Patents by Inventor Frederick Carl Schwerer, III

Frederick Carl Schwerer, III 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).

  • Method of separating superalloy metal powder from admixed contaminants
    Patent number: 7056400
    Abstract: A method is provided for separating superalloy metal powder from contaminants, such as process-produced contaminants, by enhancing the magnetic properties thereof, such as by oxidizing or leaching of chromium, for example, followed by magnetic separation of the contaminants from the superalloy metal powder to thereby enhance the concentration of the contaminants. Heating conditions or mechanical agitation or both are employed to resist agglomeration of the metal powder before magnetic separation thereof from the contaminants. Certain preferred times and temperatures are disclosed.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: June 6, 2006
    Assignee: R. J. Lee Group, Inc.
    Inventors: Charles E. Spangler, Jr., Frederick Carl Schwerer, III, William J. Murphy