Patents by Inventor Deniece R. Korzekwa

Deniece R. Korzekwa 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).

  • Purification of tantalum by plasma arc melting
    Patent number: 5972065
    Abstract: Purification of tantalum by plasma arc melting. The level of oxygen and carbon impurities in tantalum was reduced by plasma arc melting the tantalum using a flowing plasma gas generated from a gas mixture of helium and hydrogen. The flowing plasma gases of the present invention were found to be superior to other known flowing plasma gases used for this purpose.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 26, 1999
    Assignee: The Regents of the University of California
    Inventors: Paul S. Dunn, Deniece R. Korzekwa