Patents Assigned to Scientific and Applied Processes Pty., Ltd.
  • Nitrogenous fertilizers
    Patent number: 4013440
    Abstract: This invention relates to nitrogenous compositions suitable for use as both fertilizers and soil conditioners, and in particular relates to processes for preparing the same from coals of low rank. The process dissolves humus from the coal with an aqueous urea solution that is then oxidized and neutralized with alkali to form a composition providing slow release of nitrogen when used as a fertilizer.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: March 22, 1977
    Assignee: Scientific and Applied Processes Pty., Ltd.
    Inventor: William Henry Vale