Patents Represented by Attorney Richard C. Donaldson

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  • Folded bus bar leadframe
    Patent number: 5286999
    Abstract: A leadframe has a bus bar extending between two lead fingers on the leadframe. The bus bar and lead fingers are etched to reduce the thickness thereof, and the bus bar is folded under the lead finger, but insulated therefrom by a strip of insulating material. An adhesive is applied to the bus bar to attach it and the leadframe to the surface of a semiconductor chip.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: February 15, 1994
    Assignee: Texas Instruments Incorporated
    Inventor: Anthony M. Chiu
  • Interferometric temperature measurement system and method
    Patent number: 5249865
    Abstract: An interferonmetric temperature measurement system is described for determining the temperature of a sample. The system comprises three detectors for measuring various intensities of a beam of electromagnetic radiation reflected off the sample and circuitry for determining the temperature from the intensities. The detectors measure the intensity of the beam and two orthogonally polarized components of the beam.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: October 5, 1993
    Assignee: Texas Instruments Incorporated
    Inventors: Ajit P. Paranjpe, Steven A. Henck, Walter M. Duncan