Patent ID: 7243745

Claim:
A cutting element for use on a tool for forming a borehole in a subterranean formation, comprising: a substrate having a layer of superabrasive material disposed on an end surface thereof, wherein an interface between the substrate and the layer of superabrasive material comprises: a first ring pattern including a plurality of raised sections circumferentially separated by respective grooves; and at least a second ring pattern, wherein each of the at least a second ring pattern includes a plurality of raised sections circumferentially separated by respective grooves; wherein at least one of the first ring pattern and the at least a second ring pattern includes an odd number of raised sections; and wherein each raised section of the first ring pattern substantially circumferentially overlaps a groove of the at least a second ring pattern and at least partially circumferentially overlaps at least one raised section of the at least a second ring pattern adjacent the groove of the at least a second ring pattern overlapped thereby.