Inventor
COBERN MARTIN E
US14 patents
⚠️ This page may combine multiple inventors who share the name “COBERN MARTIN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TELECO OILFIELD SERVICES INC
5 patentsUS4716973AJan 5, 1988
Method for evaluation of formation invasion and formation permeability
TELECO OILFIELD SERVICES INC247 citations98
US4647853AMar 3, 1987
Mud turbine tachometer
TELECO OILFIELD SERVICES INC63 citations96
US4813274AMar 21, 1989
Method for measurement of azimuth of a borehole while drilling
TELECO OILFIELD SERVICES INC61 citations94
US4761889AAug 9, 1988
Method for the detection and correction of magnetic interference in the surveying of boreholes
TELECO OILFIELD SERVICES INC65 citations93
US5034929AJul 23, 1991
Means for varying MWD tool operating modes from the surface
TELECO OILFIELD SERVICES INC55 citations92
APS TECHNOLOGY INC
3 patentsUS7681663B2Mar 23, 2010
Methods and systems for determining angular orientation of a drill string
APS TECHNOLOGY INC32 citations92
US7762356B2Jul 27, 2010
Rotary steerable motor system for underground drilling
APS TECHNOLOGY INC44 citations91
US7389830B2Jun 24, 2008
Rotary steerable motor system for underground drilling
APS TECHNOLOGY INC42 citations91