Patents by Inventor Hirao Hirata

Hirao Hirata 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: 9251932
    Abstract: A terminal connecting part has: a low temperature container filled with a cooling medium; a conductor current lead which has one end immersed in the cooling medium and the other end led to a normal temperature part; and a conductor movable connecting terminal which electrically connects a superconductive conductor layer and the conductor current lead of a superconducting cable. The superconductive conductor layer of the superconducting cable stripped stepwise from a front end is connected to the conductor current lead through the conductor movable connecting terminal. The cable core of the superconducting cable is movable in a longitudinal direction and is rotatable in a circumferential direction while maintaining electrical connection between the superconductive conductor layer and the conductor current lead. The cable core is horizontally supported in the low temperature container.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: February 2, 2016
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masashi Yagi, Takaharu Mitsuhashi, Tomoya Nomura, Shinichi Mukoyama, Hirao Hirata, Tokui Yonemura, Shuka Yonemura
  • Patent number: 9123455
    Abstract: A connection structure for superconducting cables includes: superconducting cables that are connected to each other and include cable cores containing formers and superconducting conductor layers, and each cable core is housed in a thermal insulation tube with a cooling medium, wherein the cable cores include electric insulating layers obtained by winding insulating sheets around the superconducting conductor layers, the electric insulating layers on both sides of a conductor connecting part, in which the formers and the superconducting conductor layers are connected to each other, include taper shape portions each having a diameter reducing towards the conductor connecting part, each taper shape portion is formed so as to have an inclination angle changing in a stepwise fashion by a plurality of tapered portions among which a tapered portion nearer the conductor connecting part has smaller inclination angle, and a reinforcing insulating layer is provided between the taper shape portions.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: September 1, 2015
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masashi Yagi, Tomoya Nomura, Hirao Hirata, Takaharu Mitsuhashi
  • Publication number: 20150031546
    Abstract: A connection structure for superconducting cables includes: superconducting cables that are connected to each other and include cable cores containing formers and superconducting conductor layers, and each cable core is housed in a thermal insulation tube with a cooling medium, wherein the cable cores include electric insulating layers obtained by winding insulating sheets around the superconducting conductor layers, the electric insulating layers on both sides of a conductor connecting part, in which the formers and the superconducting conductor layers are connected to each other, include taper shape portions each having a diameter reducing towards the conductor connecting part, each taper shape portion is formed so as to have an inclination angle changing in a stepwise fashion by a plurality of tapered portions among which a tapered portion nearer the conductor connecting part has smaller inclination angle, and a reinforcing insulating layer is provided between the taper shape portions.
    Type: Application
    Filed: April 15, 2013
    Publication date: January 29, 2015
    Inventors: Masashi Yagi, Tomoya Nomura, Hirao Hirata, Takaharu Mitsuhashi
  • Patent number: 8260388
    Abstract: A current terminal structure of a superconductor has a former, and a superconducting wire wound around the former in one or more layers and including a substrate and a superconducting layer formed on the substrate. A first layer superconducting wire wound around immediately above the former is arranged so that a substrate side thereof becomes outside and a superconducting layer side thereof becomes inside. A surface of the superconducting layer at an end of the first layer superconducting wire, which is directed toward the inside, and part of a surface of the superconducting layer of a connection superconducting wire, which is directed toward the outside, are faced and connected to each other.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 4, 2012
    Assignees: International Superconductivity Technology Center, Furukawa Electric Co., Ltd
    Inventors: Masashi Yagi, Hirao Hirata, Mitsuo Suzuki, Shinichi Mukoyama, Yuh Shiohara
  • Patent number: 8188010
    Abstract: A thin film superconductive wire material (16) and an electro conductive tape (15) are immersed in a solder bath (35) containing a solder, which includes Sn(tin) and Bi (bismuth), to bond the thin film superconductive wire material (16) and the electro conductive tape (15) and a composite superconductive wire material (10) is formed.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: May 29, 2012
    Assignees: The Furukawa Electric Co., Ltd., International Superconductivity Center, The Juridical Foundation
    Inventors: Masashi Yagi, Hirao Hirata, Shinichi Mukoyama, Yuh Shiohara
  • Publication number: 20120015816
    Abstract: A current terminal structure of a superconductor has a former, and a superconducting wire wound around the former in one or more layers and including a substrate and a superconducting layer formed on the substrate. A first layer superconducting wire wound around immediately above the former is arranged so that a substrate side thereof becomes outside and a superconducting layer side thereof becomes inside. A surface of the superconducting layer at an end of the first layer superconducting wire, which is directed toward the inside, and part of a surface of the superconducting layer of a connection superconducting wire, which is directed toward the outside, are faced and connected to each other.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicants: INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER, FURUKAWA ELECTRIC CO., LTD
    Inventors: Masashi Yagi, Hirao Hirata, Mitsuo Suzuki, Shinichi Mukoyama, Yuh Shiohara
  • Publication number: 20090233799
    Abstract: A thin film superconductive wire material (16) and an electro conductive tape (15) are immersed in a solder bath (35) containing a solder, which includes Sn(tin) and Bi(bismuth), to bond the thin film superconductive wire material (16) and the electro conductive tape (15) and a composite superconductive wire material (10) is formed.
    Type: Application
    Filed: February 2, 2009
    Publication date: September 17, 2009
    Applicants: THE FURUKAWA ELECTRIC CO., LTD., Int. Superconductivity Tech Ctr the Juridical Fdn.
    Inventors: Masashi YAGI, Hirao Hirata, Shinichi Mukoyama, Yuh Shiohara