Patents by Inventor Ann F. Marshall

Ann F. Marshall 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).

  • High-temperature superconductors
    Patent number: 5217947
    Abstract: Novel superconducting oxide compositions of the formulas (YBa.sub.2 Cu.sub.3.25).sub.a O.sub.z and Y.sub.2 Ba.sub.4 Cu.sub.8 O.sub.20-x (248) are provided which can have an ordered defect structure stacked on one axis. MiThis invention was made with Government support under contracts DMR-8616055 awarded by the National Science Foundation and F49620-88C-0004 awarded by the United States Air Force. The Government has certain rights in this invention.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: June 8, 1993
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Roger W. Barton, Ann F. Marshall, Kookrin Char, Aharon Kapitulnik, Stephen S. Laderman, Mark Lee, Robert Hammond