Patents by Inventor Koso Fujino

Koso Fujino 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: 7544273
    Abstract: A method of making a film having a uniform thickness and having a crystal axis parallel to a main surface of a substrate is described. In a deposition method, a film is formed by scattering a deposition material from a target (12) surface and growing the scattered deposition material on a main surface (100a) of a substrate (100). The method includes the steps of positioning the substrate (100) into a first state where the distance between one end (100f) and the target (12) is small and the distance between the other end (100e) and the target material (12) is relatively large, forming a first film (110) on the substrate (100) in the first state, positioning the substrate (100) into a second state where the distance between one end (100f) and the target (12) is large and the distance between the other end (100e) and the target (12) is small, and. forming a second film (120) on the first film (110) in the second state.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: June 9, 2009
    Assignees: Sumitomo Electric Industries, Ltd., International Superconductivity Technology
    Inventors: Takahiro Taneda, Koso Fujino, Kazuya Ohmatsu
  • Publication number: 20080287302
    Abstract: A method of producing a superconducting wire comprises the steps of (a) preparing a superconducting precursor powder by treating a material powder for a superconducting use, (b) packing a first metal pipe with the superconducting precursor powder, and (c) sealing the first metal pipe. In the method, the step of packing the first metal pipe and the step of sealing the first metal pipe are performed in an atmosphere under a reduced pressure to reliably perform a degassing treatment of the superconducting powder. Thus, a method of producing a superconducting wire excellent in superconducting property, particularly a critical current, is offered. A production method of a superconducting multifilament wire is offered. A superconducting apparatus produced through these methods is offered.
    Type: Application
    Filed: March 1, 2006
    Publication date: November 20, 2008
    Inventor: Koso Fujino
  • Publication number: 20070116859
    Abstract: A method of manufacturing an oxide superconductive wire includes the step of positioning a metal tape in a position at a distance (L) of at most 100 mm from a target for generating an oxide, and the step of forming an oxide superconductive layer on the metal tape using a vapor deposition method while transferring the metal tape at a transfer speed of at least 5 m/h with keeping the distance (L) between the metal tape and the target of at most 100 mm.
    Type: Application
    Filed: July 1, 2004
    Publication date: May 24, 2007
    Inventors: Shuji Hahakura, Kazuya Ohmatsu, Masaya Konishi, Koso Fujino
  • Publication number: 20060219322
    Abstract: A superconducting wire formed of a metal substrate and an overlying superconducting layer, the metal substrate being a textured metal substrate and planarized to have a surface layer extending from a surface thereof to a depth of 300 nm with a crystal axis offset relative to an orientation axis by at most 25° and a surface roughness RP-V of at most 150 nm, and a method of producing the wire. The surface layer's biaxial texture can be maintained while the substrate can have a surface planarized, and a highly superconductive wire and achieve a method of producing the same can thus be achieved.
    Type: Application
    Filed: July 13, 2004
    Publication date: October 5, 2006
    Inventors: Koso Fujino, Kazuya Ohmatsu, Masaya Konishi, Shuji Hahakura
  • Publication number: 20040224851
    Abstract: An oxide superconductor of the present invention characterized in that it comprises: a substrate 1 made of metals having a high melting temperature; at least one oxide intermediate layer 2 and 3 which is formed on at least one surface of the substrate 1; and a thick film oxide superconductor layer 5 which is formed on the oxide intermediate layer 2 and 3 by the liquid phase epitaxial method in which the substrate 1 provided with the oxide intermediate layer 2 and 3 is put into a solution 7 containing the elements comprising an oxide superconductor layer, and is then pulled out from the solution 7.
    Type: Application
    Filed: April 26, 2004
    Publication date: November 11, 2004
    Inventors: Kazuomi Kakimoto, Natsuro Hobara, Teruo Izumi, Yuh Shiohara, Yuichi Nakamura, Kazuya Ohmatsu, Koso Fujino
  • Patent number: 6743533
    Abstract: An oxide superconductor of the present invention characterized in that it comprises: a substrate 1 made of metals having a high melting temperature; at least one oxide intermediate layer 2 and 3 which is formed on at least one surface of the substrate 1; and a thick film oxide superconductor layer 5 which is formed on the oxide intermediate layer 2 and 3 the liquid phase epitaxial method in which the substrate 1 provided with the oxide intermediate layer 2 and 3 is put into a solution 7 containing the elements comprising an oxide superconductor layer, and is then pulled out from the solution 7.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: June 1, 2004
    Assignees: Fujikura Ltd., Tokyo Electric Power Company, Inc., Railway Technical Research Institute, Sumitomo Electric Industries, Ltd., International Superconductivity Technology Center
    Inventors: Kazuomi Kakimoto, Natsuro Hobara, Teruo Izumi, Yuh Shiohara, Yuichi Nakamura, Kazuya Ohmatsu, Koso Fujino
  • Publication number: 20040067386
    Abstract: A film having a uniform thickness and having a crystal axis parallel to a main surface of a substrate is manufactured. In a deposition method, a film is formed by scattering a deposition material from a target (12) surface and growing the scattered deposition material on a main surface (100a) of a substrate (100). The method includes the steps of positioning the substrate (100) into a first state where the distance between one end (100f) and the target (12) is small and the distance between the other end (100e) and the target material (12) is relatively large, forming a first film (110) on the substrate (100) in the first state, positioning the substrate (100) into a second state where the distance between one end (100f) and the target (12) is large and the distance between the other end (100e) and the target (12) is small, and forming a second film (120) on the first film (110) in the second state.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 8, 2004
    Inventors: Takahiro Taneda, Koso Fujino, Kazuya Ohmatsu