Patents by Inventor Tommy Ray Shedd

Tommy Ray Shedd 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).

  • Apparatus and method for automated biomonitoring of water quality
    Patent number: 6393899
    Abstract: An automated biomonitoring system for monitoring water quality includes an exposure chamber for housing an aquatic organism having ventilatory behavior and body movement sensitive to water quality. Electrodes capture electrical signals produced by the organism during its ventilatory behavior and body movement, and a controller responsive to signals from the electrodes determines one or more ventilatory parameters based on the signals. The ventilatory parameters are compared with corresponding thresholds to determine when the water to which the organism is exposed has caused physiological stress to the organism. The signals captured by the electrodes may be corrected for variations in water conductivity so that the signals processed by the controlled are not influenced by conductivity.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: May 28, 2002
    Assignee: Geo-Centers, Inc.
    Inventors: Tommy Ray Shedd, Mark Wesley Widder, Jeffrey Daniel Leach, William Hendrik Van Der Schalie, Robert Charles Bishoff
  • Apparatus and method for automated biomonitoring of water quality
    Patent number: 6058763
    Abstract: An automated biomonitoring system for monitoring water quality includes an exposure chamber for housing an aquatic organism having ventilatory behavior and body movement sensitive to water quality. Electrodes sense electrical signals produced by the organism during its ventilatory behavior and body movement, and a controller responsive to signals from the electrodes determines a plurality of ventilatory parameters based on the signals. The ventilatory parameters are compared with corresponding thresholds to determine when the water to which the organism is exposed has caused physiological stress to the organism.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: May 9, 2000
    Assignees: Geo-Centers, Inc., The United States of America as represented by the Secretary of the Army
    Inventors: Tommy Ray Shedd, Mark Wesley Widder, Jeffery Daniel Leach, William Henry Van Der Schalie, Robert Charles Bishoff