Patents by Inventor Stephen Robert Engle

Stephen Robert Engle 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).

  • Thermally enhanced ball grid array package
    Patent number: 5768774
    Abstract: A thermally enhanced ball grid array package for electronic components, with an electronic and a plurality of ceramic component carriers bonded to a metal heat sink, enhances thermal performance, reduces solder ball fatigue and reduces stresses between the ceramic component carriers and the heat sink. Bonding the ceramic component carriers to the heat sink reduces expansion induced stresses of the solder balls on the carriers. Plural ceramic component carriers, smaller than a single carrier would have to be for the same package, reduce stresses at the interfaces between the ceramic component carriers and the heat sink.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: June 23, 1998
    Assignee: International Business Machines
    Inventors: James Warren Wilson, Stephen Robert Engle, Scott Preston Moore