Inventor · disambiguated record
Martin E. Cobern
Also filed as: COBERN MARTIN E
14 granted patents·818 citations·filing 1983–2014
95Inventor score
Files withTELECO OILFIELD SERVICES INC5APS TECHNOLOGY INC3WASSELL MARK ELLSWORTH2ALCAN INT LTD1APS TECH INC1
Top patents by PatentIndex Score
14 records- 0197US4716973AMethod for evaluation of formation invasion and formation permeabilityTELECO OILFIELD SERVICES INC·Filed 1986·Granted Jan 5, 1988·247 cites·27 claims
- 0293US4647853AMud turbine tachometerTELECO OILFIELD SERVICES INC·Filed 1983·Granted Mar 3, 1987·63 cites·32 claims
- 0392US7762356B2Rotary steerable motor system for underground drillingAPS TECHNOLOGY INC·Filed 2008·Granted Jul 27, 2010·44 cites·28 claims
- 0491US7389830B2Rotary steerable motor system for underground drillingAPS TECHNOLOGY INC·Filed 2005·Granted Jun 24, 2008·42 cites·53 claims
- 0590US8397562B2Apparatus for measuring bending on a drill bit operating in a wellWASSELL MARK ELLSWORTH·Filed 2009·Granted Mar 19, 2013·27 cites·1 claims
- 0689US5034929AMeans for varying MWD tool operating modes from the surfaceTELECO OILFIELD SERVICES INC·Filed 1989·Granted Jul 23, 1991·55 cites·12 claims
- 0788US10113363B2System and related methods for control of a directional drilling operationAPS TECH INC·Filed 2014·Granted Oct 30, 2018·9 cites·23 claims
- 0887US9458679B2Apparatus and method for damping vibration in a drill stringTURNER WILLIAM EVANS·Filed 2011·Granted Oct 4, 2016·14 cites·36 claims
- 0987US7681663B2Methods and systems for determining angular orientation of a drill stringAPS TECHNOLOGY INC·Filed 2006·Granted Mar 23, 2010·32 cites·36 claims
- 1085US5242020AMethod for deploying extendable arm for formation evaluation MWD toolBAKER HUGHES INC·Filed 1990·Granted Sep 7, 1993·94 cites·8 claims
- 1181US4761889AMethod for the detection and correction of magnetic interference in the surveying of boreholesTELECO OILFIELD SERVICES INC·Filed 1986·Granted Aug 9, 1988·65 cites·18 claims
- 1278US4894923AMethod and apparatus for measurement of azimuth of a borehole while drillingALCAN INT LTD·Filed 1987·Granted Jan 23, 1990·62 cites·12 claims
- 1378US4813274AMethod for measurement of azimuth of a borehole while drillingTELECO OILFIELD SERVICES INC·Filed 1987·Granted Mar 21, 1989·61 cites·10 claims
- 1475US9279903B2Apparatus for measuring bending on a drill bit operating in a wellWASSELL MARK ELLSWORTH·Filed 2013·Granted Mar 8, 2016·3 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →