Patents by Inventor J. T. Vaughey

J. T. Vaughey 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).

  • Preparation and composition of superconducting copper oxides based on Ga-O layers
    Patent number: 5374611
    Abstract: A high temperature superconducting material with the general formula GaSr.sub.2 Ln.sub.1-x MxCu.sub.2 O.sub.7.+-.w wherein Ln is selected from the group consisting of La, Ce, Pt, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y and M is selected from the group consisting of Ca and Sr, 0.2.ltoreq.x.ltoreq.0.4 and w is a small fraction of one. A method of preparing this high temperature superconducting material is provided which includes heating and cooling a mixture to produce a crystalline material which is subsequently fired, ground and annealed at high pressure and temperature in oxygen to establish superconductivity.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: December 20, 1994
    Assignees: The University of Chicago, Northwestern University
    Inventors: Bogdan Dabrowski, J. T. Vaughey, Kenneth R. Poeppelmeier