Inventor
DYKSTRA MARK W
US25 patents
⚠️ This page may combine multiple inventors who share the name “DYKSTRA MARK W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
17 patentsUS7395882B2Jul 8, 2008
Casing and liner drilling bits
BAKER HUGHES INC154 citations99
US6298930B1Oct 9, 2001
Drill bits with controlled cutter loading and depth of cut
BAKER HUGHES INC200 citations99
US7096978B2Aug 29, 2006
Drill bits with reduced exposure of cutters
BAKER HUGHES INC109 citations98
US6779613B2Aug 24, 2004
Drill bits with controlled exposure of cutters
BAKER HUGHES INC118 citations98
US6460631B2Oct 8, 2002
Drill bits with reduced exposure of cutters
BAKER HUGHES INC161 citations98
US6408958B1Jun 25, 2002
Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped
BAKER HUGHES INC212 citations98
US6173797B1Jan 16, 2001
Rotary drill bits for directional drilling employing movable cutters and tandem gage pad arrangement with active cutting elements and having up-drill capability
BAKER HUGHES INC142 citations98
US6321862B1Nov 27, 2001
Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability
BAKER HUGHES INC84 citations97
US6883623B2Apr 26, 2005
Earth boring apparatus and method offering improved gage trimmer protection
BAKER HUGHES INC132 citations96
US6935441B2Aug 30, 2005
Drill bits with reduced exposure of cutters
BAKER HUGHES INC65 citations95
US6230828B1May 15, 2001
Rotary drilling bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics
BAKER HUGHES INC58 citations95
US8006785B2Aug 30, 2011
Casing and liner drilling bits and reamers
BAKER HUGHES INC24 citations92
US7814990B2Oct 19, 2010
Drilling apparatus with reduced exposure of cutters and methods of drilling
BAKER HUGHES INC16 citations92
US7000715B2Feb 21, 2006
Rotary drill bits exhibiting cutting element placement for optimizing bit torque and cutter life
BAKER HUGHES INC50 citations92
US6443249B2Sep 3, 2002
Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics
BAKER HUGHES INC33 citations92
US6006845ADec 28, 1999
Rotary drill bits for directional drilling employing tandem gage pad arrangement with reaming capability
BAKER HUGHES INC32 citations91
US6397958B1Jun 4, 2002
Reaming apparatus and method with ability to drill out cement and float equipment in casing
BAKER HUGHES INC51 citations89
OLDHAM JACK T
5 patentsUS8167059B2May 1, 2012
Casing and liner drilling shoes having spiral blade configurations, and related methods
OLDHAM JACK T8 citations83
US8225888B2Jul 24, 2012
Casing shoes having drillable and non-drillable cutting elements in different regions and related methods
OLDHAM JACK T3 citations73
US8225887B2Jul 24, 2012
Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods
OLDHAM JACK T4 citations73
US8205693B2Jun 26, 2012
Casing and liner drilling shoes having selected profile geometries, and related methods
OLDHAM JACK T4 citations73
US8297380B2Oct 30, 2012
Casing and liner drilling shoes having integrated operational components, and related methods
OLDHAM JACK T1 citations62