Patents by Inventor James McFaddin

James McFaddin 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).

  • Signal processing apparatus
    Patent number: 4524420
    Abstract: Apparatus for processing the output signal of a gas chromatograph. An interface device receives the analog output signal and digitizes it, reducing the effects of noise and preparing the signal for processing by a digital microprocessor. The microprocessor detects and measures peaks in the signal and determines the desired identification (in order of ascending molecular weight) and concentration (peak amplitude) data. A logarithmic output signal is produced for displaying output signals with wide dynamic ranges on a strip chart recorder.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: June 18, 1985
    Assignee: Core Laboratories, Inc.
    Inventors: David O. Glodo, James McFaddin
  • Snow density gauge
    Patent number: D663225
    Type: Grant
    Filed: October 31, 2010
    Date of Patent: July 10, 2012
    Assignee: Mathews Properties, Inc.
    Inventors: William Mathews Brooks, James McFaddin