Patents by Inventor Tsukasa Kiyoshi

Tsukasa Kiyoshi 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: 9543754
    Abstract: An object of the present invention is to provide a method for protecting a superconducting coil, which method prevents damage to the superconducting coil caused by a quench or the like, in a new way, without using a voltage (a change in voltage) generated in the superconducting coil. Provided is the method for protecting a superconducting coil made by winding tape-like superconducting wire having a superconducting layer. Power from a power supply is shut off based on the magnitude of a screening field, which is a difference between a measured magnetic field B in a direction of a thickness of the superconducting wire at a predetermined position, and a magnetic field Bcal in the direction of the thickness of the superconducting wire calculated disregarding an effect of screening current.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 10, 2017
    Assignees: National Institute for Materials Science, Japan Superconductor Technology, Inc.
    Inventors: Davide Uglietti, Tsukasa Kiyoshi, Shinji Matsumoto, Mamoru Hamada
  • Publication number: 20140235451
    Abstract: An object of the present invention is to provide a method for protecting a superconducting coil, which method prevents damage to the superconducting coil caused by a quench or the like, in a new way, without using a voltage (a change in voltage) generated in the superconducting coil. Provided is the method for protecting a superconducting coil made by winding tape-like superconducting wire having a superconducting layer. Power from a power supply is shut off based on the magnitude of a screening field, which is a difference between a measured magnetic field B in a direction of a thickness of the superconducting wire at a predetermined position, and a magnetic field Bcal in the direction of the thickness of the superconducting wire calculated disregarding an effect of screening current.
    Type: Application
    Filed: March 7, 2014
    Publication date: August 21, 2014
    Applicants: Japan Superconductor Technology, Inc., National Institute for Materials Science
    Inventors: Davide Uglietti, Tsukasa Kiyoshi, Shinji Matsumoto, Mamoru Hamada
  • Patent number: 7286033
    Abstract: A strong-magnetic-force field generating device is provided which can increase a magnetic force field and which can make the magnetic force field spatially uniform without adding an additional superconducting magnet to a commercially-available superconducting magnet. In the strong-magnetic-force field generating device, a disc ferromagnetic element is arranged inside a bore and above the equatorial plane thereof in a solenoid superconducting magnet, whose central axis is directed in a vertical direction, so as to be symmetric with respect to the central axis; and a ring ferromagnetic element is arranged above the disc ferromagnetic element so as to be out of contact with the disc ferromagnetic element and so as to be symmetric with respect to the central axis.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: October 23, 2007
    Assignees: Japan Science and Technology Corporation, National Institute for Materials Science
    Inventors: Osamu Ozaki, Tsukasa Kiyoshi, Shinji Matsumoto, Hitoshi Wada
  • Patent number: 7090478
    Abstract: An apparatus for manufacturing an anisotropic formed body in which functional, magnetic fine particles are oriented in a specific direction within a matrix and in which anisotropy is given to properties attributable to the functional fine particles. The apparatus allows use of a wide variety of materials as the functional fine particles and realizes an anisotropy which is parallel and of a uniform interval within a large area. Further, a method for manufacturing an anisotropic formed body, includes applying, by using a superconducting magnet device, a uniform and parallel magnetic field with magnetic lines of force at equal intervals and parallel to each other, to a mold in which the matrix is filled with a liquid molding material containing functional, magnetic fine particles, to orient the functional fine particles in a direction of the magnetic lines of force, whereby the liquid molding material subsequently hardens.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: August 15, 2006
    Assignees: Independent Administrative Institution National Institute for Materials Science, Polymatech Co., Ltd.
    Inventors: Hitoshi Wada, Tsukasa Kiyoshi, Masayuki Tobita, Eiji Homma, Hideaki Konno
  • Publication number: 20040164462
    Abstract: An apparatus for manufacturing an anisotropic formed body in which functional, magnetic fine particles are oriented in a specific direction within a matrix and in which anisotropy is given to properties attributable to the functional fine particles. The apparatus allows use of a wide variety of materials as the functional fine particles and realizes an anisotropy which is parallel and of a uniform interval within a large area. Further, a method for manufacturing an anisotropic formed body, includes applying, by using a superconducting magnet device, a uniform and parallel magnetic field with magnetic lines of force at equal intervals and parallel to each other, to a mold in which the matrix is filled with a liquid molding material containing functional, magnetic fine particles, to orient the functional fine particles in a direction of the magnetic lines of force, whereby the liquid molding material subsequently hardens.
    Type: Application
    Filed: August 22, 2003
    Publication date: August 26, 2004
    Inventors: Hitoshi Wada, Tsukasa Kiyoshi, Masayuki Tobita, Eiji Homma, Hideaki Konno
  • Publication number: 20040119568
    Abstract: A strong-magnetic-force field generating device is provided which can increase a magnetic force field and which can make the magnetic force field spatially uniform without adding an additional superconducting magnet to a commercially-available superconducting magnet.
    Type: Application
    Filed: February 12, 2004
    Publication date: June 24, 2004
    Inventors: Osamu Ozaki, Tsukasa Kiyoshi, Shinji Matsumoto, Hitoshi Wada
  • Patent number: 6362712
    Abstract: Magnets comprising main magnets formed by arranging a single main magnet or plural main magnets, and auxiliary magnets for uniformalizing the magnetic force of the main magnets in a predetermined space. The magnets uniformalize the magnetic force in space.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: March 26, 2002
    Assignees: Japan Science and Technology Corporation, Japan as represented by Director General of National Reseacrh Institute for Metals, Japan as represented by Director General of Agency of Industrial Science and Technology
    Inventors: Tsukasa Kiyoshi, Hitoshi Wada, Nobuko Wakayama