Patents by Inventor Andre Pienaar

Andre Pienaar 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).

  • Publication number: 20140179936
    Abstract: A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.
    Type: Application
    Filed: October 15, 2013
    Publication date: June 26, 2014
    Inventors: Andre Pienaar, Laurence Justin Pienaar Wilson, Michael Stockenhuber
  • Publication number: 20140090757
    Abstract: An emulsion explosive, formulated with a basic surfactant, which is sensitised by gassing with active sodium hypochlorite.
    Type: Application
    Filed: April 30, 2012
    Publication date: April 3, 2014
    Applicant: AEL MINING SERVICES LIMITED
    Inventors: Andre Pienaar, Hamat Yakhoub, Eric Kennedy, Bogdan Dlugogorski
  • Patent number: 8558038
    Abstract: A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: October 15, 2013
    Assignee: AEL Mining Services Limited
    Inventors: Andre Pienaar, Laurence Justin Pienaar Wilson, Michael Stockenhuber
  • Publication number: 20130090497
    Abstract: A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.
    Type: Application
    Filed: June 21, 2011
    Publication date: April 11, 2013
    Applicant: AEL MINING SERVICES LIMITED
    Inventors: Andre Pienaar, Laurence Justin Pienaar Wilson, Michael Stockenhuber
  • Patent number: 8342609
    Abstract: An open cast mining method includes sinking a blasting borehole (14) for receiving an explosive charge into a ground body (12) which is to be mined, taking an initial measurement of one or more borehole conditions, including at least a temperature inside a bottom half (14.1) of the borehole (14), and loading the borehole (14) with a base explosive charge (28) only if the initial measurement of all of the one or more measured borehole conditions are within predefined limits indicating that the borehole (14) will not be subject to uncontrolled detonation of the base explosive charge (28). The one or more borehole conditions, including at least said temperature, are further measured and monitored after the base explosive charge (28) has been loaded. An alarm signal external of the borehole (14) is provided if any of the one or more measured borehole conditions are not within predefined limits so that there is a risk of uncontrolled detonation of the explosive charge (28).
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: January 1, 2013
    Assignee: AEL Mining Services Limited
    Inventors: Robert James Holdcroft, Neville Robert Marillier, Derek Luke Anthony, Andre Pienaar
  • Publication number: 20110006585
    Abstract: An open cast mining method includes sinking a blasting borehole (14) for receiving an explosive charge into a ground body (12) which is to be mined, taking an initial measurement of one or more borehole conditions, including at least a temperature inside a bottom half (14.1) of the borehole (14), and loading the borehole (14) with a base explosive charge (28) only if the initial measurement of all of the one or more measured borehole conditions are within predefined limits indicating that the borehole (14) will not be subject to uncontrolled detonation of the base explosive charge (28). The one or more borehole conditions, including at least said temperature, are further measured and monitored after the base explosive charge (28) has been loaded. An alarm signal external of the borehole (14) is provided if any of the one or more measured borehole conditions are not within predefined limits so that there is a risk of uncontrolled detonation of the explosive charge (28).
    Type: Application
    Filed: March 4, 2010
    Publication date: January 13, 2011
    Applicant: AFRICAN EXPLOSIVES LIMITED
    Inventors: Robert James Holdcroft, Neville Robert Marillier, Derek Luke Anthony, Andre Pienaar