: 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: ApplicationFiled: November 28, 2019Publication date: January 27, 2022Inventors: Kenta KOBAYASHI, Jo YAGISAWA, Masayuki ISHIKAWA, Takumi OOSHIMA
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Publication number: 20220020510Abstract: 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: ApplicationFiled: November 28, 2019Publication date: January 20, 2022Inventors: Kenta KOBAYASHI, Jo YAGISAWA, Masayuki ISHIKAWA, Takumi OOSHIMA
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Patent number: 10703889Abstract: 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: GrantFiled: October 4, 2017Date of Patent: July 7, 2020Assignee: Sumitomo Electric Industries, Ltd.Inventors: Nayu Yanagawa, Shigeyuki Tanaka, Taro Fujita, Shinya Nishikawa, Takumi Ooshima, Hiroyuki Okawa
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Publication number: 20180371221Abstract: 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: ApplicationFiled: October 4, 2017Publication date: December 27, 2018Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Nayu YANAGAWA, Shigeyuki TANAKA, Taro FUJITA, Shinya NISHIKAWA, Takumi OOSHIMA, Hiroyuki OKAWA