Patents by Inventor Henry E. Chia

Henry E. Chia 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).

  • Process for degassing aluminum and aluminum alloys
    Patent number: 3958981
    Abstract: The process for degassing aluminum and aluminum alloys comprising treating the molten metal with a gaseous mixture consisting essentially of fluorine, hydrofluoric acid, carbon monoxide and carbon dioxide. Fluorine, hydrofluoric acid, carbon monoxide and carbon dioxide are produced during the electrolytic reduction of alumina to form aluminum, therefore, the gaseous mixture resulting from this electrolytic reduction may be used to degas aluminum and aluminum alloys.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: May 25, 1976
    Assignees: Southwire Company, National Steel Corporation
    Inventors: Helge O. Forberg, Henry E. Chia, Paul S. Keith