Patents by Inventor Frederick M. Mueller

Frederick M. Mueller 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).

  • Method and apparatus for measuring current density in conductive materials
    Publication number: 20090006015
    Abstract: The present invention relates to an apparatus and method for measuring a current density in a conductive material. The apparatus and method use an algorithm and an extension to the Fourier transform approach that allows transport currents to be treated accurately. Due to its speed, the resulting algorithm is ideally suited for high-resolution and high-throughput magnetic imaging of superconducting tape in real time.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Frederick M. Mueller, Holger Grube, Geoffrey W. Brown, Marilyn E. Hawley, J. Yates Coulter
  • 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