Patents by Inventor William L. Feldmann

William L. Feldmann 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).

  • Manufacture of niobium-aluminum superconducting material
    Patent number: 4391657
    Abstract: Niobium-aluminum superconducting wire and other shaped articles are made by heating a precursor body which comprises niobium, an auxiliary element which is more easily oxidizable than aluminum, and aluminum oxide, the aluminum oxide being supported by a surface or a matrix comprising niobium and the auxiliary element. Among suitable auxiliary elements are zirconium, hafnium, scandium, yttrium, and the nonmagnetic rare earths.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: July 5, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: William L. Feldmann, John M. Rowell, Paul H. Schmidt