Patents by Inventor Shohei Hata

Shohei Hata 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).

  • Patent number: 11545277
    Abstract: Bendability of a copper alloy wire is improved without decrease in an electrical conductivity of the copper alloy wire made of copper alloy containing zirconium. A cable includes: a two-core stranded wire formed by intertwining two electrical wires made of a conductor and an insulating layer covering the conductor; a filler formed around the two-core stranded wire; and a sheath formed around the filler and the electrical wire. The conductor is a copper alloy wire in which a precipitate containing the zirconium disperses, and has a crystal gain diameter that is equal to or smaller than 1 ?m, an electrical conductivity that is equal to or higher than 87% IACS, and a tensile stress that is equal to or larger than 545 MPa.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: January 3, 2023
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kazuhisa Takahashi, Shohei Hata, Hiromitsu Kuroda, Toru Sumi, Kazuya Nishi, Keisuke Fujito, Takayuki Tuji
  • Patent number: 11476024
    Abstract: An insulated electric wire is composed of a conductor composed of a copper material, and an electrical insulating layer provided on an outer periphery of the conductor. For the constituent conductor of the insulated electric wire, in an orientation intensity ratio obtained by X-ray diffraction of a transverse cross section of the conductor, an intensity in a [200] crystal orientation is higher than an intensity in a [111] crystal orientation.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: October 18, 2022
    Assignee: Hitachi Metals, Ltd.
    Inventors: Keisuke Fujito, Shohei Hata, Hiromitsu Kuroda, Takayuki Tuji
  • Publication number: 20220316032
    Abstract: Recrystallization of an aluminium alloy wire material is suppressed while a heat resistance of the same is improved. In a wire material made of an aluminium alloy, an aluminium alloy wire material is provided, the aluminium alloy containing Zr of 0.2 to 1.0 mass %, Co of 0.1 to 1.0 mass % and remainders that are aluminium and unavoidable impurities, and the aluminium alloy wire material having a tensile strength at a room temperature that is equal to or higher than 170 MPa, an elongation that is equal to or higher than 10%, and a stress at time of tensile deformation at a strain speed of 10?5/sec under a temperature condition of 250° C. that is equal to or higher than 40 MPa.
    Type: Application
    Filed: March 28, 2022
    Publication date: October 6, 2022
    Inventors: Kazuya NISHI, Toru SUMI, Shohei HATA
  • Publication number: 20220203433
    Abstract: A manufacturing efficiency of the wire rod made of the cast alloy including the additive element having the high activity to the oxygen is improved. An apparatus of manufacturing a wire rod includes: a tundish storing a molten metal; a mold for use in continuously casting the molten metal fed from the tundish; and an additive-element feeding unit continuously feeding an additive element (wire) to a feeding port of the mold.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 30, 2022
    Inventors: Keisuke Fujito, Takayuki Tsuji, Shohei Hata
  • Patent number: 11355258
    Abstract: A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an Al—Zr compound, and an Al—Co—Fe or Al—Ni—Fe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 ?m or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 ?m or less.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: June 7, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Toru Sumi, Kazuya Nishi, Shohei Hata, Takashi Hayasaka, Takeshi Usami
  • Patent number: 11094434
    Abstract: An insulated wire includes a conductor including a copper material, and an insulation layer that is formed on an outer periphery of the conductor. A restoring temperature TB of the conductor is not more than 130° C. The restoring temperature TB is a temperature that is needed to restore a conductivity of the conductor after a coil processing to a conductivity of the conductor before the coil processing.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 17, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Hiromitsu Kuroda, Shohei Hata, Takayuki Tsuji, Keisuke Fujito
  • Patent number: 10920306
    Abstract: An aluminum alloy wire rod has a chemical composition consisting of 0.1 to 1.0 mass % of Co, 0.2 to 0.5 mass % of Zr, 0.02 to 0.09 mass % of Fe, 0.02 to 0.09 mass % of Si, 0 to 0.2 mass % of Mg, 0 to 0.10 mass % of Ti, 0 to 0.03 mass % of B, 0 to 1.00 mass % of Cu, 0 to 0.50 mass % of Ag, 0 to 0.50 mass % of Au, 0 to 1.00 mass % of Mn, 0 to 1.00 mass % of Cr, 0 to 0.50 mass % of Hf, 0 to 0.50 mass % of V, 0 to 0.50 mass % of Sc, 0 to 0.50 mass % of Ni, the balance being Al and inevitable impurities, and a metal structure including Al crystal grains, an Al—Co—Fe compound and an Al—Zr compound. The Al crystal grains having a crystal grain diameter of 10 ?m or less have an area ratio of 90% or more. The wire rod has a tensile strength of 150 MPa or more, an electrical conductivity of 55% IACS or more and when heated at 200 deg C. for 10 years, a strength of 90% or more of its initial state strength.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 16, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Toru Sumi, Kazuya Nishi, Shohei Hata, Takashi Hayasaka, Takeshi Usami
  • Publication number: 20210005342
    Abstract: A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an Al—Zr compound, and an Al—Co—Fe or Al—Ni—Fe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 ?m or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 ?m or less.
    Type: Application
    Filed: November 12, 2019
    Publication date: January 7, 2021
    Inventors: Toru SUMI, Kazuya Nishi, Shohei Hata, Takashi Hayasaka, Takeshi Usami
  • Publication number: 20200373049
    Abstract: An insulated electric wire is composed of a conductor composed of a copper material, and an electrical insulating layer provided on an outer periphery of the conductor. For the constituent conductor of the insulated electric wire, in an orientation intensity ratio obtained by X-ray diffraction of a transverse cross section of the conductor, an intensity in a [200] crystal orientation is higher than an intensity in a [111] crystal orientation.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 26, 2020
    Applicant: Hitachi Metals, Ltd.
    Inventors: Keisuke FUJITO, Shohei HATA, Hiromitsu KURODA, Takayuki TUJI
  • Patent number: 10799944
    Abstract: A copper alloy material manufacturing equipment for manufacturing a copper alloy material by continuously casting molten copper. The equipment includes an element adding means for adding a metal element to the molten copper, a tundish for holding the molten copper containing the metal element, a pouring nozzle connected to the tundish to feed the molten copper from the tundish, and a trapping member arranged inside the tundish and including a same type of material as at least one of an oxide of the metal element, a nitride of the metal element, a carbide of the metal element and a sulfide of the metal element.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 13, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Keisuke Fujito, Shohei Hata, Takayuki Tsuji, Hiromitsu Kuroda
  • Patent number: 10718037
    Abstract: A copper alloy material production method is provided. A copper raw material including not higher than 30 ppm by mass of oxygen is melted to form a molten copper. Not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium is added to the molten copper. After the adding of the titanium, not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium is added.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: July 21, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Shohei Hata, Takayuki Tsuji, Hiromitsu Kuroda, Keisuke Fujito
  • Publication number: 20200075193
    Abstract: Bendability of a copper alloy wire is improved without decrease in an electrical conductivity of the copper alloy wire made of copper alloy containing zirconium. A cable includes: a two-core stranded wire formed by intertwining two electrical wires made of a conductor and an insulating layer covering the conductor; a filler formed around the two-core stranded wire; and a sheath formed around the filler and the electrical wire. The conductor is a copper alloy wire in which a precipitate containing the zirconium disperses, and has a crystal gain diameter that is equal to or smaller than 1 ?m, an electrical conductivity that is equal to or higher than 87% IACS, and a tensile stress that is equal to or larger than 545 MPa.
    Type: Application
    Filed: August 12, 2019
    Publication date: March 5, 2020
    Inventors: Kazuhisa TAKAHASHI, Shohei HATA, Hiromitsu KURODA, Toru SUMI, Kazuya NISHI, Keisuke FUJITO, Takayuki TUJI
  • Patent number: 10481023
    Abstract: A mechanical quantity measuring device includes: a sensor chip having a strain detector formed on a surface of a semiconductor substrate and a plurality of electrodes connected to the strain detector; a stem having ascot that protrudes from an adjacent peripheral portion and has an upper surface that is attached to a lower surface of the sensor chip by a bonding material formed from a metallic material or a glass material; a lead-out wiring part including a plurality of wires that are electrically connected to the plurality of electrodes; and a fixing part for fixing the stem, wherein: the stem and the fixing part are integrally molded or fixed through metallic bonding or mechanical bonding.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: November 19, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hanae Shimokawa, Hiroyuki Oota, Atsushi Kazama, Shohei Hata, Takuto Yamaguchi, Atsuo Soma, Kisho Ashida, Junji Onozuka, Kentarou Miyajima, Masayuki Hio
  • Publication number: 20190345594
    Abstract: An aluminum alloy wire rod has a chemical composition consisting of 0.1 to 1.0 mass % of Co, 0.2 to 0.5 mass % of Zr, 0.02 to 0.09 mass % of Fe, 0.02 to 0.09 mass % of Si, 0 to 0.2 mass % of Mg, 0 to 0.10 mass % of Ti, 0 to 0.03 mass % of B, 0 to 1.00 mass % of Cu, 0 to 0.50 mass % of Ag, 0 to 0.50 mass % of Au, 0 to 1.00 mass % of Mn, 0 to 1.00 mass % of Cr, 0 to 0.50 mass % of Hf, 0 to 0.50 mass % of V, 0 to 0.50 mass % of Sc, 0 to 0.50 mass % of Ni, the balance being Al and inevitable impurities, and a metal structure including Al crystal grains, an Al—Co—Fe compound and an Al-Zr compound. The Al crystal grains having a crystal grain diameter of 10 ?m or less have an area ratio of 90% or more. The wire rod has a tensile strength of 150 MPa or more, an electrical conductivity of 55% IACS or more and when heated at 200 deg C. for 10 years, a strength of 90% or more of its initial state strength.
    Type: Application
    Filed: November 15, 2018
    Publication date: November 14, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Toru Sumi, Kazuya Nishi, Shohei Hata, Takashi Hayasaka, Takeshi Usami
  • Publication number: 20190272932
    Abstract: An insulated wire includes a conductor including a copper material, and an insulation layer that is formed on an outer periphery of the conductor. A restoring temperature TB of the conductor is not more than 130° C. The restoring temperature TB is a temperature that is needed to restore a conductivity of the conductor after a coil processing to a conductivity of the conductor before the coil processing.
    Type: Application
    Filed: September 27, 2018
    Publication date: September 5, 2019
    Inventors: Hiromitsu KURODA, Shohei HATA, Takayuki TSUJI, Keisuke FUJITO
  • Patent number: 10192649
    Abstract: It is an objective of the invention to provide an Al alloy conductor exhibiting mechanical properties and heat resistance that are balanced at a higher level than conventional Al alloy conductors while having an electrical conductivity comparable to that of any conventional Al-based material. There is provided an Al alloy conductor formed of an Al alloy. The Al alloy has a chemical composition including Co of 0.1 mass % or more and 1 mass % or less, at least one of Sc of 0.1 mass % or more and 0.5 mass % or less and Zr of 0.2 mass % or more and 0.5 mass % or less, and the balance made up of Al and inevitable impurities. The Al alloy conductor has a matrix containing fine particles of a compound of at least one of the Sc and the Zr with the Al. The fine particles are dispersedly precipitated in the matrix.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: January 29, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kazuya Nishi, Toru Sumi, Shohei Hata
  • Publication number: 20180254118
    Abstract: It is an objective of the invention to provide an Al alloy conductor exhibiting mechanical properties and heat resistance that are balanced at a higher level than conventional Al alloy conductors while having an electrical conductivity comparable to that of any conventional Al-based material. There is provided an Al alloy conductor formed of an Al alloy. The Al alloy has a chemical composition including Co of 0.1 mass % or more and 1 mass % or less, at least one of Sc of 0.1 mass % or more and 0.5 mass % or less and Zr of 0.2 mass % or more and 0.5 mass % or less, and the balance made up of Al and inevitable impurities. The Al alloy conductor has a matrix containing fine particles of a compound of at least one of the Sc and the Zr with the Al. The fine particles are dispersedly precipitated in the matrix.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Applicant: HITACHI METALS, LTD.
    Inventors: Kazuya NISHI, Toru SUMI, Shohei HATA
  • Publication number: 20170368599
    Abstract: A copper alloy material manufacturing equipment for manufacturing a copper alloy material by continuously casting molten copper. The equipment includes an element adding means for adding a metal element to the molten copper, a tundish for holding the molten copper containing the metal element, a pouring nozzle connected to the tundish to feed the molten copper from the tundish, and a trapping member arranged inside the tundish and including a same type of material as at least one of an oxide of the metal element, a nitride of the metal element, a carbide of the metal element and a sulfide of the metal element.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 28, 2017
    Inventors: Keisuke Fujito, Shohei Hata, Takayuki Tsuji, Hiromitsu Kuroda
  • Publication number: 20170261265
    Abstract: There is provide an apparatus for manufacturing a copper alloy metal material, including: a tundish in which molten copper is stored; a pouring nozzle through which the molten copper passes, the molten copper being flowed out from the tundish; a pressure variation device that varies a pressure applied to the pouring nozzle by the molten copper; and a controller that controls the pressure variation device so as to remove inclusions adhered to the pouring nozzle, by increasing the pressure applied to the pouring nozzle by the molten copper.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 14, 2017
    Inventors: Keisuke FUJITO, Shohei Hata, Takayuki Tsuji, Hiromitsu Kuroda
  • Publication number: 20170108390
    Abstract: A mechanical quantity measuring device includes: a sensor chip having a strain detector formed on a surface of a semiconductor substrate and a plurality of electrodes connected to the strain detector; a stem having ascot that protrudes from an adjacent peripheral portion and has an upper surface that is attached to a lower surface of the sensor chip by a bonding material formed from a metallic material or a glass material; a lead-out wiring part including a plurality of wires that are electrically connected to the plurality of electrodes; and a fixing part for fixing the stem, wherein: the stem and the fixing part are integrally molded or fixed through metallic bonding or mechanical bonding.
    Type: Application
    Filed: January 26, 2015
    Publication date: April 20, 2017
    Inventors: Hanae SHIMOKAWA, Hiroyuki OOTA, Atsushi KAZAMA, Shohei HATA, Takuto YAMAGUCHI, Atsuo SOMA, Kisho ASHIDA, Junji ONOZUKA, Kentarou MIYAJIMA, Masayuki HIO