Patents by Inventor Lonnie D. Mitchell

Lonnie D. Mitchell 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).

  • Wafer scale thermal stress fixture and method
    Patent number: 6994544
    Abstract: A fixture for supporting a plurality of semiconductor chips during the thermal cycling of the chips, including a fluid-permeable bottom screen, a chip-cavity-defining plate supported against a top surface of the bottom screen, a lower attaching mechanism for attaching the chip-cavity-defining plate to the top surface of the bottom screen, and a removable fluid-permeable top screen attached to a top surface of the chip-cavity-defining plate to cover the plurality of holes and chips therein.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: February 7, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: David M. Aldridge, Lonnie D. Mitchell, Joseph L. Roedig