Inventor · disambiguated record
James David Ratcliffe
Also filed as: RATCLIFFE JAMES · RATCLIFFE JAMES DAVID
14 granted patents·2 pending applications·65 citations·filing 2009–2020
89Inventor score
Files withBAKER HUGHES OILFIELD OPERATIONS LLC5SONDEX WIRELINE LTD5RATCLIFFE JAMES DAVID3GE OIL & GAS LOGGING SERVICES INC2BUSS JOHN1
Top patents by PatentIndex Score
16 records- 0186US8230932B2Multifunction downhole release tool mechanism with lost motionRATCLIFFE JAMES DAVID·Filed 2010·Granted Jul 31, 2012·22 cites·20 claims
- 0281US8689620B2Pressure balancing deviceRATCLIFFE JAMES DAVID·Filed 2011·Granted Apr 8, 2014·11 cites·20 claims
- 0378US8939039B2Load cell for a downhole load measuring toolRATCLIFFE JAMES DAVID·Filed 2011·Granted Jan 27, 2015·7 cites·18 claims
- 0475US9448320B2Acoustic isolater for a downhole toolGE OIL & GAS LOGGING SERVICES INC·Filed 2013·Granted Sep 20, 2016·4 cites·18 claims
- 0573US11021947B2Sensor bracket positioned on a movable arm system and methodSONDEX WIRELINE LTD·Filed 2018·Granted Jun 1, 2021·2 cites·19 claims
- 0669US10920572B2Sensor deployment system and method using a movable arm with a telescoping sectionSONDEX WIRELINE LTD·Filed 2018·Granted Feb 16, 2021·2 cites·18 claims
- 0767US10883325B2Arm deployment system and methodSONDEX WIRELINE LTD·Filed 2018·Granted Jan 5, 2021·1 cites·17 claims
- 0866US11422205B2Magnetic freepoint indicator toolBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2020·Granted Aug 23, 2022·0 cites·18 claims
- 0966US8453744B2Downhole modulator apparatusBUSS JOHN·Filed 2009·Granted Jun 4, 2013·13 cites·23 claims
- 1065US10907467B2Sensor deployment using a movable arm system and methodSONDEX WIRELINE LTD·Filed 2018·Granted Feb 2, 2021·1 cites·20 claims
- 1164US11725465B2Optical gas sensor assemblyBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2019·Granted Aug 15, 2023·1 cites·20 claims
- 1264US11269021B2Magnetic freepoint indicator toolBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2020·Granted Mar 8, 2022·0 cites·21 claims
- 1361US9638866B2Optical fibre quick connect boxSONDEX WIRELINE LTD·Filed 2015·Granted May 2, 2017·1 cites·14 claims
- 1457US11287545B2Magnetic freepoint indicator toolBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2019·Granted Mar 29, 2022·0 cites·17 claims
- 1547US2020200942A1Opto-Electronics Module for a Downhole Gas Detection SensorBAKER HUGHES OILFIELD OPERATIONS LLC·Filed 2019·Application pending·0 cites
- 1640US2015136385A1Simplified measurement of borehole fluid resistivityGE OIL & GAS LOGGING SERVICES INC·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →