Patents Assigned to Sunset Peak International Limited
  • Apparatus for growing diamonds by microwave plasma chemical vapour deposition process and substrate stage used therein
    Patent number: 10184192
    Abstract: An apparatus for growing diamonds, the apparatus comprising: one or more chambers, each chamber is in fluid connection with one or more other chambers, each chamber comprising one or more substrate stage assembly within the chamber to support a substrate stage having a plurality of diamond seeds disposed thereon.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: January 22, 2019
    Assignee: SUNSET PEAK INTERNATIONAL LIMITED
    Inventor: Devi Shanker Misra
  • Multi-heater method for growing high quality diamond
    Patent number: 10166518
    Abstract: Disclosed herein is an apparatus and method for growing a diamond. The apparatus for growing a diamond comprises: a reaction cell that is configured to grow the diamond therein; a main heater including a main heating surface that is arranged along a first inner surface of the reaction cell; and a sub-heater including a sub-heating surface that is arranged along a second inner surface of the reaction cell, the second inner surface being non-parallel with the first inner surface.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: January 1, 2019
    Assignee: SUNSET PEAK INTERNATIONAL LIMITED
    Inventors: Hexiang Zhu, Karl Pearson
  • Multilayer structure for a diamond growth and a method of providing the same
    Patent number: 9238875
    Abstract: A multi-layer structure in a reaction cell for a diamond growth is provided. The multi-layer structure includes: a diamond seed; a first metal catalyst layer provided on the diamond seed, the first metal catalyst layer containing a first concentration of carbon; a second metal catalyst layer provided on the first metal layer, the second metal catalyst layer containing a second concentration of carbon that is higher than the first concentration; and a carbon source layer provided on the second metal layer.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: January 19, 2016
    Assignee: Sunset Peak International Limited
    Inventors: Hexiang Zhu, Karl Pearson, Joo Ro Kim