Patents by Inventor Wallis F. Calaway, Jr.

Wallis F. Calaway, Jr. 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 to decrease loss of aluminum and magnesium melts
    Patent number: 6485541
    Abstract: A method to minimize oxidation of metal during melting processes is provided, the method comprising placing solid phase metal into a furnace environ-ment, transforming the solid-phase metal into molten metal phase having a molten metal surface, and creating a barrier between the surface and the environment. Also provided is a method for isolating the surface of molten metal from its environment, the method comprising confining the molten metal to a controlled atmos-phere, and imposing a floating substrate between the surface and the atmosphere.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: November 26, 2002
    Assignee: The University of Chicago
    Inventors: John N. Hryn, Michael J. Pellin, Wallis F. Calaway, Jr., Jerry F. Moore, Gregory K. Krumdick
  • Dimensionally stable anode for electrolysis, method for maintaining dimensions of anode during electrolysis
    Patent number: 6375813
    Abstract: A dimensionally stable electrode is provided comprising a hollow substrate with an open upper end for confining a fluid containing a metal, a film covering portions of the external surface; and a mechanism for replenishing the film. Also provided is a method for maintaining the dimensions of an anode during electrolysis comprising adapting an interior surface of the anode to receive a fluid containing a metal, facilitating transport of the metal to an exterior surface of the anode, forming a protective film on the exterior surface, wherein the transported metal is a cation of the formed protective film, and maintaining the protective film on the exterior surface while the anode is in use.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: April 23, 2002
    Assignee: University of Chicago
    Inventors: John N. Hryn, Michael J. Pellin, Alan M. Wolsky, Wallis F. Calaway, Jr.
  • Dimensionally stable anode for electrolysis, method for maintaining dimensions of anode during electrolysis
    Patent number: 6083362
    Abstract: A dimensionally stable electrode is provided comprising a hollow substrate with an open upper end for confining a fluid containing a metal, a film covering portions of the external surface; and a mechanism for replenishing the film. Also provided is a method for maintaining the dimensions of an anode during electrolysis comprising adapting an interior surface of the anode to receive a fluid containing a metal, facilitating transport of the metal to an exterior surface of the anode, forming a protective film on the exterior surface, wherein the transported metal is a cation of the formed protective film, and maintaining the protective film on the exterior surface while the anode is in use.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: July 4, 2000
    Assignee: University of Chicago
    Inventors: John N. Hryn, Michael J. Pellin, Alan M. Wolsky, Wallis F. Calaway, Jr.