Patents by Inventor William Joel Huebner

William Joel Huebner 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).

  • Recovery of aluminum and/or fluoride values from used aluminum chlorofluorides
    Patent number: 5663478
    Abstract: A process is disclosed for treating used aluminum chlorofluoride catalyst either alone or mixed with organics. It involves forming a solution of the catalyst in water or an aqueous acid and then adjusting the pH and/or composition of the aqueous phase formed to precipitate compounds containing the aluminum and/or fluorine.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: September 2, 1997
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: William Henry Gumprecht, William Joel Huebner