Patents by Inventor Robert L. Shadwick, Jr.

Robert L. Shadwick, 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).

  • Treatment of ingots or spacer blocks in stacked aluminum ingots
    Patent number: 6669897
    Abstract: A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: December 30, 2003
    Assignee: Alcca Inc.
    Inventors: Joseph P. Harenski, Roger W. Kaufold, Brian J. Morrissey, Robert L. Shadwick, Jr., Larry F. Wieserman
  • Treatment of ingots or spacer blocks in stacked aluminum ingots
    Patent number: 6461451
    Abstract: A method of treating a surface of a stacked aluminum alloy ingot during a heating process. Spacer blocks are positioned adjacent aluminum alloy ingots to form a stack, wherein the spacer block has a support surface contacting a contact surface of the aluminum alloy ingot, and at least one of the support surface and the contact surface include a fluorine containing material. The stack is heated to at least a temperature at which the fluorine containing material decomposes or vaporizes such that a layer of a fluorinated oxide compound is formed at the interfaces between the ingots and the spacer blocks.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: October 8, 2002
    Assignee: Alcoa Inc.
    Inventors: Joseph P. Harenski, Roger W. Kaufold, Brian J. Morrissey, Robert L. Shadwick, Jr., Larry F. Wieserman