Inventor · disambiguated record
Ronald E. Pringle
Also filed as: PRINGLE RONALD · PRINGLE RONALD E · PRINGLE RONALD EARL
124 granted patents·5,990 citations·filing 1978–2009
99Inventor score
Files withCAMCO INT52CAMCO INC51SCHLUMBERGER TECHNOLOGY CORP10PRINGLE RONALD E3ABSOLUTE OIL TOOLS L L C1
Top patents by PatentIndex Score
124 records- 0198US5411085ASpoolable coiled tubing completion systemCAMCO INT·Filed 1993·Granted May 2, 1995·177 cites·27 claims
- 0296US6068015ASidepocket mandrel with orienting featureCAMCO INT·Filed 1999·Granted May 30, 2000·112 cites·26 claims
- 0396US5542473ASimplified sealing and anchoring device for a well toolFiled 1995·Granted Aug 6, 1996·220 cites·11 claims
- 0496US4531581APiston actuated high temperature well packerCAMCO INC·Filed 1984·Granted Jul 30, 1985·152 cites·3 claims
- 0596US4520870AWell flow control deviceCAMCO INC·Filed 1983·Granted Jun 4, 1985·148 cites·6 claims
- 0696US4161219APiston actuated well safety valveCAMCO INC·Filed 1978·Granted Jul 17, 1979·121 cites·5 claims
- 0794US5394951ABottom hole drilling assemblyCAMCO INT·Filed 1993·Granted Mar 7, 1995·167 cites·6 claims
- 0892US6328109B1Downhole valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Dec 11, 2001·120 cites·54 claims
- 0992US6206645B1Variable orifice gas lift valve for high flow rates with detachable power source and method of usingSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Mar 27, 2001·36 cites·16 claims
- 1092US6070608AVariable orifice gas lift valve for high flow rates with detachable power source and method of usingCAMCO INT·Filed 1997·Granted Jun 6, 2000·113 cites·45 claims
- 1192US4510994APump out subCAMCO INC·Filed 1984·Granted Apr 16, 1985·93 cites·8 claims
- 1292US4252197APiston actuated well safety valveCAMCO INC·Filed 1979·Granted Feb 24, 1981·85 cites·6 claims
- 1391US6302203B1Apparatus and method for communicating with devices positioned outside a liner in a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Oct 16, 2001·106 cites·26 claims
- 1491US5257663AElectrically operated safety release jointCAMCO INTERNATIONA INC·Filed 1992·Granted Nov 2, 1993·107 cites·1 claims
- 1590US4534414AHydraulic control fluid communication nippleCAMCO INC·Filed 1983·Granted Aug 13, 1985·85 cites·6 claims
- 1689US6378610B2Communicating with devices positioned outside a liner in a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2001·Granted Apr 30, 2002·86 cites·19 claims
- 1789US5542472AMetal coiled tubing with signal transmitting passagewayCAMCO INT·Filed 1995·Granted Aug 6, 1996·118 cites·16 claims
- 1889US5425420ASpoolable coiled tubing completion systemCAMCO INT·Filed 1994·Granted Jun 20, 1995·62 cites·2 claims
- 1989US5316094AWell orienting tool and/or thrusterCAMCO INT·Filed 1992·Granted May 31, 1994·121 cites·13 claims
- 2089US4844166AMethod and apparatus for recompleting wells with coil tubingCAMCO INC·Filed 1988·Granted Jul 4, 1989·82 cites·11 claims
- 2188US6148843AVariable orifice gas lift valve for high flow rates with detachable power source and method of usingCAMCO INT·Filed 1998·Granted Nov 21, 2000·62 cites·18 claims
- 2288US5488992ASpoolable flexible sliding sleeveCAMCO INT·Filed 1994·Granted Feb 6, 1996·60 cites·1 claims
- 2388US5465793ASpoolable flexible hydraulic controlled annular control valveCAMCO INT·Filed 1994·Granted Nov 14, 1995·60 cites·6 claims
- 2488US4926945ASubsurface well safety valve with curved flapper and method of makingCAMCO INC·Filed 1989·Granted May 22, 1990·79 cites·7 claims
- 2587US6276458B1Apparatus and method for controlling fluid flowSCHLUMBERGER TECHNOLOGY CORP·Filed 1999·Granted Aug 21, 2001·119 cites·30 claims
- 2687US4771831ALiquid level actuated sleeve valveCAMCO INC·Filed 1987·Granted Sep 20, 1988·78 cites·10 claims
- 2786US5411081ASpoolable flexible hydraulically set, straight pull release well packerCAMCO INT·Filed 1994·Granted May 2, 1995·57 cites·3 claims
- 2885US5423383ASpoolable flexible hydraulic controlled coiled tubing safety valveCAMCO INT·Filed 1994·Granted Jun 13, 1995·52 cites·5 claims
- 2985US4574889AMethod and apparatus for locking a subsurface safety valve in the open positionCAMCO INC·Filed 1985·Granted Mar 11, 1986·70 cites·10 claims
- 3085US4373587AFluid displacement well safety valveCAMCO INC·Filed 1980·Granted Feb 15, 1983·65 cites·16 claims
- 3184US7363980B2Downhole flow control apparatus, operable via surface applied pressureABSOLUTE OIL TOOLS L L C·Filed 2006·Granted Apr 29, 2008·31 cites·4 claims
- 3284US6308783B2Wellbore flow control deviceSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Oct 30, 2001·56 cites·35 claims
- 3383USRE36723ESpoolable coiled tubing completion systemCAMCO INT·Filed 1997·Granted Jun 6, 2000·56 cites·28 claims
- 3483US5483988ASpoolable coiled tubing mandrel and gas lift valvesCAMCO INT·Filed 1994·Granted Jan 16, 1996·62 cites·20 claims
- 3582US6082455ACombination side pocket mandrel flow measurement and control assemblyCAMCO INT·Filed 1998·Granted Jul 4, 2000·76 cites·45 claims
- 3682US4621695ABalance line hydraulically operated well safety valveCAMCO INC·Filed 1984·Granted Nov 11, 1986·55 cites·5 claims
- 3782US4444266ADeep set piston actuated well safety valveCAMCO INC·Filed 1983·Granted Apr 24, 1984·57 cites·7 claims
- 3881US6305402B2Variable orifice gas lift valve for high flow rates with detachable power source and method of usingCAMCO INT·Filed 2000·Granted Oct 23, 2001·17 cites·17 claims
- 3981USRE36525ESpoolable flexible hydraulically set, straight pull release well packerCAMCO INT·Filed 1997·Granted Jan 25, 2000·50 cites·4 claims
- 4081US5230383AElectrically actuated well annulus safety valveCAMCO INT·Filed 1992·Granted Jul 27, 1993·51 cites·4 claims
- 4179US6012518AElectro-hydraulic well tool actuatorCAMCO INT·Filed 1998·Granted Jan 11, 2000·83 cites·64 claims
- 4279US5314032AMovable joint bent subCAMCO INT·Filed 1993·Granted May 24, 1994·68 cites·13 claims
- 4379US5207272AElectrically actuated well packerCAMCO INT·Filed 1992·Granted May 4, 1993·47 cites·4 claims
- 4478USRE36880ESpoolable flexible hydraulic controlled coiled tubing safety valveCAMCO INT·Filed 1997·Granted Sep 26, 2000·43 cites·6 claims
- 4578US5996687AFull bore variable flow control deviceCAMCO INT·Filed 1998·Granted Dec 7, 1999·73 cites·14 claims
- 4678US5469878ACoiled tubing concentric gas lift valve assemblyCAMCO INT·Filed 1993·Granted Nov 28, 1995·64 cites·12 claims
- 4778US5311939AMultiple use well packerCAMCO INT·Filed 1992·Granted May 17, 1994·63 cites·7 claims
- 4878US4601342AWell injection valve with retractable chokeCAMCO INC·Filed 1985·Granted Jul 22, 1986·52 cites·5 claims
- 4976US8316944B2System for pulse-injecting fluid into a boreholePRINGLE RONALD E·Filed 2009·Granted Nov 27, 2012·19 cites·12 claims
- 5076US4676307APressure charged low spread safety valveCAMCO INC·Filed 1984·Granted Jun 30, 1987·43 cites·4 claims
Showing the top 50 of 124 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →