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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US395281524 Mar 197527 Apr 1976Dresser Industries, Inc.Land erosion protection on a rock cutter
US398259630 Dec 197428 Sep 1976Smith International, Inc.Drill bit
US40869733 Dec 19762 May 1978Dresser Industries, Inc.Asymmetric insert for inner row of an earth boring cutter
US417672517 Aug 19784 Dec 1979Dresser Industries, Inc.Earth boring cutting element enhanced retention system
US43231318 Sep 19806 Apr 1982Baker Service Company, Inc.Removable anti-wear insert
US453159528 May 198230 Jul 1985Wear resistant composite insert and boring tool with insert
US462060128 Sep 19814 Nov 1986Maurer Engineering Inc.Well drilling tool with diamond thrust bearings
US466066017 May 198528 Apr 1987TRW Inc.Round/flat carbide seat
US513148030 Jul 199121 Jul 1992Smith International, Inc.Rotary cone milled tooth bit with heel row cutter inserts
US514501630 Jan 19918 Sep 1992Rock Bit International, Inc.Rock bit with reaming rows
US520137622 Apr 199213 Apr 1993Dresser Industries, Inc.Rock bit with improved gage insert
US522456018 May 19926 Jul 1993Modular EngineeringModular drill bit
US528793631 Jan 199222 Feb 1994Baker Hughes IncorporatedRolling cone bit with shear cutting gage
US53418908 Jan 199330 Aug 1994Smith International, Inc.Ultra hard insert cutters for heel row rotary cone rock bit applications
US534602617 Dec 199313 Sep 1994Baker Hughes IncorporatedRolling cone bit with shear cutting gage
US540702224 Nov 199318 Apr 1995Baker Hughes IncorporatedFree cutting gage insert with relief angle
US541524324 Jan 199416 May 1995Smith International, Inc.Rock bit borhole back reaming method
US542142322 Mar 19946 Jun 1995Dresser Industries, Inc.Rotary cone drill bit with improved cutter insert
US542920031 Mar 19944 Jul 1995Dresser Industries, Inc.Rotary drill bit with improved cutter
US545277131 Mar 199426 Sep 1995Dresser Industries, Inc.Rotary drill bit with improved cutter and seal protection
US54678362 Sep 199421 Nov 1995Baker Hughes IncorporatedFixed cutter bit with shear cutting gage
US551807722 Mar 199521 May 1996Dresser Industries, Inc.Rotary drill bit with improved cutter and seal protection
US555176013 Feb 19953 Sep 1996The Sollami CompanyTungsten carbide insert for a cutting tool
US56367003 Jan 199510 Jun 1997Dresser Industries, Inc.Roller cone rock bit having improved cutter gauge face surface compacts and a method of construction
US564495631 May 19958 Jul 1997Dresser Industries, Inc.Rotary drill bit with improved cutter and method of manufacturing same
US567864513 Nov 199521 Oct 1997Baker Hughes IncorporatedMechanically locked cutters and nozzles
US570927822 Jan 199620 Jan 1998Dresser Industries, Inc.Rotary cone drill bit with contoured inserts and compacts
US572249721 Mar 19963 Mar 1998Dresser Industries, Inc.Roller cone gage surface cutting elements with multiple ultra hard cutting surfaces
US575529812 Mar 199726 May 1998Dresser Industries, Inc.Hardfacing with coated diamond particles
US575529927 Dec 199526 May 1998Dresser Industries, Inc.Hardfacing with coated diamond particles
US57553019 Aug 199626 May 1998Dresser Industries, Inc.Inserts and compacts with lead-in surface for enhanced retention
US583640931 Mar 199717 Nov 1998Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys
US58395264 Apr 199724 Nov 1998Smith International, Inc.Rolling cone steel tooth bit with enhancements in cutter shape and placement
US58682134 Apr 19979 Feb 1999Smith International, Inc.Steel tooth cutter element with gage facing knee
US590624521 Oct 199725 May 1999Baker Hughes IncorporatedMechanically locked drill bit components
US59154864 Apr 199729 Jun 1999Smith International, Inc.Cutter element adapted to withstand tensile stress
US60297594 Apr 199729 Feb 2000Smith International, Inc.Hardfacing on steel tooth cutter element
US610214016 Jan 199815 Aug 2000Dresser Industries, Inc.Inserts and compacts having coated or encrusted diamond particles
US613877916 Jan 199831 Oct 2000Dresser Industries, Inc.Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter
US617058316 Jan 19989 Jan 2001Dresser Industries, Inc.Inserts and compacts having coated or encrusted cubic boron nitride particles
US654701716 Nov 199815 Apr 2003Smart Drilling and Completion, Inc.Rotary drill bit compensating for changes in hardness of geological formations
US655436912 Jul 200129 Apr 2003The Sollami CompanyCutting tool with hardened insert
US741603512 Aug 200426 Aug 2008Smith International, Inc.Shaped inserts with increased retention force

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