Patents by Inventor Hiroshi Okikawa

Hiroshi Okikawa 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: 20160314875
    Abstract: A noise reduction cable includes an insulated wire including an insulator and a wire conductor, an outer circumference of which is coated with the insulator, a magnetic-material layer including a magnetic-material-containing member wound around an outer circumference of the insulated wire, a shield layer with which an outer circumference of the magnetic-material layer is coated, a magnetic-material-fixing-and-insulating tape layer that is disposed between the magnetic-material layer and the shield layer. The magnetic-material-fixing-and-insulating tape layer fixes the magnetic-material layer and insulates the magnetic-material layer and the shield layer from each other.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 27, 2016
    Inventors: Katsutoshi NAKATANI, Yosuke SUMI, Katsuya AKIMOTO, Kenji AJIMA, Hiroshi OKIKAWA
  • Patent number: 9455071
    Abstract: A noise suppression cable includes a conductor wire, and a magnetic insulation layer on a periphery of the conductor wire. The magnetic insulation layer includes an insulating material and two or more types of magnetic powders that have different frequency characteristics from each other.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: September 27, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yosuke Sumi, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Hiroshi Komuro, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Publication number: 20160211060
    Abstract: A shield cable includes an insulated electrical cable of a conductor wire sheathed about the circumference by an insulator, and a magnetic tape layer formed by wrapping magnetic tape about the circumference of the insulated electrical cable. The magnetic tape is a magnetic tape shaped by continuously cutting to constant width an elongated sheet comprising a magnetic material. The magnetic tape, on at least the insulated electrical cable-facing surface thereof, has grooves extending in the lengthwise direction, for accommodating at least one of pairs of burrs that are formed at both widthwise edge surfaces during cutting of the elongated sheet.
    Type: Application
    Filed: February 27, 2014
    Publication date: July 21, 2016
    Inventors: Katsuya AKIMOTO, Naofumi CHIWATA, Yosuke SUMI, Katsutoshi NAKATANI, Kenji AJIMA, Hiroshi OKIKAWA, Yasuharu MUTO
  • Patent number: 9396841
    Abstract: A noise suppression cable includes a plurality of twisted pair wires, an inclusion that includes an insulating material and a magnetic powder and separates the plurality of twisted pair wires, and a sheath that includes an insulating material and covers a periphery of the plurality of twisted pair wires and the inclusion.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 19, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yosuke Sumi, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Publication number: 20160141072
    Abstract: An electric wire includes a conductor having a cross-sectional area of not less than 225 mm2 and not more than 275 mm2, an insulation provided so as to cover the outer periphery of the conductor, and a wire sheath provided so as to cover the outer periphery of the insulation. The amount of deflection is not less than 130 mm when, at 23° C., one end of the electric wire is fixed to a fixture table so that another end horizontally protrudes 400 mm from the fixture table and a weight of 2 kg is attached to the other end, and cracks and breaks do not occur when wound with a bending diameter of three times the diameter at ?40° C.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Tamotsu KIBE, Hisao FURUICHI, Hiroshi OKIKAWA, Ryutaro KIKUCHI
  • Publication number: 20160141077
    Abstract: An electric wire includes a conductor having a cross-sectional area of not less than 180 mm2 and not more than 220 mm2, an insulation provided so as to cover the outer periphery of the conductor, and a wire sheath provided so as to cover the outer periphery of the insulation. The amount of deflection is not less than 180 mm when, at 23° C., one end of the electric wire is fixed to a fixture table so that another end horizontally protrudes 400 mm from the fixture table and a weight of 2 kg is attached to the other end, and cracks and breaks do not occur when wound with a bending diameter of three times the diameter at ?40° C.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 19, 2016
    Inventors: Tamotsu KIBE, Hisao FURUICHI, Hiroshi OKIKAWA, Ryutaro KIKUCHI
  • Publication number: 20160141073
    Abstract: An electric wire includes a conductor having a cross-sectional area of not less than 290 mm2 and not more than 360 mm2, an insulation provided so as to cover the outer periphery of the conductor, and a wire sheath provided so as to cover the outer periphery of the insulation. The amount of deflection is not less than 120 mm when, at 23° C., one end of the electric wire is fixed to a fixture table so that another end horizontally protrudes 400 mm from the fixture table and a weight of 2 kg is attached to the other end, and cracks and breaks do not occur when wound with a bending diameter of three times the diameter at ?40° C.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Tamotsu KIBE, Hisao FURUICHI, Hiroshi OKIKAWA, Ryutaro KIKUCHI
  • Publication number: 20160141075
    Abstract: An electric wire includes a conductor having a cross-sectional area of not less than 135 mm2 and not more than 165 mm2, an insulation provided so as to cover the outer periphery of the conductor, and a wire sheath provided so as to cover the outer periphery of the insulation. The amount of deflection is not less than 250 mm when, at 23° C., one end of the electric wire is fixed to a fixture table so that another end horizontally protrudes 400 mm from the fixture table and a weight of 2 kg is attached to the other end, and cracks and breaks do not occur when wound with a bending diameter of three times the diameter at ?40° C.
    Type: Application
    Filed: November 9, 2015
    Publication date: May 19, 2016
    Inventors: Tamotsu KIBE, Hisao Furuichi, Hiroshi Okikawa, Ryutaro Kikuchi
  • Publication number: 20160133760
    Abstract: A solar cell lead wire includes a molten solder plated layer on a strip-shaped conductive material. The thickness of the oxide film on a surface to the molten solder plate layer is suppressed to be not more than 7 nm.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 12, 2016
    Inventors: Hajime NISHI, Yuju ENDO, Ken TAKAHASHI, Hiromitsu KURODA, Hiroyuki AKUTSU, Katsunori SAWAHATA, Hiroshi BANDO, Iku HIGASHIDANI, Hiroshi OKIKAWA
  • Publication number: 20160125973
    Abstract: A cable includes a conductor, an insulation coating layer on the conductor, and an outer coating layer on the insulation coating layer. The insulation coating layer is made of a composition containing 100 parts by mass of a base polymer (A) and 100 to 250 parts by mass of a non-halogen flame retardant. The polymer (A) contains 70% to 99% by mass of an ethylene-vinyl acetate copolymer (a1) containing an ethylene-vinyl acetate copolymer having a melting point of 70° C. or higher, and 1% to 30% by mass of an acid-modified polyolefin resin (a2) having a glass transition point of ?55° C. or lower. The polymer (A) contains 25% to 50% by mass of a vinyl acetate component derived from the copolymer (a1). The outer coating layer is made of a composition containing 100 parts by mass of a base polymer (B) and 150 to 220 parts by mass of a non-halogen flame retardant.
    Type: Application
    Filed: September 30, 2015
    Publication date: May 5, 2016
    Inventors: Makoto Iwasaki, Motoharu Kajiyama, Yoshiaki Nakamura, Hiroshi Okikawa, Mitsuru Hashimoto, Kenichiro Fujimoto, Akinari Nakayama
  • Patent number: 9279176
    Abstract: A solar cell lead wire includes a molten solder plated layer on a strip-shaped conductive material formed rectangular in a cross section thereof so as to be bonded by soldering to an electrode of a solar cell, using a flux. A thickness of an oxide film on a surface of the molten solder plated layer, which is a sum of a thickness of an SnO layer and a thickness of an SnO2 layer on the surface of the molten solder plated layer, is not more than 7 nm.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: March 8, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hajime Nishi, Yuju Endo, Ken Takahashi, Hiromitsu Kuroda, Hiroyuki Akutsu, Katsunori Sawahata, Hiroshi Bando, Iku Higashidani, Hiroshi Okikawa
  • Publication number: 20150371735
    Abstract: An insulated wire includes a conductor, and an insulating cover layer including an inner layer on an outer periphery of the conductor and an outer layer on an outer periphery of the inner layer. The inner layer includes a halogen-free resin composition including base polymer (A), which includes a first ethylene-?-olefin copolymer (a1) and a second ethylene-?-olefin copolymer (a2) at a ratio of 50:50 to 90:10, the first ethylene-?-olefin copolymer (a1) having a density of not less than 0.864 g/cm3 and not more than 0.890 g/cm3, a melting point of not more than 90° C. and a melt flow rate of not less than 1 g/10 min and not more than 5 g/10 min, and the second ethylene-?-olefin copolymer (a2) having a melting point of not less than 55° C. and not more than 80° C. and a melt flow rate of not less than 30 g/10 min.
    Type: Application
    Filed: June 6, 2015
    Publication date: December 24, 2015
    Inventors: Makoto IWASAKI, Hiroshi OKIKAWA, Mitsuru HASHIMOTO, Kenichiro FUJIMOTO
  • Publication number: 20150357087
    Abstract: A noise suppression cable includes a conductor wire, and a magnetic insulation layer on a periphery of the conductor wire. The magnetic insulation layer includes an insulating material and two or more types of magnetic powders that have different frequency characteristics from each other.
    Type: Application
    Filed: June 5, 2015
    Publication date: December 10, 2015
    Inventors: Yosuke SUMI, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Hiroshi Komuro, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Publication number: 20150235741
    Abstract: A noise suppression cable includes a conductor wire, and a magnetic insulation layer that is formed around the conductor wire and includes an insulating material and a flat-shaped magnetic powder. A flatness direction of the magnetic powder is oriented in a circumferential direction of the magnetic insulation layer.
    Type: Application
    Filed: January 27, 2015
    Publication date: August 20, 2015
    Inventors: Yosuke Sumi, Naofumi Chiwata, Katsuya Akimoto, Katsutoshi Nakatani, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Publication number: 20150235738
    Abstract: A noise suppression cable includes an electrical wire, a first magnetic material including a pair of first surfaces formed along an axis direction of the electrical wire and a convex portion projecting from the first surfaces, and a second magnetic material including a pair of second surfaces disposed on a periphery of the electrical wire, the pair of the second surfaces contacting the pair of the first surfaces such that a tubular shape is formed by the first and second magnetic materials. The first magnetic material and the second magnetic material are configured to generate a compression stress in the convex portion of the first magnetic material by receiving an external force so as to reduce a relative permeability of the convex portion.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Inventors: Katsutoshi NAKATANI, Yosuke SUMI, Kenji AJIMA, Katsuya AKIMOTO, Naofumi CHIWATA, Hiroshi OKIKAWA, Yasuharu MUTO
  • Publication number: 20150228377
    Abstract: A shielded cable includes an insulated wire including a conductor wire and an insulation formed around the conductor wire, and a shield layer formed around the insulated wire and including a shield wire. The shield wire includes a tubular member including a conductive material and defining a gap therein, and a magnetic powder is filled in the gap.
    Type: Application
    Filed: February 10, 2015
    Publication date: August 13, 2015
    Inventors: Katsuya AKIMOTO, Naofumi Chiwata, Yosuke Sumi, Katsutoshi Nakatani, Kenji Ajima, Hiroshi Okikawa, Yasuharu Muto
  • Publication number: 20150221418
    Abstract: A noise suppression cable includes a plurality of twisted pair wires, an inclusion that includes an insulating material and a magnetic powder and separates the plurality of twisted pair wires, and a sheath that includes an insulating material and covers a periphery of the plurality of twisted pair wires and the inclusion.
    Type: Application
    Filed: January 27, 2015
    Publication date: August 6, 2015
    Inventors: Yosuke SUMI, Naofumi CHIWATA, Katsuya AKIMOTO, Katsutoshi NAKATANI, Kenji AJIMA, Hiroshi OKIKAWA, Yasuharu MUTO
  • Patent number: 8769813
    Abstract: A wiring material is provided by electrically connecting a connecting terminal with two single line conductors arranged in parallel. The connecting terminal is provided with a tube-shaped section for storing two single line conductors, the two single line conductors are inserted into the tube-shaped section, resistance welding is performed by carrying electricity from the external of the tube-shaped section in a status where the tube-shaped section and the single line conductors are mutually brought into contact, and the connecting terminal is electrically connected with the two single line conductors.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 8, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Toru Sumi, Tsukasa Iwasita, Kenichi Egami, Kazuyuki Watanabe, Hiroshi Okikawa
  • Patent number: 8653380
    Abstract: A solar cell lead includes a strip plate conductive material that a surface thereof is coated with solder plating. The coated solder plating includes a concavo-convex portion on a surface thereof and a 0.2% proof stress of not more than 90 MPa by a tensile test. The coated solder plating includes a hot-dip solder plating layer formed by supplying a molten solder on the surface of the strip plate conductive material. A plating temperature is set to be not higher than a liquidus-line temperature of the used solder plus 120° C., and an oxide film on a surface of the hot-dip solder plating layer is set to be not more than 7 nm in thickness.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 18, 2014
    Assignees: Hitachi Cable, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Hajime Nishi, Ken Takahashi, Hiromitsu Kuroda, Hiroshi Okikawa, Kuniaki Kimoto, Hiroyuki Akutsu, Yukio Ito, Iku Higashidani
  • Patent number: 8250744
    Abstract: A solar cell lead wire includes a conductive material, and a solder plated layer on a periphery of the conductive material. The solder plated layer is formed flat by rolling. A method of manufacturing a solar cell lead wire includes feeding an elongate conductive material from a feed reel, the elongate conductive material including a rectangular conductor or a round conductor, soaking the conductive material in a molten solder in a molten solder plating bath, cooling the conductive material to have a plated wire with a solder plated layer formed on the conductive material, and winding the plated wire on a winding reel. The plated wire is formed flat by rolling after the solder plated layer of the plated wire is solidified by the cooling.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: August 28, 2012
    Assignees: Hitachi Cable, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Seigi Aoyama, Hiroshi Bando, Iku Higashidani, Yoshiharu Masaki, Hiroshi Okikawa