Patent ID: 11865672
Assignee: US SYNTHETIC CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC B  C  E | IPC B  C  E

Claim 16:
17. A method of fabricating a polycrystalline diamond compact, the method comprising:
leaching at least a portion of at least one interstitial constituent from a polycrystalline diamond table to a leach depth measured inwardly from an upper surface to form a leached region;
maintaining an unleached region in the polycrystalline diamond table;
after leaching the polycrystalline diamond table, forming a plurality of recessed features that extend from the upper surface of the polycrystalline diamond table to a depth less than the leach depth of the leached region;
forming at least a portion of one recessed feature of the plurality of recessed features proximate to an expected wear front and proximate to an interface between the unleached region and the leached region; and
at least partially defining a plurality of cells on the upper surface with the plurality of recessed features.