Patents by Inventor Hermanus J. De Klerk

Hermanus J. De Klerk 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).

  • Gassed emulsion explosives
    Patent number: 5458707
    Abstract: A PIBSA based emulsion explosive including an ester of orthophosphoric acid, preferably made from long chain alcohols having from 6 to 18 carbon atoms. The explosive may be gassed chemically or mechanically and can be used in the manufacture of heavy ANFO.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: October 17, 1995
    Assignee: Sasol Chemical Industries (Proprietary) Limited
    Inventors: Mark O. Delagey, Hermanus J. De Klerk