IP Library › Assignment 026430/0658
Patent Assignment
Reel/Frame 026430/0658

Release of Security Interest

Recorded: 2011-06-13 Received: 2011-06-13 Pages: 9
Assignor
Assignees
ULTERRA DRILLING TECHNOLOGIES, L.P.
420 THROCKMORTON STREET, SUITE 1110, FORT WORTH, TX, 76102, UNITED STATES
ULTERRA, LP
7010-45 STREET, LEDUC, ALBERTA, CAX, T9E 7E7, CANADA
Covered Properties (18)
Seal Assembly for Drill Bit
Helical Chisel Insert for Rock Bits
Circumvolve Cutters for Drill Bit
Application: 11/734,650 →
Casing detection and avoidance while drilling
Application: 60/842,702 →
Stepped polycrystalline diamond compact insert
Application: 11/509,404 →
Rotary seal arrangement for drill bits
Application: 60/834,864 →
Helical chisel insert for rock bits
Application: 60/833,174 →
Directable Nozzle for Rock Drilling Bits
Modular Kerfing Drill Bit
Sonochemical leaching of polycrystalline diamond
Application: 11/340,241 →
Stepped Polycrystalline Diamond Compact Insert
Application: 11/151,766 →
Directable nozzle for rock drilling bits
Application: 11/141,222 →
Modular kerfing drill bit
Application: 11/073,051 →
Stepped Polycrystalline Diamond Compact Insert
Application: 10/600,662 →
Rock Bit with Channel Structure for Retaining Cutter Segments
Application: 10/419,589 →
Adjustable Earth Boring Device
Application: 10/209,832 →
Roller Cone Bi-Center Bit
Application: 10/210,806 →
Sharp Gage for Mill Tooth Rock Bits
Application: 09/773,884 →