Patents by Inventor Tamaki Masegi

Tamaki Masegi 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).

  • Oxide superconductor and method of manufacturing the same
    Patent number: 5974336
    Abstract: An oxide superconductor comprises a base material consisting of a single crystalline oxide, an oxide superconductor film consisting of a Y123 compound and formed on the single crystalline oxide base material, and a coating film consisting essentially of a Ba--Cu--O oxide and covering the surface of the oxide superconductor film, the coating film having a thermal expansion coefficient higher than that of the oxide superconductor film.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: October 26, 1999
    Assignees: Kabushiki Kaisha Toshiba, International Superconductivity Technology Center
    Inventors: Yasuji Yamada, Tamaki Masegi, Junichi Kawashima, Yusuke Niiori, Izumi Hirabayashi
  • Superconducting magnet apparatus
    Patent number: 5686876
    Abstract: The superconducting magnet apparatus includes a cryostat, a superconducting coil provided in the cryostat, and a current lead having a portion made of an oxide superconductor, for supplying a current to the superconducting coil. The portion of the current lead which is made of the oxide superconductor has a high-temperature end and a low-temperature end, and the current lead is arranged such that the direction of a current flow in at least the high-temperature end and the direction of a leakage magnetic flux applied from the superconducting coil to the high-temperature end are made substantially in parallel to each other.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: November 11, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Yamamoto, Tamaki Masegi, Yutaka Yamada, Shunji Nomura, Toru Kuriyama, Takashi Yazawa