Patents by Inventor Ronald N. Spaight

Ronald N. Spaight 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).

  • Studded chip attachment process
    Patent number: 4179802
    Abstract: A plurality of metal studs are plated on a chip carrier surface in a pattern to match a terminal metal footprint on a chip to be joined. The studs are of sufficient height to permit flux cleaning, if necessary. After the studs are in place, the chip is aligned with the carrier and attached thereto, the chip pads containing a small amount of solder to provide the connecting joints. The carrier and chip are made of materials having nearly equal thermal expansion characteristics.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: December 25, 1979
    Assignee: International Business Machines Corporation
    Inventors: Kailash C. Joshi, Ronald N. Spaight