Inventor · disambiguated record
John Martin Clegg
Also filed as: CLEGG JOHN · CLEGG JOHN M · CLEGG JOHN MARTIN
16 granted patents·1,955 citations·filing 1990–2019
96Inventor score
Files withCAMCO DRILLING GROUP LTD5ULTERRA DRILLING TECH LP3CAMCO INT2CAMCO INT UK LTD2APS TECH INC1
Top patents by PatentIndex Score
16 records- 0197US5553678AModulated bias units for steerable rotary drilling systemsCAMCO INT·Filed 1992·Granted Sep 10, 1996·425 cites·35 claims
- 0296US6089332ASteerable rotary drilling systemsCAMCO INT UK LTD·Filed 1998·Granted Jul 18, 2000·279 cites·16 claims
- 0396US5803185ASteerable rotary drilling systems and method of operating such systemsCAMCO DRILLING GROUP LTD·Filed 1996·Granted Sep 8, 1998·277 cites·16 claims
- 0496US5186268ARotary drill bitsCAMCO DRILLING GROUP LTD·Filed 1991·Granted Feb 16, 1993·237 cites·16 claims
- 0595US5685379AMethod of operating a steerable rotary drilling systemCAMCO DRILLING GROUP LTD OF HY·Filed 1996·Granted Nov 11, 1997·249 cites·25 claims
- 0693US5244039ARotary drill bitsCAMCO DRILLING GROUP LTD·Filed 1991·Granted Sep 14, 1993·164 cites·18 claims
- 0791US5119892ANotary drill bitsREED TOOL CO·Filed 1990·Granted Jun 9, 1992·151 cites·4 claims
- 0879US5163524ARotary drill bitsCAMCO DRILLING GROUP LTD·Filed 1991·Granted Nov 17, 1992·69 cites·9 claims
- 0977US7318492B2Rotary drill bitREEDHYCALOG UK LTD·Filed 2005·Granted Jan 15, 2008·17 cites·15 claims
- 1068US10711528B2Diamond cutting elements for drill bits seeded with HCP crystalline materialULTERRA DRILLING TECH LP·Filed 2019·Granted Jul 14, 2020·0 cites·17 claims
- 1166US10160099B2Selectively leached, polycrystalline structures for cutting elements of drill bitsULTERRA DRILLING TECH LP·Filed 2013·Granted Dec 25, 2018·1 cites·26 claims
- 1265US10180032B2Diamond cutting elements for drill bits seeded with HCP crystalline materialULTERRA DRILLING TECH LP·Filed 2013·Granted Jan 15, 2019·2 cites·39 claims
- 1363US11156080B2Monitoring system with an instrumented surface top subAPS TECH INC·Filed 2016·Granted Oct 26, 2021·1 cites·40 claims
- 1460US6089336ARotary drill bitsCAMCO INT UK LTD·Filed 1997·Granted Jul 18, 2000·47 cites·51 claims
- 1551US5671818ARotary drill bitsCAMCO DRILLING GROUP LTD·Filed 1995·Granted Sep 30, 1997·25 cites·15 claims
- 1638US5819860ARotary drill bitsCAMCO INT·Filed 1997·Granted Oct 13, 1998·11 cites·52 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →