Patents by Inventor Keith A. Synder

Keith A. Synder 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).

  • Patent number: 4962416
    Abstract: An electronic package including a first circuitized substrate (e.g., printed circuit board) a second, flexible circuitized substrate (e.g., polyimide), an electronic device (semiconductor chip) and a metallic (e.g., aluminum) heat sink member joined to the first substrate to provide a cover for the package's internal components. A predetermined quantity of liquid material (e.g. wax or oil) is located between a defined surface of the chip and a corresponding internal surface of the heat sink member during assembly of the package, this material possessing a surface tension sufficient to create a suction force between the device and heat sink so as to elevate the device in a spaced position from (e.g., above) the first circuitized substrate during said assembly. Should a liquid material such as oil be utilized, this material remains in the liquid state during package operation to continuously provide the defined suction force sufficient to maintain the device at the elevated position.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: October 9, 1990
    Assignee: International Business Machines Corporation
    Inventors: Alan L. Jones, Keith A. Synder