Patents by Inventor Xiao Zhou Liao

Xiao Zhou Liao 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).

  • Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP)
    Patent number: 6511943
    Abstract: A process of preparing superconducting magnesium diboride powder by heating an admixture of solid magnesium and amorphous boron powder or pellet under an inert atmosphere in a Mg:B ratio of greater than about 0.6:1 at temperatures and for time sufficient to form said superconducting magnesium diboride. The process can further include exposure to residual oxygen at high synthesis temperatures followed by slow cooling. In the cooling process oxygen atoms dissolved into MgB2 segregated to form nanometer-sized coherent Mg(B,O) precipitates in the MgB2 matrix, which can act as flux pinning centers.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: January 28, 2003
    Assignee: The Regents of the University of California
    Inventors: Adriana C. Serquis, Yuntian T. Zhu, Frederick M. Mueller, Dean E. Peterson, Xiao Zhou Liao