Patents by Inventor Cha Y. Chu

Cha Y. Chu 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).

  • Sealed glass coating of high temperature ceramic superconductors
    Patent number: 5411938
    Abstract: A method and article of manufacture of a lead oxide based glass coating on a high temperature superconductor. The method includes preparing a dispersion of glass powders in a solution, applying the dispersion to the superconductor, drying the dispersion before applying another coating and heating the glass powder dispersion at temperatures below oxygen diffusion onset and above the glass melting point to form a continuous glass coating on the superconductor to establish compressive stresses which enhance the fracture strength of the superconductor.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: May 2, 1995
    Assignee: University of Chicago
    Inventors: Weite Wu, Cha Y. Chu, Kenneth C. Goretta, Jules L. Routbort