Patents by Inventor Akifumi Matsuda

Akifumi Matsuda 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 switch, superconducting magnet and MRI
    Patent number: 8855731
    Abstract: A superconducting switch is provided in which the structural strength of the superconducting switch is kept, and thermal efficiency between a superconducting film and a heater is high when an ON state (superconducting state) and an OFF state (normal conducting state) of the superconducting switch are switched. The superconducting switch includes a substrate, a heater for generating heat by energization, a conductive film, and a MgB2 film evaporated on the conductive film. The heater, the conductive film and the MgB2 film are laminated in this order on one surface of the substrate.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: October 7, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Hideki Tanaka, Tsuyoshi Wakuda, Motomune Kodama, Akifumi Matsuda
  • SUPERCONDUCTING SWITCH, SUPERCONDUCTING MAGNET AND MRI
    Publication number: 20130012392
    Abstract: A superconducting switch is provided in which the structural strength of the superconducting switch is kept, and thermal efficiency between a superconducting film and a heater is high when an ON state (superconducting state) and an OFF state (normal conducting state) of the superconducting switch are switched. The superconducting switch includes a substrate, a heater for generating heat by energization, a conductive film, and a MgB2 film evaporated on the conductive film. The heater, the conductive film and the MgB2 film are laminated in this order on one surface of the substrate.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 10, 2013
    Applicant: HITACHI, LTD.
    Inventors: Hideki Tanaka, Tsuyoshi Wakuda, Motomune Kodama, Akifumi Matsuda