Patents by Inventor Guifu Sun

Guifu Sun 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).

  • Tl-doped HgBaCaCu superconductors
    Patent number: 5556830
    Abstract: Improved superconducting oxides are provided having the general formula (Hg.sub.1-x Tl.sub.x)Ba.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+2+.alpha. where x is from about 0.05-0.5 and n is 1, 2, 3 or 4, and .alpha. is an oxygen enrichment factor. The Tl-doped oxides exhibit very high T.sub.c and J.sub.c values.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: September 17, 1996
    Assignee: Midwest Superconductivity, Inc.
    Inventors: Guifu Sun, Kai W. Wong, Ying Xin