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).

  • Patent number: 8143525
    Abstract: A solar cell lead wire includes a strip-shaped conductive material formed by rolling a wire, and upper and lower melt solder-plated layers formed to be flat on upper and lower surfaces, respectively, of the strip-shaped conductive material by supplying melt solder thereto.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 27, 2012
    Assignees: Hitachi Cable, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Hajime Nishi, Yuju Endo, Hiroyuki Akutsu, Hiroshi Bando, Iku Higashidani, Katsunori Sawahata, Yukio Ito, Hiroshi Okikawa
  • Patent number: 8143517
    Abstract: An extra-fine copper alloy twisted wire including a plurality of copper alloy wires with a wire diameter of 0.010 to 0.025 mm twisted together, each of the copper alloy wires including 1 to 3 weight % of silver (Ag) and a balance consisting of a copper and an inevitable impurity, the copper alloy twisted wire further including a tensile strength of not less than 850 MPa, and an electrical conductivity of not less than 85% IACS. The extra-fine copper alloy twisted wire includes a solid insulation with a thickness of not more than 0.07 mm formed on an outer circumference of the extra-fine insulated wire.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: March 27, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventors: Huang Detian, Hiromitsu Kuroda, Hakaru Matsui, Osamu Seya, Ryohei Okada, Shinichi Masui, Ryuji Nakagawa, Hiroshi Okikawa
  • Patent number: 8138606
    Abstract: A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of its surface, and the Sn-based material part includes a base metal doped with an oxidation control element. The oxidation control element is at least one element selected from a group consisted of P, Ge, K, Zn, Cr, Mn, Na, V, Si, Ti, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn and the oxidation control element is diffused to form an alloy.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: March 20, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventors: Takayuki Tsuji, Hiroshi Yamanobe, Hajime Nishi, Takeshi Usami, Seigi Aoyama, Masato Ito, Hiroshi Okikawa
  • Publication number: 20110220196
    Abstract: Disclosed is a lead wire for a solar cell having excellent bondability with a solar cell. The solar cell lead wire (10) has a band plate-shaped electroconductive material (12) that is formed with straight-angled cross-sectional shape and is covered by a molten solder plating layer (13), with the thickness of the oxide film on the surface of the molten solder plating layer (13) being 7 nm or less.
    Type: Application
    Filed: November 20, 2009
    Publication date: September 15, 2011
    Inventors: Hajime Nishi, Yuju Endo, Ken Takahashi, Hiromitsu Kuroda, Hiroyuki Akutsu, Katsunori Sawahata, Hiroshi Bando, Iku Higashidani, Hiroshi Okikawa
  • Patent number: 7832099
    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: December 9, 2005
    Date of Patent: November 16, 2010
    Assignee: Hitachi Cable, Ltd.
    Inventors: Toru Sumi, Tsukasa Iwasita, Kenichi Egami, Kazuyuki Watanabe, Hiroshi Okikawa
  • Publication number: 20100281686
    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: Application
    Filed: July 23, 2010
    Publication date: November 11, 2010
    Applicant: HITACHI CABLE, LTD.
    Inventors: Toru Sumi, Tsukasa Iwasita, Kenichi Egami, Kazuyuki Watanabe, Hiroshi Okikawa
  • Publication number: 20100218981
    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: Application
    Filed: February 26, 2010
    Publication date: September 2, 2010
    Applicants: 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: 7737370
    Abstract: An electromagnetic shielding filter has two transparent boards and a conductive mesh with plural wires, where the conductive mesh is sandwiched between the two transparent boards. The plural wires are formed of a Cu—Sn—In alloy or a Cu—Ag alloy.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: June 15, 2010
    Assignee: Hitachi Cable, Ltd.
    Inventors: Seigi Aoyama, Toshiyuki Horikoshi, Hiromitsu Kuroda, Yuzo Ito, Hiroshi Komuro, Hiroshi Okikawa
  • Publication number: 20100018748
    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: Application
    Filed: July 17, 2009
    Publication date: January 28, 2010
    Applicants: HITACHI CABLE, LTD., HITACHI CABLE FINE-TECH, LTD.
    Inventors: Seigi Aoyama, Hiroshi Bando, Iku Higashidani, Yoshiharu Masaki, Hiroshi Okikawa
  • Patent number: 7622679
    Abstract: An insulating layer 3 mainly composed of a fluorine resin is provided at an outer periphery of an inner conductor 2 to provide an inner insulated wire 4. A skin layer 5 mainly composed of a fluorine resin and doped with titanium oxide and carbon black or the titanium oxide and nickel as color pigment is provided at an outer periphery of stranded inner insulated wires 4. An outer conductor (shield) 6 is provided at an outer periphery of the skin layer 5, and a sheath layer (jacket) 7 is provided at an outer periphery of the outer conductor 6, to provide a signal transmission cable 1 having excellent electric characteristics, mechanical characteristics and terminal workability.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: November 24, 2009
    Assignees: Hitachi Global, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Detian Huang, Hiroshi Komuro, Ryuji Nakagawa, Kazuyuki Naito, Hiroshi Okikawa
  • Publication number: 20090260689
    Abstract: A solar cell lead wire includes a conducting material, and a molten solder plated layer formed on the conducting material. The conducting material includes a concave-convex conducting material that includes a concavity on top and under surfaces thereof, respectively, and a convexity on a side surface thereof, and that is formed by die processing a strip-shaped conducting material, and the molten solder plated layer comprises a flat surface formed by supplying a molten solder to the concavity of the concave-convex conducting material.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 22, 2009
    Applicants: Hitachi Cable, Ltd., Hitachi Cable Fine Tech, Ltd.
    Inventors: Hajime Nishi, Yuju Endo, Hiroyuki Akutsu, Hiroshi Okikawa
  • Publication number: 20090255710
    Abstract: A solar cell lead wire includes a strip-shaped conductive material formed by rolling a wire, and upper and lower melt solder-plated layers formed to be flat on upper and lower surfaces, respectively, of the strip-shaped conductive material by supplying melt solder thereto.
    Type: Application
    Filed: December 16, 2008
    Publication date: October 15, 2009
    Applicants: Hitachi Cable, Ltd., Hitachi Cable Fine-Tech, Ltd.
    Inventors: Hajime Nishi, Yuju Endo, Hiroyuki Akutsu, Hiroshi Bando, Iku Higashidani, Katsunori Sawahata, Yukio Ito, Hiroshi Okikawa
  • Publication number: 20090223713
    Abstract: An extra-fine copper alloy twisted wire comprising a plurality of copper alloy wires with a wire diameter of 0.010 to 0.025 mm twisted together, each of the copper alloy wires comprising 1 to 3 weight % of silver (Ag) and a balance consisting of a copper and an inevitable impurity, the copper alloy twisted wire further comprising a tensile strength of not less than 850 MPa, and an electrical conductivity of not less than 85% IACS. The extra-fine copper alloy twisted wire comprises a solid insulation with a thickness of not more than 0.07 mm formed on an outer circumference of the extra-fine insulated wire.
    Type: Application
    Filed: April 8, 2009
    Publication date: September 10, 2009
    Applicant: Hitachi Cable, Ltd.
    Inventors: Huang Detian, Hiromitsu Kuroda, Hakaru Matsui, Osamu Seya, Ryohei Okada, Shinichi Masui, Ryuji Nakagawa, Hiroshi Okikawa
  • Patent number: 7544886
    Abstract: An extra-fine copper alloy wire has: a wire diameter of 0.010 to 0.025 mm; 1 to 3 weight % of silver (Ag), and a balance consisting copper (Co) and an inevitable impurity; a tensile strength of not less than 850 MPa; an electrical conductivity of not less than 85% IACS; an elongation of 0.5 to 3.0%; and a lowering rate in tensile strength of not more than 2%. The lowering rate is represented by [(1??h1/?h0)×100%] where ?h1 is a tensile strength of the wire measured after a heat treatment under conditions of a heating temperature of not more than 350° C. and a heating time of not more than 5 seconds, and ?h0 is a tensile strength of the wire measured before the heat treatment.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: June 9, 2009
    Assignee: Hitachi Cable, Ltd.
    Inventors: Huang Detian, Hiromitsu Kuroda, Hakaru Matsui, Osamu Seya, Ryohei Okada, Shinichi Masui, Ryuji Nakagawa, Hiroshi Okikawa
  • Publication number: 20080314613
    Abstract: An insulating layer 3 mainly composed of a fluorine resin is provided at an outer periphery of an inner conductor 2 to provide an inner insulated wire 4. A skin layer 5 mainly composed of a fluorine resin and doped with titanium oxide and carbon black or the titanium oxide and nickel as color pigment is provided at an outer periphery of stranded inner insulated wires 4. An outer conductor (shield) 6 is provided at an outer periphery of the skin layer 5, and a sheath layer (jacket) 7 is provided at an outer periphery of the outer conductor 6, to provide a signal transmission cable 1 having excellent electric characteristics, mechanical characteristics and terminal workability.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 25, 2008
    Applicants: HITACHI CABLE FINE-TECH, LTD., HITACHI CABLE, LTD.
    Inventors: Detian Huang, Hiroshi Komuro, Ryuji Nakagawa, Kazuyuki Naito, Hiroshi Okikawa
  • Publication number: 20080081499
    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: Application
    Filed: December 9, 2005
    Publication date: April 3, 2008
    Inventors: Toru Sumi, Tsukasa Iwasita, Kenichi Egami, Kazuyuki Watanabe, Hiroshi Okikawa
  • Publication number: 20080047747
    Abstract: An electromagnetic shielding filter has two transparent boards and a conductive mesh with plural wires, where the conductive mesh is sandwiched between the two transparent boards. The plural wires are formed of a Cu—Sn—In alloy or a Cu—Ag alloy.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 28, 2008
    Applicant: HITACHI CABLE, LTD.
    Inventors: Seigi Aoyama, Toshiyuki Horikoshi, Hiromitsu Kuroda, Yuzo Ito, Hiroshi Komuro, Hiroshi Okikawa
  • Publication number: 20080011347
    Abstract: A connecting lead wire is used for a solar battery module in which a plurality of solar battery cells connected in series by an inter-connector are arranged. The connecting lead wire is provided with a trunk portion and one or more branch portions. In the trunk portion, an enamel coating layer is provided on a conductor. In each of the branch portions, a solder plating layer is provided on a conductor. The branch portion protrudes from the trunk portion in a lateral direction, and connected to an electrode of each of the solar battery cells. The branch portion connects the solar battery cells with each other.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Inventors: Seigi Aoyama, Takayuki Tsuji, Hiroshi Okikawa, Hajime Nishi
  • Publication number: 20070295528
    Abstract: A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of a surface the wiring conductor, and the Sn-based material part includes a base metal doped with a transformation retardant element and an oxidation control element. The transformation retardant element is at least one element selected from a group consisted of Sb, Bi, Cd, In, Ag, Au, Ni, Ti, Zr, and Hf. The oxidation control element is at least one element selected from a group consisted of Ge, P, Zn, Kr, Cr, Mn, Na, V, Si, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn, the transformation retardant element and the oxidation control element is diffused to form an alloy.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 27, 2007
    Applicant: HITACHI CABLE, LTD.
    Inventors: Hajime Nishi, Takayuki Tsuji, Hiroshi Yamanobe, Hiroshi Okikawa
  • Publication number: 20070235207
    Abstract: A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of its surface, and the Sn-based material part includes a base metal doped with an oxidation control element. The oxidation control element is at least one element selected from a group consisted of P, Ge, K, Zn, Cr, Mn, Na, V, Si, Ti, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn and the oxidation control element is diffused to form an alloy.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 11, 2007
    Applicant: HITACHI CABLE, LTD.
    Inventors: Takayuki Tsuji, Hiroshi Yamanobe, Hajime Nishi, Takeshi Usami, Seigi Aoyama, Masato Ito, Hiroshi Okikawa