Patents by Inventor Gene Frick

Gene Frick 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: 4867571
    Abstract: A device and method for determining pulses in a modulated signal is disclosed. The modulated signal is processed and converted into a quantized analog type of digital data stream. The data stream is evaluated over time by considering preceeding and subsequent values in the data stream to generate a filtered wave form. By using extreme values in the filtered wave form pulse detection is accurately determined regardless of whether the modulated signal has complicating features, such as dicrotic notch, or high noise levels, or both.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: September 19, 1989
    Assignee: Sensormedics Corporation
    Inventors: Gene Frick, Rex McCarthy, Michael Pawlowski
  • Patent number: 4824242
    Abstract: The present invention relates to an oximeter for monitoring oxygen saturation of arterial blood. Light of two wavelengths is transmitted through a specimen. Detectors measure the attenuation of light through the specimen to produce two modulating data streams. The data streams are thereafter processed, evaluated, and compared to determine oxygen saturation. A novel method to process, evaluate and compare the two data streams is disclosed.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: April 25, 1989
    Assignee: Sensormedics Corporation
    Inventors: Gene Frick, Rex McCarthy
  • Patent number: 4167665
    Abstract: A device for measuring the concentration of a radiation-absorbing agent in a gas mixture features circuitry for automatically calibrating the device according to a reference gas mixture. An error detector compares the transmittivity of the reference gas mixture, as determined by a photometer, to a reference current determined by Beer's Law. The error signal thus generated is provided to a sample and hold circuit which includes a digital counting circuit and a digital-to-analog converter. The output of the sample and hold circuit causes the drive current supplied to the radiation source of the photometer to be adjusted to automatically calibrate the device.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: September 11, 1979
    Assignee: Dasibi Environmental Corporation
    Inventors: Robert K. Johns, Owen M. Houston, Gene Frick