Patents by Inventor Charles A. Little, III

Charles A. Little, III 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).

  • Alterable frequency response electrocardiographic amplifier
    Patent number: 4494551
    Abstract: An electrocardiographic amplifier having an integrator in the feedback loop between the amplifier's input and output whose time constant is varied by the duty cycle of a series switch to vary the low frequency 3 dB roll-off point as a function of the detected low frequency noise in the amplifier output signal. A capacitor is switched in parallel with the inverting feedback resistor to lower the high frequency 3 dB roll-off point in response to detected high frequency noise.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: January 22, 1985
    Assignee: Medicomp, Inc.
    Inventors: Charles A. Little, III, Raymond B. Patterson, III