Patents Assigned to Omni IP Ltd
  • Method and apparatus for selectively leaching portions of PDC cutters used in drill bits
    Patent number: 7712553
    Abstract: A polycrystalline diamond compact (PDC) cutter having a body of diamond crystals containing a catalyzing material is coated with a material impervious to a given acid. After the coating has dried, a segment of the coating is removed and acid is supplied to the diamond crystal body through the template in the coating to leach out the catalyzing material contained within the body of diamond crystals.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: May 11, 2010
    Assignee: Omni IP Ltd
    Inventor: James Shamburger