Patents by Inventor Eric A. Ramsland

Eric A. Ramsland 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).

  • Piezoresistive transducer with low drift output voltage
    Patent number: 5074152
    Abstract: Leakage current is reduced in a piezoresistive transducer by forming a leakage barrier around a piezoresistive element of a piezoresistive transducer. The leakage barrier prevents the formation of a parasitic leakage path in the substrate thereby reducing the leakage current flowing through sections of the piezoresistive element, and stabilizing the resistance value and the output voltage of the piezoresistive transducer.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: December 24, 1991
    Assignee: Motorola, Inc.
    Inventors: Stuart Ellner, Laurel L. Hoekstra, Eric A. Ramsland, Renwin J. Yee