Patents by Inventor Yoshiyasu Sekita

Yoshiyasu Sekita 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).

  • Copper-based high-temperature superconducting material
    Patent number: 6300284
    Abstract: A copper-based high-temperature superconducting material includes a carrier supply layer overdoped with carriers; and a superconducting layer comprised of at least three CuO2 layers that are selectively doped with the carriers; whereby a high superconducting transition temperature (Tc) is maintained to be not less than 116 K, critical current density (Jc) is improved to be 5×106 A/cm2 (77 K, 0 T), and irreversible field (Hirr) is improved to be not less than 7 T.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: October 9, 2001
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Hideo Ihara, Yoshiyasu Sekita