Ramey & Schwaller would like to congratulate its client CNPC USA Corporation on issuance of U.S. Patent Number 9,746,403 titled Method of Testing a Polycrystalline Diamond Compact Cutter on August 29, 2017. The patent is directed to the method for determining fracture toughness includes clamping a cutting element in a first orientation, exerting a confining pressure on the cutting element, applying a first load at a first distance from a perimeter of the diamond table of the cutting element, increasing the first load to a first level sufficient fracture, and recording the first level sufficient to fracture. Then, another load is applied at another distance from a perimeter of the diamond table with another cutting element or the same cutting element in a different orientation.
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