Patents by Inventor Misao Koizumi

Misao Koizumi 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).

  • Superconducting wire and method of manufacturing the same
    Patent number: 6170147
    Abstract: A starting material which is converted to a continuous body of an oxide superconductor by a heat treatment is filled in a tubular Ag sheath member. The diameter of the filled member is reduced by extrusion to form a wire. The wire is subjected to a heat treatment so that the starting material inside the sheath member is converted to a continuous body of an oxide superconductor. A superconducting wire constituted by the sheath member and the oxide superconductor filled inside the sheath member is obtained. A superconducting coil can be obtained by winding the superconducting wire.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 9, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Yamada, Satoru Murase, Hisashi Yoshino, Noburu Fukushima, Hiromi Niu, Shigeo Nakayama, Misao Koizumi
  • Superconducting wire and method of manufacturing the same
    Patent number: 5935911
    Abstract: A starting material which is converted to a continuous body of an oxide superconductor by a heat treatment is filled in a tubular Ag sheath member. The diameter of the filled member is reduced by extrusion to form a wire. The wire is subjected to a heat treatment so that the starting material inside the sheath member is converted to a continuous body of an oxide superconductor. A superconducting wire constituted by the sheath member and the oxide superconductor filled inside the sheath member is obtained. A superconducting coil can be obtained by winding the superconducting wire.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 10, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Yamada, Satoru Murase, Hisashi Yoshino, Noburu Fukushima, Hiromi Niu, Shigeo Nakayama, Misao Koizumi
  • Soldered superconductive coils for a pulse magnet
    Patent number: 4586012
    Abstract: A superconductor for a pulsed magnet has a wire assembly including a plurality of superconducting wires individually bonded with a solder. The solder consists of an Sn-Pb alloy containing indium and/or bismuth. When this solder is used, a coupling current induced between the superconducting wires can be reduced to an acceptable value.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: April 29, 1986
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Misao Koizumi, Satoru Murase