Patents by Inventor Terrence J. Nelson

Terrence J. Nelson 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).

  • Controlled application of weed control chemicals from moving sprayer
    Patent number: 5768823
    Abstract: A selective spraying weed control system utilizes weed detectors that identify weeds in a field of view and releases herbicide from individual nozzles. The timing of the release of herbicide from each nozzle is controlled to correspond to the actual ground speed of each nozzle. Such actual ground speed is extrapolated from direct measurements of ground speed taken from two separate locations in the weed spraying apparatus, and from the location of each nozzle within the apparatus.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: June 23, 1998
    Assignee: Canadian Space Agency
    Inventor: Terrence J. Nelson