Patents by Inventor Irmgard M. Schewe-Miller

Irmgard M. Schewe-Miller 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).

  • Reactive sputter deposition of lead chevrel phase thin films
    Patent number: 5421973
    Abstract: A method is provided to form a lead Chevrel phase coating of the formula PbMo.sub.6 S.sub.8 on a substrate by employing the techniques of reactive sputtering comprising: (a) sputtering lead (Pb) and molybdenum (Mo) from homogeneous targets of Pb and Mo in vacuo in an atmosphere of argon and hydrogen sulfide so as to deposit a coating of PbMo.sub.6 S.sub.8 on said substrate; and (b) annealing said PbMo.sub.6 S.sub.8 coating at a pressure at which Pb is not lost from the coating; wherein the targets and the substrate are contained within a vacuum chamber during steps (a) and (b).
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: June 6, 1995
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Kwan F. Koo, Irmgard M. Schewe-Miller, Glenn L. Schrader