Inventor · disambiguated record
Jonathan Marshall
Also filed as: MARSHALL JONATHAN · MARSHALL JONATHAN D
79 granted patents·13 pending applications·811 citations·filing 2006–2023
99Inventor score
Files withHALL DAVID R34SCHLUMBERGER TECHNOLOGY CORP30NOVATEK IP LLC16CAMERON INT CORP4SMITH INTERNATIONAL4
Top patents by PatentIndex Score
92 records- 0198US10711833B2Hard bearing attachment and alignment systems, apparatus, and techniquesSCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Granted Jul 14, 2020·24 cites·21 claims
- 0298US10683895B2Systems and devices using hard bearingsSCHLUMBERGER TECHNOLOGY CORP·Filed 2018·Granted Jun 16, 2020·29 cites·20 claims
- 0397US8061784B2Retention systemHALL DAVID R·Filed 2008·Granted Nov 22, 2011·45 cites·21 claims
- 0497US8033615B2Retention systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Oct 11, 2011·46 cites·21 claims
- 0596US7648210B2Pick with an interlocked bolsterHALL DAVID R·Filed 2008·Granted Jan 19, 2010·51 cites·20 claims
- 0696US7404725B2Wiper for tool string direct electrical connectionHALL DAVID R·Filed 2007·Granted Jul 29, 2008·61 cites·18 claims
- 0795US10113399B2Downhole turbine assemblyNOVATEK IP LLC·Filed 2016·Granted Oct 30, 2018·10 cites·19 claims
- 0895US8414085B2Shank assembly with a tensioned elementHALL DAVID R·Filed 2008·Granted Apr 9, 2013·43 cites·16 claims
- 0995US8007051B2Shank assemblySCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Aug 30, 2011·47 cites·23 claims
- 1094US7537051B1Downhole power generation assemblyHALL DAVID R·Filed 2008·Granted May 26, 2009·45 cites·19 claims
- 1193US11118408B2Downhole steering system and methodsNOVATEK IP LLC·Filed 2018·Granted Sep 14, 2021·13 cites·18 claims
- 1292US11795763B2Downhole tools having radially extendable elementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2021·Granted Oct 24, 2023·2 cites·20 claims
- 1392US10030704B2Systems and devices using hard bearingsSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted Jul 24, 2018·5 cites·20 claims
- 1491US8365821B2System for a downhole string with a downhole valveHALL DAVID R·Filed 2010·Granted Feb 5, 2013·19 cites·20 claims
- 1590US10830359B2Needle tip and seat for a choke valveCAMERON INT CORP·Filed 2017·Granted Nov 10, 2020·5 cites·19 claims
- 1690US8333254B2Steering mechanism with a ring disposed about an outer diameter of a drill bit and method for drillingHALL DAVID R·Filed 2010·Granted Dec 18, 2012·14 cites·14 claims
- 1789US10837234B2Unidirectionally extendable cutting element steeringNOVATEK IP LLC·Filed 2018·Granted Nov 17, 2020·5 cites·18 claims
- 1889US10731420B2Indexing drill bitSCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Granted Aug 4, 2020·7 cites·19 claims
- 1988US11053961B2Piston control via adjustable rodNOVATEK IP LLC·Filed 2018·Granted Jul 6, 2021·3 cites·20 claims
- 2088US9556682B2Underreamer for increasing a wellbore diameterSMITH INTERNATIONAL·Filed 2014·Granted Jan 31, 2017·8 cites·23 claims
- 2187US9085941B2Downhole tool piston assemblyHALL DAVID R·Filed 2012·Granted Jul 21, 2015·8 cites·18 claims
- 2287US7488194B2Downhole data and/or power transmission systemHALL DAVID R·Filed 2006·Granted Feb 10, 2009·32 cites·24 claims
- 2386US10669786B2Two-part bit wiring assemblyNOVATEK IP LLC·Filed 2018·Granted Jun 2, 2020·4 cites·20 claims
- 2486US8297375B2Downhole turbineHALL DAVID R·Filed 2008·Granted Oct 30, 2012·27 cites·17 claims
- 2585US8365820B2System for a downhole string with a downhole valveHALL DAVID R·Filed 2010·Granted Feb 5, 2013·10 cites·20 claims
- 2685US7730972B2Downhole turbineSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Jun 8, 2010·25 cites·18 claims
- 2785US7537053B1Downhole electrical connectionHALL DAVID R·Filed 2008·Granted May 26, 2009·21 cites·17 claims
- 2883US10633923B2Slidable rod downhole steeringNOVATEK IP LLC·Filed 2018·Granted Apr 28, 2020·3 cites·20 claims
- 2983US10577917B2Downhole drill bit chassisNOVATEK IP LLC·Filed 2018·Granted Mar 3, 2020·3 cites·19 claims
- 3083US7730975B2Drill bit porting systemSCHLUMBERGER TECHNOLOGY CORP·Filed 2008·Granted Jun 8, 2010·23 cites·16 claims
- 3182US10907448B2Downhole turbine assemblyNOVATEK IP LLC·Filed 2018·Granted Feb 2, 2021·2 cites·20 claims
- 3281US8297378B2Turbine driven hammer that oscillates at a constant frequencyHALL DAVID R·Filed 2009·Granted Oct 30, 2012·19 cites·20 claims
- 3380US12152680B2Needle tip and seat for a choke valveCAMERON INT CORP·Filed 2023·Granted Nov 26, 2024·0 cites·9 claims
- 3479US12435575B2Downhole tools having radially extendable elementsSCHLUMBERGER TECHNOLOGY CORP·Filed 2023·Granted Oct 7, 2025·0 cites·16 claims
- 3579US10190368B2Underreamer for increasing a wellbore diameterSMITH INTERNATIONAL·Filed 2016·Granted Jan 29, 2019·2 cites·18 claims
- 3679US8342266B2Timed steering nozzle on a downhole drill bitHALL DAVID R·Filed 2011·Granted Jan 1, 2013·6 cites·16 claims
- 3779US8172009B2Expandable tool with at least one blade that locks in place through a wedging effectHALL DAVID R·Filed 2011·Granted May 8, 2012·6 cites·17 claims
- 3879US7624821B1Constricting flow diverterHALL DAVID R·Filed 2008·Granted Dec 1, 2009·17 cites·18 claims
- 3978US11220865B2Downhole drilling apparatus with rotatable cutting elementNOVATEK IP LLC·Filed 2019·Granted Jan 11, 2022·2 cites·20 claims
- 4077US10472934B2Downhole transducer assemblyNOVATEK IP LLC·Filed 2017·Granted Nov 12, 2019·2 cites·20 claims
- 4177US10439474B2Turbines and methods of generating electricitySCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Granted Oct 8, 2019·1 cites·20 claims
- 4277US8201645B2Downhole tool string component that is protected from drilling stressesHALL DAVID R·Filed 2009·Granted Jun 19, 2012·15 cites·16 claims
- 4376US8365843B2Downhole tool actuationSCHLUMBERGER TECHNOLOGY CORP·Filed 2009·Granted Feb 5, 2013·13 cites·10 claims
- 4476US7462051B2Wiper for tool string direct electrical connectionHALL DAVID R·Filed 2008·Granted Dec 9, 2008·12 cites·20 claims
- 4575US11796068B2Needle tip and seat for a choke valveCAMERON INT CORP·Filed 2022·Granted Oct 24, 2023·0 cites·9 claims
- 4675US7661487B2Downhole percussive tool with alternating pressure differentialsHALL DAVID R·Filed 2009·Granted Feb 16, 2010·14 cites·19 claims
- 4774US8281880B2Expandable tool for an earth boring systemHALL DAVID R·Filed 2010·Granted Oct 9, 2012·4 cites·19 claims
- 4873US8353354B2Crawler system for an earth boring systemHALL DAVID R·Filed 2010·Granted Jan 15, 2013·4 cites·11 claims
- 4971US11255143B2Pressure range control in a downhole transducer assemblySCHLUMBERGER TECHNOLOGY CORP·Filed 2018·Granted Feb 22, 2022·1 cites·13 claims
- 5070US11549593B2Needle tip and seat for a choke valveCAMERON INT CORP·Filed 2020·Granted Jan 10, 2023·0 cites·13 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →