Patents by Inventor Greg Piefer

Greg Piefer 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).

  • SEPARATION OF RARE EARTH ELEMENTS
    Publication number: 20230227942
    Abstract: A method for purifying lutetium includes providing a solid composition comprising ytterbium and lutetium and subliming or distilling ytterbium from the solid composition at a temperature of about 1196° C. to about 3000° C. to leave a lutetium composition comprising a higher weight percentage of lutetium than was present in the solid composition.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 20, 2023
    Inventors: Richard Sisson, Eric Van Abel, Thomas Drury, Charles Shackett, Greg Piefer