Patents by Inventor Clarke Topp

Clarke Topp 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).

  • Soil penetrometer
    Patent number: 5663649
    Abstract: A soil penetrometer and method of using this apparatus are disclosed. The method relates to the application of a constant force to a soil penetrometer, the penetrometer capable of detecting soil moisture content by time domain reflectrometry. The use of the constant force eliminates the variable nature of this parameter conventionally encountered in the art, and therefore reduces the complexity of soil parameter calculation.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 2, 1997
    Assignee: Her Majesty The Queen in right of Canada, as represented by Agriculture and Agri-Food Canada
    Inventors: Clarke Topp, Bruce Compton, Keith Wires