Inventor · disambiguated record
John E. Campbell
Also filed as: CAMPBELL JOHN · CAMPBELL JOHN E · CAMPBELL JOHN EDWARD · CAMPBELL JOHN G
64 granted patents·6 pending applications·3,536 citations·filing 1975–2024
99Inventor score
Top patents by PatentIndex Score
70 records- 0198US7141853B2Method and structure for buried circuits and devicesIBM·Filed 2004·Granted Nov 28, 2006·385 cites·11 claims
- 0298US6759282B2Method and structure for buried circuits and devicesIBM·Filed 2001·Granted Jul 6, 2004·338 cites·20 claims
- 0398US4765404AWhipstock packer assemblyDRILEX SYST INC·Filed 1987·Granted Aug 23, 1988·238 cites·21 claims
- 0497US5022472AHydraulic clamp for rotary drilling headMASX ENERGY SERVICES GROUP INC·Filed 1989·Granted Jun 11, 1991·202 cites·22 claims
- 0593US7506703B2Drilling and hole enlargement deviceSMITH INTERNATIONAL·Filed 2006·Granted Mar 24, 2009·48 cites·11 claims
- 0692US4722615ADrilling apparatus and cutter thereforA Z INT TOOL CO·Filed 1986·Granted Feb 2, 1988·73 cites·16 claims
- 0791US7491588B2Method and structure for buried circuits and devicesIBM·Filed 2006·Granted Feb 17, 2009·17 cites·10 claims
- 0890US5431220AWhipstock starter mill assemblySMITH INTERNATIONAL·Filed 1994·Granted Jul 11, 1995·152 cites·8 claims
- 0990US5154231AWhipstock assembly with hydraulically set anchorMASX ENERGY SERVICES GROUP INC·Filed 1990·Granted Oct 13, 1992·146 cites·14 claims
- 1090US4759413AMethod and apparatus for setting an underwater drilling systemDRILEX SYST INC·Filed 1987·Granted Jul 26, 1988·95 cites·20 claims
- 1189US7320918B2Method and structure for buried circuits and devicesIBM·Filed 2005·Granted Jan 22, 2008·14 cites·17 claims
- 1289US4646826AWell string cutting apparatusA Z INT TOOL CO·Filed 1985·Granted Mar 3, 1987·96 cites·8 claims
- 1388US10487606B2Balancing load on milling cutting elementsSMITH INTERNATIONAL·Filed 2015·Granted Nov 26, 2019·5 cites·20 claims
- 1486US5878818AMechanical set anchor with slips pocketSMITH INTERNATIONAL·Filed 1998·Granted Mar 9, 1999·103 cites·14 claims
- 1586US5829531AMechanical set anchor with slips pocketSMITH INTERNATIONAL·Filed 1996·Granted Nov 3, 1998·108 cites·16 claims
- 1686US5530753AMethods and apparatus for secure hardware configurationIBM·Filed 1994·Granted Jun 25, 1996·112 cites·12 claims
- 1786US5348107APressure balanced inner chamber of a drilling headSMITH INTERNATIONAL·Filed 1993·Granted Sep 20, 1994·105 cites·15 claims
- 1886US5035292AWhipstock starter mill with pressure drop tattletaleMASX ENERGY SERVICE GROUP INC·Filed 1989·Granted Jul 30, 1991·94 cites·22 claims
- 1985US5082020AValve body for oilfield applicationsMASX ENERGY SERVICES GROUP INC·Filed 1990·Granted Jan 21, 1992·52 cites·8 claims
- 2084US8820437B2Cementing whipstock apparatus and methodsERVIN DAVID L·Filed 2011·Granted Sep 2, 2014·12 cites·44 claims
- 2184US6499537B1Well reference apparatus and methodSMITH INTERNATIONAL·Filed 2000·Granted Dec 31, 2002·54 cites·22 claims
- 2284US5365587ASelf modifying access code for altering capabilitiesIBM·Filed 1993·Granted Nov 15, 1994·104 cites·12 claims
- 2383US5530749AMethods and apparatus for secure hardware configurationIBM·Filed 1995·Granted Jun 25, 1996·106 cites·11 claims
- 2481US9228406B2Extended whipstock and mill assemblySWADI SHANTANU N·Filed 2012·Granted Jan 5, 2016·7 cites·18 claims
- 2581US7617367B2Memory system including a two-on-one link memory subsystem interconnectionIBM·Filed 2006·Granted Nov 10, 2009·11 cites·21 claims
- 2681US5427179ARetrievable whipstockSMITH INTERNATIONAL·Filed 1993·Granted Jun 27, 1995·66 cites·11 claims
- 2781US5062450AValve body for oilfield applicationsMASX ENERGY SERVICES GROUP INC·Filed 1990·Granted Nov 5, 1991·75 cites·16 claims
- 2881US4533003ADrilling apparatus and cutter thereforA Z INT TOOL CO·Filed 1984·Granted Aug 6, 1985·54 cites·10 claims
- 2980US5048621AAdjustable bent housing for controlled directional drillingMASX ENERGY SERVICES GROUP INC·Filed 1990·Granted Sep 17, 1991·77 cites·12 claims
- 3080US4865137ADrilling apparatus and cutterDRILEX SYST INC·Filed 1988·Granted Sep 12, 1989·60 cites·14 claims
- 3179US7377328B2Expandable anchorSMITH INTERNATIONAL·Filed 2005·Granted May 27, 2008·18 cites·37 claims
- 3279US5657820ATwo trip window cutting systemSMITH INTERNATIONAL·Filed 1995·Granted Aug 19, 1997·85 cites·14 claims
- 3379US5213158ADual rotating stripper rubber drilling headMASX ENTERGY SERVICES GROUP IN·Filed 1991·Granted May 25, 1993·81 cites·4 claims
- 3477US7448446B2Thru tubing tool and methodSMITH INTERNATIONAL·Filed 2007·Granted Nov 11, 2008·16 cites·40 claims
- 3575US8967300B2Pressure activated flow switch for a downhole toolDEWEY CHARLES H·Filed 2012·Granted Mar 3, 2015·7 cites·6 claims
- 3675US8881845B2Expandable window milling bit and methods of milling a window in casingDEWEY CHARLES H·Filed 2012·Granted Nov 11, 2014·4 cites·17 claims
- 3774US12070588B2Injector and injection method thereforINOCUJECT CORP·Filed 2023·Granted Aug 27, 2024·1 cites·17 claims
- 3870US7597158B2Drilling and hole enlargement deviceSMITH INTERNATIONAL·Filed 2008·Granted Oct 6, 2009·9 cites·41 claims
- 3968US10704329B2Cementing whipstock assembly and running tool with releasably engaged cement tube for minimizing downhole trips during lateral drill sidetracking operationsWILDCAT OIL TOOLS LLC·Filed 2019·Granted Jul 7, 2020·1 cites·20 claims
- 4067US8186458B2Expandable window milling bit and methods of milling a window in casingDEWEY CHARLES H·Filed 2005·Granted May 29, 2012·9 cites·33 claims
- 4167US5671281ASelf modifying access code for altering capabilitiesIBM·Filed 1994·Granted Sep 23, 1997·44 cites·36 claims
- 4266US8200987B2Dynamic object-level code translation for improved performance of a computer processorCAMPBELL JOHN E·Filed 2008·Granted Jun 12, 2012·3 cites·2 claims
- 4366US6543536B2Well reference apparatus and methodSMITH INTERNATIONAL·Filed 2001·Granted Apr 8, 2003·28 cites·26 claims
- 4465US11002082B2Millable bit to whipstock connectorWELLBORE INTEGRITY SOLUTIONS LLC·Filed 2016·Granted May 11, 2021·1 cites·23 claims
- 4565US9206648B2Cementing whipstock apparatus and methodsSMITH INTERNATIONAL·Filed 2013·Granted Dec 8, 2015·2 cites·21 claims
- 4664US7178589B2Thru tubing tool and methodSMITH INTERNATIONAL·Filed 2003·Granted Feb 20, 2007·26 cites·26 claims
- 4761US6935431B2Well reference apparatus and methodSMITH INTERNATIONAL·Filed 2003·Granted Aug 30, 2005·17 cites·21 claims
- 4861US4095283AFirst in-first out memory array containing special bits for replacement addressingIBM·Filed 1976·Granted Jun 13, 1978·20 cites·9 claims
- 4957US7418580B1Dynamic object-level code transaction for improved performance of a computerIBM·Filed 1999·Granted Aug 26, 2008·28 cites·16 claims
- 5057US6648069B2Well reference apparatus and methodSMITH INTERNATIONAL·Filed 2002·Granted Nov 18, 2003·14 cites·12 claims
Showing the top 50 of 70 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →