Patents by Inventor Mhlonishwa Cyprian Nzama

Mhlonishwa Cyprian Nzama 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).

  • POLYCRYSTALLINE DIAMOND COMPOSITE COMPACT ELEMENT, TOOLS INCORPORATING SAME AND METHOD FOR MAKING SAME
    Publication number: 20220226965
    Abstract: The invention relates to a PCD composite compact element comprising a PCD structure integrally bonded at an interface to a cemented carbide substrate; the PCD structure comprising coherently bonded diamond grains having a mean size no greater than 15 microns; the cemented carbide substrate comprising carbide particles dispersed in a metallic binder, the carbide particles comprising a carbide compound of a metal; wherein the ratio of the amount of metallic binder to the amount of the metal at points in the substrate deviates from a mean value by at most 20 percent of the mean value.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 21, 2022
    Inventors: Geoffrey John DAVIES, Mhlonishwa Cyprian NZAMA, Roger William Nigel NILEN
  • Diamond grains, method for making same and mixture comprising same
    Patent number: 10047455
    Abstract: A method of providing well-shaped diamond grains of at most about 100 microns in size. The method includes providing a synthesis assembly comprising a source of carbon material, a plurality of seed grains on which diamond material can crystallize, and solvent-catalyst material for promoting the crystallization of the diamond grains, and subjecting the synthesis assembly to a condition for growing the diamond grains. The synthesis condition is maintained long enough for at least about half of the carbon material to be converted into the diamond grains.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 14, 2018
    Assignees: ELEMENT SIX ABRASIVES S.A., ELEMENT SIX LIMITED
    Inventors: Mhlonishwa Cyprian Nzama, Dale Anthony Thomson, Mark Gregory Munday
  • DIAMOND GRAINS, METHOD FOR MAKING SAME AND MIXTURE COMPRISING SAME
    Publication number: 20150315722
    Abstract: A method of providing well-shaped diamond grains of at most about 100 microns in size. The method includes providing a synthesis assembly comprising a source of carbon material, a plurality of seed grains on which diamond material can crystallise, and solvent-catalyst material for promoting the crystallisation of the diamond grains, and subjecting the synthesis assembly to a condition for growing the diamond grains. The synthesis condition is maintained long enough for at least about half of the carbon material to be converted into the diamond grains.
    Type: Application
    Filed: December 10, 2013
    Publication date: November 5, 2015
    Inventors: Mhlonishwa Cyprian Nzama, Dale Anthony Thomson, Mark Gregory Munday
  • POLYCRYSTALLINE DIAMOND COMPOSITE COMPACT ELEMENT, TOOLS INCORPORATING SAME AND METHOD FOR MAKING SAME
    Publication number: 20110253459
    Abstract: The invention relates to a PCD composite compact element comprising a PCD structure integrally bonded at an interface to a cemented carbide substrate; the PCD structure comprising coherently bonded diamond grains having a mean size no greater than 15 microns; the cemented carbide substrate comprising carbide particles dispersed in a metallic binder, the carbide particles comprising a carbide compound of a metal; wherein the ratio of the amount of metallic binder to the amount of the metal at points in the substrate deviates from a mean value by at most 20 percent of the mean value.
    Type: Application
    Filed: October 21, 2009
    Publication date: October 20, 2011
    Inventors: Geoffrey John Davies, Mhlonishwa Cyprian Nzama, Roger William Nigel Nilen