Patents by Inventor Kazuhiko Nakagawa

Kazuhiko Nakagawa 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: 20130053250
    Abstract: An Nb3Sn superconductor wire is manufactured by heating a precursor for an Nb3Sn superconductor wire. The precursor includes a Cu tube made of Cu or Cu-alloy, assemblies, each of which includes Nb filaments disposed in the Cu tube, and each of the Nb filaments includes an Nb core made of Nb or Nb-alloy. Each of the assemblies also includes Sn filaments disposed in the Cu tube, and each of the Sn filaments includes a Sn core made of Sn or Sn-alloy. The precursor also includes reinforcing filaments disposed in the Cu tube for dividing the assemblies such that the assemblies are not adjacent to each other. By heating the precursor, Sn in the Sn core is diffused into the Nb core to produce Nb3Sn.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Applicant: HITACHI CABLE, LTD.
    Inventors: Katsumi OHATA, Yoshihide WADAYAMA, Kazuhiko NAKAGAWA, Morio KIMURA
  • Publication number: 20120149579
    Abstract: A precursor for a Nb3Sn superconductor wire to be manufactured by the internal diffusion method. The precursor includes Nb-based single core wires, Sn-based single core wires, and a cylindrical diffusion barrier made of Ta or Nb. Each Nb-based single core wire includes a Nb-based core coated with a Cu-based coating made of a Cu-based matrix. Each Sn-based single core wire includes a Sn-based core coated with a Cu-based coating made of a Cu-based matrix. The Nb-based single core wires and the Sn-based single core wires are regularly disposed in the diffusion barrier. The Nb-based single core wires includes at least two kinds of Nb-based single core wires having different Cu/Nb ratios and the Cu/Nb ratio is a cross sectional area ratio of the Cu-based coating to the Nb-based core.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 14, 2012
    Applicant: HITACHI CABLE, LTD.
    Inventors: Yoshihide Wadayama, Katsumi Ohata, Kazuhiko Nakagawa, Morio Kimura
  • Publication number: 20120138149
    Abstract: A hot water supply system including a water heater that includes a storage unit storing at least device information of another water heater, and performs hot water supply control by which the water heater cooperates with the other water heater, these water heaters being able to supply hot water according to a hot water supply request; one or a plurality of the other water heater that is connected to the water heater in parallel, and supplies hot water according to the hot water supply control by the water heater; communication connection means that communicably connects the water heater and the other water heater; water supply means that supplies water to the water heater and the other water heater; and hot water supply means that supplies hot water heated by the water heater and the other water heater to a hot water supply destination.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 7, 2012
    Applicant: TAKAGI INDUSTRIAL CO., LTD.
    Inventors: Yasutaka Hatada, Kazuhiko Nakagawa, Katumi Naitoh
  • Patent number: 8182960
    Abstract: A metal separator for fuel cells formed with a metal plate and provided between cells accumulated, in which the metal plate is formed like trapezoidal irregularities to separate channels for a fuel gas from ones for an oxidant gas. Slope portions are formed after forming uniformly and thinly wall thickness of both upper and lower flat portions or either of the upper or the lower flat portion to 90% or less of that of the metal plate to be formed to obtain trapezoidal irregularities by forming flat portions which contact upper and lower cells and slope portions which interconnect the upper and the lower flat portions.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: May 22, 2012
    Assignee: Hitachi Cable, Ltd.
    Inventors: Masahiro Seido, Kazuhiko Nakagawa, Takaaki Sasaoka, Mineo Washima
  • Publication number: 20120108437
    Abstract: A precursor for a Nb3Sn superconductor wire is configured to be manufactured by the internal Sn diffusion method. The precursor includes a Cu tube including a barrier layer at an inner surface thereof. The barrier layer includes a metal selected from the group consisting of Ta, Ta-alloy, Nb and Nb-alloy. A plurality of Sn single cores are disposed in the Cu tube. Each of the Sn single cores includes Sn or Sn-alloy. A plurality of Nb single cores are also disposed in the Cu tube. Each of the Nb single cores includes Nb or Nb-alloy. The Sn single cores and the Nb single cores are arranged in the Cu tube such that the Sn single cores are not adjacent to each other.
    Type: Application
    Filed: September 2, 2011
    Publication date: May 3, 2012
    Applicant: Hitachi Cable, Ltd.
    Inventors: Katsumi Ohata, Morio Kimura, Kazuhiko Nakagawa, Katsumi Miyashita
  • Publication number: 20120090341
    Abstract: A water heater includes one or a plurality of heat pumps that heat tap water or return water from a hot water supply part, a circulation line that supplies hot water heated in the heat pumps to the hot water supply part, and introduces the return water from the hot water supply part to the heat pumps, an incoming water pipe that joins to between the hot water supply part in the circulation line and the heat pumps and supplies the tap water, a circulation pump that returns the return water to the heat pumps and circulates the return water through the circulation line, and a control unit that controls operation or stop of the circulation pump according to driving operation time or elapsed stop time by linking a combustion process of the heat pumps.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 19, 2012
    Applicant: TAKAGI INDUSTRIAL CO., LTD.
    Inventors: Yasutaka Hatada, Kazuhiko Nakagawa, Katumi Naitoh
  • Publication number: 20120083503
    Abstract: This invention relates to an antitumor agent comprising carboplatin and a combination drug of tegafur/gimeracil/oteracil potassium to be administered to a cancer patient selected according to an expression level of thymidylate synthase gene.
    Type: Application
    Filed: March 8, 2010
    Publication date: April 5, 2012
    Applicants: TAIHO PHARMACEUTICAL CO., LTD., KINKI UNIVERSITY
    Inventors: Kazuhiko Nakagawa, Isamu Okamoto
  • Patent number: 8039171
    Abstract: A current-collecting composite plate for a fuel cell configured with unit cells according to the present invention, which comprises: an insulator layer; and a plurality of pairs of conductor layers, the conductor layers being bonded to the insulator layer to be spaced apart from each other by a predetermined distance, each pair being used for adjacently disposed anode and cathode electrodes for a different one of the unit cells by sandwiching an electrolyte assembly therebetween. And, each conductor layer includes: a first conductor layer of a corrosion resistant metal treated with an electrically conductive surface treatment; a second conductor layer of a metal with low electrical resistivity; a through-hole penetrating the first conductor layer and the insulator layer; and a connecting portion formed of the second conductor layer for connecting the unit cells.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: October 18, 2011
    Assignee: Hitachi Cable, Ltd.
    Inventors: Masahiro Seido, Kazuhiko Nakagawa, Takaaki Sasaoka, Mineo Washima
  • Patent number: 7871737
    Abstract: A metal composite for fuel cells according to the present invention, which includes: a core of a metal; cladded layers of a corrosion resistant metal covering both surfaces of the core; and a through-hole formed through the core and cladded layers. The through-hole has, on a hole wall of the core region of the through-hole, a concave portion which is recessed relative to hole walls of the cladded layer regions of the through-hole.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: January 18, 2011
    Assignee: Hitachi Cable, Ltd.
    Inventors: Mineo Washima, Takaaki Sasaoka, Masahiro Seido, Kazuhiko Nakagawa
  • Patent number: 7862952
    Abstract: According to the present invention, there is provided a membrane electrode composite module including a membrane electrode composite formed by sandwiching both surfaces of an electrolyte membrane between gas diffusion electrodes, an anode current collecting plate having fuel flow holes through which fuel flows, and a cathode current collecting plate having oxygen flow holes through which oxygen flows, wherein both surfaces of the membrane electrode composite are sandwiched between the anode current collecting plate and the cathode current collecting plate, the membrane electrode composite module further including films made of a synthetic resin (a first film and a second film) which are a base of the anode current collecting plate and a base of the cathode current collecting plate.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: January 4, 2011
    Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.
    Inventors: Ryuji Kohno, Tatsuya Nagata, Makoto Kitano, Masahiro Seido, Kazuhiko Nakagawa
  • Publication number: 20100233705
    Abstract: The present invention relates to biomarkers to monitor the activity of the compound 3-Z-[1-(4-(N-((4-methyl-piperazin-1-yl)-methylcarbonyl)-N-methyl-amino)-anilino)-1-phenyl-methylene]-6-methoxycarbonyl-2-indolinone or a pharmaceutically acceptable salt thereof, and especially its monoethanesulphonate salt form, when used alone or optionally in combination with further pharmaceutically active ingredients and/or further treatments, such as for example radiotherapy.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 16, 2010
    Inventors: Tokuzo ARAO, Kanae KUDO, Kazuhiko NAKAGAWA, Kazuto NISHIO
  • Patent number: 7763393
    Abstract: A fuel cell having: a fuel electrode and an oxidant electrode disposed to sandwich a solid polymer electrolyte membrane; current collecting plates disposed outside of the fuel electrode and the oxidant electrode; a fuel electrode channel member disposed outside of the current collecting plate disposed outside of the fuel electrode; and an oxidant electrode channel member disposed outside of the current collecting plate disposed outside of the oxidant electrode. The oxidant electrode channel member has a thickness of not less than 1.2 mm. The fuel cell is a direct methanol type fuel cell.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: July 27, 2010
    Assignee: Hitachi Cable, Ltd.
    Inventors: Kazuhiko Nakagawa, Masahiro Seido, Mineo Washima, Takaaki Sasaoka, Kunihiro Fukuda, Katsumi Nomura
  • Publication number: 20100096117
    Abstract: A radiator plate includes a core having core surfaces and holes whose hole axes are directed in a direction along a normal direction of the core surface, and heat transfer plates joined to the core surfaces and filled in the holes. A multilayer radiator plate includes a first radiator plate including a first core having first core surfaces and first holes whose hole axes are directed in a direction along a normal direction of the first core surface and first heat transfer plates joined to the first core surfaces and filled in the first holes, a second radiator plate including a second core having second core surfaces and second holes whose hole axes are directed in a direction along a normal direction of the second core surface and second heat transfer plates joined to the second core surfaces and filled in the second holes, and the first radiator plate and the second radiator plate are joined to each other.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 22, 2010
    Inventors: Masahiro SEIDO, Kazuhiko Nakagawa, Chingping Tong
  • Publication number: 20090312187
    Abstract: A metallic thin film is wound around a core material made of a first metallic material in a predetermined number of windings to provide a first wire rod having a diameter which is applicable for roll forming in a longitudinal direction of the core material. The metallic thin film is formed by rolling a second metallic material and carrying out an annealing heat treatment on the rolled second metallic material. The first wire rod is cut to provide second wire rods, and the second wire rods are filled into a billet for multi-wires to provide a multi billet. The multi billet is extruded and drawn. Thereafter, a heat treatment is carried out on the drawn material to provide a superconducting wire.
    Type: Application
    Filed: May 4, 2009
    Publication date: December 17, 2009
    Applicant: Hitachi Cable, Ltd.
    Inventors: Masahiro Seido, Katsumi Ohata, Kazuhiko Nakagawa
  • Publication number: 20090297918
    Abstract: A board material for a fuel cell metallic separator includes a metallic substrate, an intermediate layer formed on a surface of the metallic substrate, and including titanium (Ti), and a Au layer formed on a surface of the intermediate layer, including pure gold (Au), and having an average thickness of not less than 1 nm and not more than 9 nm. A fuel cell metallic separator includes the board material that includes a concavo-convex shape.
    Type: Application
    Filed: February 2, 2009
    Publication date: December 3, 2009
    Applicant: Hitachi Cable, Ltd.
    Inventors: Takaaki Sasaoka, Masahiro Seidou, Kazuhiko Nakagawa, Mineo Washima
  • Publication number: 20090092878
    Abstract: A current-collecting composite plate for a fuel cell configured with unit cells according to the present invention, which comprises: an insulator layer; and a plurality of pairs of conductor layers, the conductor layers being bonded to the insulator layer to be spaced apart from each other by a predetermined distance, each pair being used for adjacently disposed anode and cathode electrodes for a different one of the unit cells by sandwiching an electrolyte assembly therebetween. And, each conductor layer includes: a first conductor layer of a corrosion resistant metal treated with an electrically conductive surface treatment; a second conductor layer of a metal with low electrical resistivity; a through-hole penetrating the first conductor layer and the insulator layer; and a connecting portion formed of the second conductor layer for connecting the unit cells.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 9, 2009
    Inventors: Masahiro Seido, Kazuhiko Nakagawa, Takaaki Sasaoka, Mineo Washima
  • Publication number: 20090081522
    Abstract: A metal composite for fuel cells according to the present invention, which includes: a core of a metal; cladded layers of a corrosion resistant metal covering both surfaces of the core; and a through-hole formed through the core and cladded layers. The through-hole has, on a hole wall of the core region of the through-hole, a concave portion which is recessed relative to hole walls of the cladded layer regions of the through-hole.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 26, 2009
    Inventors: Mineo Washima, Takaaki Sasaoka, Masahiro Seido, Kazuhiko Nakagawa
  • Publication number: 20090081520
    Abstract: A metal separator for fuel cells formed with a metal plate and provided between cells accumulated, in which the metal plate is formed like trapezoidal irregularities to separate channels for a fuel gas from ones for an oxidant gas. Slope portions are formed after forming uniformly and thinly wall thickness of both upper and lower flat portions or either of the upper or the lower flat portion to 90% or less of that of the metal plate to be formed to obtain trapezoidal irregularities by forming flat portions which contact upper and lower cells and slope portions which interconnect the upper and the lower flat portions.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 26, 2009
    Inventors: Masahiro Seido, Kazuhiko Nakagawa, Takaaki Sasaoka, Mineo Washima
  • Patent number: 7399532
    Abstract: A corrosive resistant metal material covered with a conductive substance suitable for use in a component material requiring conductivity and corrosion resistance like electrical conductive material, electrical contact, electromagnetic wave shield, electrochemical electrode or antistatic material, specifically for component material requiring conductivity in sever condition of corrosive environment is provided. A corrosive resistant metal material covered with a conductive substance is formed by cladding a corrosive resistant metal selected from the group consisting of titanium, zirconium, tantalum, niobium and alloy thereof on a conductive metal selected from the group consisting of iron, aluminum, copper, titanium, magnesium, zirconium, tantalum, niobium, tungsten, nickel, chrome and alloy thereof, and covering a conductive surface finishing layer over surface of a corrosive resistant metal layer with a mixture of conductive substance and resinous binder.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: July 15, 2008
    Assignees: Hitachi Cable, Ltd., Hitachi Powdered Metals Co., Ltd.
    Inventors: Masahiro Seido, Tatsuya Tonogi, Kazuhiko Nakagawa, Minoru Shirahige, Masahiro Okahara
  • Publication number: 20060269821
    Abstract: A fuel cell having: a fuel electrode and an oxidant electrode disposed to sandwich a solid polymer electrolyte membrane; current collecting plates disposed outside of the fuel electrode and the oxidant electrode; a fuel electrode channel member disposed outside of the current collecting plate disposed outside of the fuel electrode; and an oxidant electrode channel member disposed outside of the current collecting plate disposed outside of the oxidant electrode. The oxidant electrode channel member has a thickness of not less than 1.2 mm. The fuel cell is a direct methanol type fuel cell.
    Type: Application
    Filed: May 12, 2006
    Publication date: November 30, 2006
    Inventors: Kazuhiko Nakagawa, Masahiro Seido, Mineo Washima, Takaaki Sasaoka, Kunihiro Fukuda, Katsumi Nomura