Inventor · disambiguated record
Christopher Durrand
Also filed as: DURRAND CHRISTOPHER · DURRAND CHRISTOPHER J
17 granted patents·2 pending applications·419 citations·filing 2006–2010
95Inventor score
Top patents by PatentIndex Score
19 records- 0197US8061784B2Retention systemHALL DAVID R·Filed 2008·Granted Nov 22, 2011·45 cites·21 claims
- 0297US8033615B2Retention systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Oct 11, 2011·46 cites·21 claims
- 0397US7453768B2High-speed, downhole, cross well measurement systemHALL DAVID R·Filed 2006·Granted Nov 18, 2008·68 cites·11 claims
- 0497US7398837B2Drill bit assembly with a logging deviceHALL DAVID R·Filed 2006·Granted Jul 15, 2008·91 cites·34 claims
- 0597US7265649B1Flexible inductive resistivity deviceHALL DAVID R·Filed 2007·Granted Sep 4, 2007·42 cites·20 claims
- 0696US7426968B2Drill bit assembly with a probeHALL DAVID R·Filed 2006·Granted Sep 23, 2008·32 cites·22 claims
- 0781US7969819B2Method for taking time-synchronized seismic measurementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Jun 28, 2011·17 cites·20 claims
- 0877US8140259B2Location device with a gravity measuring deviceHALL DAVID R·Filed 2010·Granted Mar 20, 2012·5 cites·8 claims
- 0975US8316964B2Drill bit transducer deviceHALL DAVID R·Filed 2007·Granted Nov 27, 2012·14 cites·29 claims
- 1074US8130117B2Drill bit with an electrically isolated transmitterHALL DAVID R·Filed 2007·Granted Mar 6, 2012·13 cites·22 claims
- 1170US7946656B2Retention systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted May 24, 2011·7 cites·20 claims
- 1270US7598886B2System and method for wirelessly communicating with a downhole drill stringHALL DAVID R·Filed 2006·Granted Oct 6, 2009·11 cites·9 claims
- 1367US8061443B2Downhole sample rate systemHALL DAVID R·Filed 2008·Granted Nov 22, 2011·9 cites·17 claims
- 1464US8267196B2Flow guide actuationHALL DAVID R·Filed 2009·Granted Sep 18, 2012·6 cites·20 claims
- 1560US7572134B2Centering assembly for an electric downhole connectionHALL DAVID R·Filed 2007·Granted Aug 11, 2009·6 cites·20 claims
- 1655US8408336B2Flow guide actuationHALL DAVID R·Filed 2009·Granted Apr 2, 2013·3 cites·17 claims
- 1755US8237584B2Changing communication priorities for downhole LWD/MWD applicationsHALL DAVID R·Filed 2009·Granted Aug 7, 2012·4 cites·20 claims
- 1849US2009012741A1Location Device with a Gravity Measuring DeviceHALL DAVID R·Filed 2007·Application pending·0 cites
- 1939US2009025982A1Stabilizer AssemblyHALL DAVID R·Filed 2007·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →