Inventor · disambiguated record
Timothy S. Steffenhagen
Also filed as: STEFFENHAGEN TIMOTHY S · STEFFENHAGEN TIMOTHY SCOTT
15 granted patents·1 pending application·232 citations·filing 2000–2022
91Inventor score
Files withNAT OILWELL VARCO LP9NOV INTERVENTION AND STIMULATION EQUIPMENT US LLC3VARCO INT2HYDRA RIG INC1MCCULLOCH DAVID W1
Top patents by PatentIndex Score
16 records- 0197US10024123B2Coiled tubing injector with hydraulic traction slip mitigation circuit and method of useNAT OILWELL VARCO LP·Filed 2014·Granted Jul 17, 2018·152 cites·22 claims
- 0291US6216780B1Coiled tubing injector with improved tractionHYDRA RIG INC·Filed 2000·Granted Apr 17, 2001·52 cites·9 claims
- 0384US8544536B2Coiled tubing injector with limited slip chainsMCCULLOCH DAVID W·Filed 2010·Granted Oct 1, 2013·9 cites·15 claims
- 0479US11661804B1Coiled tubing injector with reactive chain tensionNAT OILWELL VARCO LP·Filed 2022·Granted May 30, 2023·1 cites·20 claims
- 0577US10975634B2Tubing guide stabilizationNAT OILWELL VARCO LP·Filed 2018·Granted Apr 13, 2021·3 cites·20 claims
- 0675US11359446B2Coiled tubing injector with gripper shoe carrier position monitorNOV INTERVENTION AND STIMULATION EQUIPMENT US LLC·Filed 2019·Granted Jun 14, 2022·3 cites·21 claims
- 0768US9581009B2Coiled tubing injector with load sensing tubing guideNAT OILWELL VARCO LP·Filed 2013·Granted Feb 28, 2017·3 cites·21 claims
- 0866US9458682B2Coiled tubing injector with limited slip chainsNAT OILWELL VARCO LP·Filed 2015·Granted Oct 4, 2016·1 cites·12 claims
- 0964US11608695B2Injector remote tubing guide alignment deviceNOV INTERVENTION AND STIMULATION EQUIPMENT US LLC·Filed 2019·Granted Mar 21, 2023·1 cites·27 claims
- 1063US10746205B2Flow responsiveness enhancer for a blowout preventerNAT OILWELL VARCO LP·Filed 2016·Granted Aug 18, 2020·1 cites·21 claims
- 1161US11142439B2Snubbing jack capable of reacting torque loadsNAT OILWELL VARCO LP·Filed 2017·Granted Oct 12, 2021·1 cites·20 claims
- 1256US6648000B2Reel spool and stand assembly for coiled tubing injector systemVARCO INT·Filed 2001·Granted Nov 18, 2003·5 cites·12 claims
- 1351US9151122B2Coiled tubing injector with limited slip chainsNAT OILWELL VARCO LP·Filed 2013·Granted Oct 6, 2015·0 cites·6 claims
- 1449US10352805B2Load-measuring hydraulic cylinderNAT OILWELL VARCO LP·Filed 2016·Granted Jul 16, 2019·0 cites·19 claims
- 1544US12018994B2Chain wear sensorNOV INTERVENTION AND STIMULATION EQUIPMENT US LLC·Filed 2020·Granted Jun 25, 2024·0 cites·18 claims
- 1633US2003201099A1Coiled tubing injector with flow limiterVARCO INT·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →