Patents by Inventor Robin O. Barnard

Robin O. Barnard 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 treatment
    Patent number: 5178661
    Abstract: A composition for use in applying an alkaline earth metal element to an acidic sub soil. The composition includes the element in the form of a water-soluble salt or complex with fulvic acid in an aqueous medium. The fulvic acid is preferably a coal-derived fulvic acid.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: January 12, 1993
    Assignee: National Energy Council
    Inventors: Hendrik V. H. van der Watt, Robin O. Barnard, Izak J. Cronje, Johannes Dekker