Assignee
DRESSER IND
US1,232 patents
Top patents by PatentIndex Score
US6476609B1Nov 5, 2002
Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone
DRESSER IND264 citations99
US6191586B1Feb 20, 2001
Method and apparatus for azimuthal electromagnetic well logging using shielded antennas
DRESSER IND156 citations99
US6163155ADec 19, 2000
Electromagnetic wave resistivity tool having a tilted antenna for determining the horizontal and vertical resistivities and relative dip angle in anisotropic earth formations
DRESSER IND256 citations99
US6003623ADec 21, 1999
Cutters and bits for terrestrial boring
DRESSER IND231 citations99
US5794720AAug 18, 1998
Method of assaying downhole occurrences and conditions
DRESSER IND167 citations99
US5704436AJan 6, 1998
Method of regulating drilling conditions applied to a well bit
DRESSER IND145 citations99
US5373907ADec 20, 1994
Method and apparatus for manufacturing and inspecting the quality of a matrix body drill bit
DRESSER IND188 citations99
US4621031ANov 4, 1986
Composite material bonded by an amorphous metal, and preparation thereof
DRESSER IND208 citations99
US6429784B1Aug 6, 2002
Casing mounted sensors, actuators and generators
DRESSER IND281 citations98
US6366531B1Apr 2, 2002
Method and apparatus for acoustic logging
DRESSER IND117 citations98
US5886303AMar 23, 1999
Method and apparatus for cancellation of unwanted signals in MWD acoustic tools
DRESSER IND142 citations98
US5767399AJun 16, 1998
Method of assaying compressive strength of rock
DRESSER IND123 citations98
US5570750ANov 5, 1996
Rotary drill bit with improved shirttail and seal protection
DRESSER IND105 citations98
US5518077AMay 21, 1996
Rotary drill bit with improved cutter and seal protection
DRESSER IND169 citations98
US5452771ASep 26, 1995
Rotary drill bit with improved cutter and seal protection
DRESSER IND167 citations98
US5090492AFeb 25, 1992
Drill bit with vibration stabilizers
DRESSER IND138 citations98
US4722405AFeb 2, 1988
Wear compensating rock bit insert
DRESSER IND162 citations98
US4688970AAug 25, 1987
Power drill and automatic control system therefore
DRESSER IND154 citations98
US6296069B1Oct 2, 2001
Bladed drill bit with centrally distributed diamond cutters
DRESSER IND166 citations97
US6213250B1Apr 10, 2001
Transducer for acoustic logging
DRESSER IND95 citations97
US6152591ANov 28, 2000
Interactive graphics display system for a fuel dispenser
DRESSER IND215 citations97
US5987385ANov 16, 1999
Method and apparatus for creating an image of an earth borehole or a well casing
DRESSER IND139 citations97
US5755298AMay 26, 1998
Hardfacing with coated diamond particles
DRESSER IND117 citations97
US5755299AMay 26, 1998
Hardfacing with coated diamond particles
DRESSER IND174 citations97
US5439068AAug 8, 1995
Modular rotary drill bit
DRESSER IND134 citations97
US5429200AJul 4, 1995
Rotary drill bit with improved cutter
DRESSER IND107 citations97
US5421423AJun 6, 1995
Rotary cone drill bit with improved cutter insert
DRESSER IND144 citations97
US4988274AJan 29, 1991
Method and apparatus for producing an optical element
DRESSER IND155 citations97
US6552962B1Apr 22, 2003
Method and apparatus for acoustic logging
DRESSER IND47 citations96
US6415687B2Jul 9, 2002
Rotary cone drill bit with machined cutting structure and method
DRESSER IND50 citations96
US6392561B1May 21, 2002
Short hop telemetry system and method
DRESSER IND109 citations96
US6269892B1Aug 7, 2001
Steerable drilling system and method
DRESSER IND113 citations96
US6260635B1Jul 17, 2001
Rotary cone drill bit with enhanced journal bushing
DRESSER IND89 citations96
US6213228B1Apr 10, 2001
Roller cone drill bit with improved pressure compensation
DRESSER IND48 citations96
US6196335B1Mar 6, 2001
Enhancement of drill bit seismics through selection of events monitored at the drill bit
DRESSER IND60 citations96
US6170583B1Jan 9, 2001
Inserts and compacts having coated or encrusted cubic boron nitride particles
DRESSER IND112 citations96
US6138779AOct 31, 2000
Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter
DRESSER IND97 citations96
US6131673AOct 17, 2000
Method of assaying downhole occurrences and conditions
DRESSER IND71 citations96
US6109368AAug 29, 2000
Method and system for predicting performance of a drilling system for a given formation
DRESSER IND265 citations96
US6065219AMay 23, 2000
Method and apparatus for determining the shape of an earth borehole and the motion of a tool within the borehole
DRESSER IND99 citations96
US6044327AMar 28, 2000
Method for quantifying the lithologic composition of formations surrounding earth boreholes
DRESSER IND57 citations96
US5988303ANov 23, 1999
Gauge face inlay for bit hardfacing
DRESSER IND72 citations96
US5860457AJan 19, 1999
Gasoline vapor recovery system and method utilizing vapor detection
DRESSER IND100 citations96
US5240077AAug 31, 1993
Voltage controlled hydraulic setting tool
DRESSER IND60 citations96
US5201376AApr 13, 1993
Rock bit with improved gage insert
DRESSER IND94 citations96
US5155293AOct 13, 1992
Safety booster for explosive systems
DRESSER IND61 citations96
US5022798AJun 11, 1991
Thrust-responsive two-speed drill and method of operation
DRESSER IND74 citations96
US4772150ASep 20, 1988
Hinge pin assembly
DRESSER IND55 citations96
US4738399AApr 19, 1988
Decoking tool
DRESSER IND67 citations96
US4725512AFeb 16, 1988
Materials transformable from the nonamorphous to the amorphous state under frictional loadings
DRESSER IND78 citations96
Showing the top 50 of 1,232 patents by PatentIndex Score.