Patents by Inventor Steven Y. Song

Steven Y. Song 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).

  • Low temperature (T lower than 950.degree. C.) preparation of melt texture YBCO superconductors
    Patent number: 5591698
    Abstract: A melt textured growth process for bulk YBCO at temperatures below 950.degree. C. is provided so that the material (YBCO) can be combined with silver to produce bulk superconductors by providing a combination of precursors that provide melting at 950.degree. C. or lower temperatures. After melting of the thoroughly mixed precursors, the sample is cooled in a controlled temperature environment. The process makes it possible to use metallic silver or other normal metals such as gold, as components in the fabrication of long YBCO wires and cables while achieving a high critical current density.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: January 7, 1997
    Assignee: University of Hawaii
    Inventors: Steven Y. Song, James R. Gaines