Patents by Inventor J. Richard Semk

J. Richard Semk 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).

  • Aluminum scrap recovery by inductively moving molten metal
    Patent number: 5032171
    Abstract: A method for removing dissolved alkali metals and alkaline earth metals from aluminum is disclosed. The method comprises providing a body of molten aluminum containing the alkali metal and alkaline earth metals in a container and inductively moving the molten aluminum in upper regions of the body in a generally downward direction at outward regions of the body and in a generally upward direction in inner regions of the body. Fluoride values are added to the body to react with the alkali metals or alkaline earth metals.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: July 16, 1991
    Assignee: Aluminum Company of America
    Inventors: Thomas J. Robare, Jeffrey B. Gorss, Robert A. Gutknecht, J. Richard Semk