Patents by Inventor Walter W. Hill

Walter W. Hill 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 purification
    Patent number: 4115215
    Abstract: A process for purifying aluminum alloys comprises providing molten aluminum alloy in a container having a porous wall therein capable of containing molten aluminum in the container and being permeable by the molten electrolyte. Aluminum is electrolytically transported through the porous wall to a cathode thereby substantially separating the aluminum from alloying constituents.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: September 19, 1978
    Assignee: Aluminum Company of America
    Inventors: Subodh K. Das, C. Norman Cochran, Richard A. Milito, Robert M. Mazgaj, Walter W. Hill
  • Aluminum purification
    Patent number: RE30330
    Abstract: A process for purifying aluminum alloys comprises providing molten aluminum alloy in a container having a porous wall therein capable of containing molten aluminum in the container and being permeable by the molten electrolyte. Aluminum is electrolytically transported through the porous wall to a cathode thereby substantially separating the aluminum from alloying constituents.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: July 8, 1980
    Assignee: Aluminum Company of America
    Inventors: Subodh K. Das, C. Norman Cochran, Richard A. Milito, Robert M. Mazgaj, Walter W. Hill