Patents by Inventor Glenn Stuart McDonald

Glenn Stuart McDonald 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).

  • Liquid soil conditioner
    Patent number: 6752850
    Abstract: A liquid soil conditioning composition is disclosed. The composition is in the form of an aqueous dispersion of rock lime and sulfur where the atomic ratio of calcium to sulfur is in the range 0.9:1 to 1.3:1. The particle size of the rock lime and the sulfur is 5 &mgr;m average. The liquid compositions improve the agricultural productivity of clay soils.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: June 22, 2004
    Assignee: Ultimate Products (Aust) Pty LTD
    Inventors: Graham George Strachan, Glenn Stuart McDonald