Patents by Inventor Richard H. Sworden

Richard H. Sworden 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).

  • Functionally graded metal substrates and process for making same
    Patent number: 6114048
    Abstract: The invention provides for a functionally-graded metal substrate that is made of at least two metal compositions, a functional insert and a surrounding body that surrounds the functional insert. In a preferred embodiment of the invention a functional insert powder composition of loose powder metal is placed in a compact of a surrounding body powder composition and both metal compositions are sintered in a sintering furnace to form a sintered part. The sintered part is infiltrated in part or in whole with a molten metal compound to produce a functionally graded metal substrate having a density of at least 90% of theoretical. A heat-generating component such as a chip can be attached to the metal substrate for use in microelectronic packaging. When the functionally-graded metal substrate has two discrete compositions of copper/tungsten the surrounding body which has a CTE that ranges from about 5.6ppm/.degree. C. to about 7 ppm/.degree. C.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: September 5, 2000
    Assignee: Brush Wellman, Inc.
    Inventors: David E. Jech, Jordan P. Frazier, Richard H. Sworden, Juan L. Sepulveda