Patents by Inventor Kenneth R. Harker

Kenneth R. Harker 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).

  • SENSORS FOR MEASURING TEMPERATURE, PRESSURE TRANSDUCERS INCLUDING TEMPERATURE SENSORS AND RELATED ASSEMBLIES AND METHODS
    Publication number: 20150007650
    Abstract: Quartz resonator pressure transducers for use in subterranean boreholes include a quartz pressure sensor and an electronic temperature sensor. Temperature sensors include a constant current generator, a proportional to absolute temperature (PTAT) current generator, and a relaxation oscillator. Pressure transducers may include such a temperature sensor. Methods of monitoring pressure in a subterranean borehole may include monitoring a frequency output of a quartz pressure sensor and monitoring a frequency output of an electronic temperature sensor.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 8, 2015
    Inventors: Shane D. Rose, Brennan F. Crellin, Kenneth R. Harker