Patents by Inventor Nico Erasmus

Nico Erasmus 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).

  • Mine support
    Patent number: 7909542
    Abstract: A mine support having a ductile metal sleeve, an interior of which is filled with a first aerated cementitious material of a first density which extends over at least 60% of the axial length of the sleeve. The interior of the sleeve is also filled with a second aerated cementitious material of a second density, which is less than the first density, and which fills the remainder of the interior of the sleeve.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: March 22, 2011
    Assignee: Grinaka-LTA Limited
    Inventors: Nico Erasmus, Joseph Cornelius Visagie
  • Mine support
    Publication number: 20070092344
    Abstract: A mine support having a ductile metal sleeve, an interior of which is filled with a first aerated cementitious material of a first density which extends over at least 60% of the axial length of the sleeve. The interior of the sleeve is also filled with a second aerated cementitious material of a second density, which is less than the first density, and which fills the remainder of the interior of the sleeve.
    Type: Application
    Filed: November 6, 2003
    Publication date: April 26, 2007
    Inventors: Nico Erasmus, Joseph Visagie