Thermally stable polycrystalline constructions comprise a diamond body joined with a
substrate, and may have a nonplanar interface. The construction may include an interlayer …

An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline
diamond material on the outermost end of the insert, the polycrystalline diamond material …

An insert for a drill bit may include a metallic carbide body;(60) Provisional application No.
61/232,122, filed on Aug. an outer layer of polycrystalline diamond material on the Related …

PCD inserts comprise a PCD body having multiple FG-PCD regions with decreasing
diamond content moving from a body outer surface to a metallic substrate. The diamond …

A cutting element that includes a substrate; and an outer layer of polycrystalline diamond
material disposed upon the outermost end of the cutting element, wherein the polycrystalline …

2008. O115421 A1 5, 2008 Sani 4,694,918 A 9, 1987 Hall 2008.0128951 A1 6/2008
Lockwood et al. 4,789,385 A 12/1988 Dyer et al. 2008. O1353. 06 A1 6/2008 Da Silva et al …

In one aspect, an impregnated drill bit is provided having at least one insert positioned
within at least one of the plurality of blades such that the insert spans more than 75% of the …

A cutting element that includes a substrate; and an outer layer of polycrystalline diamond
material disposed upon the outermost end of the cutting element, wherein the polycrystalline …

(57) An insert for a drill bit may include a metallic carbide body; an outer layer of
polycrystalline diamond material on the outermost end of the insert, the polycrystalline …