Inventor · disambiguated record
Vern Hult
Also filed as: HULT VERN · HULT VERN A · HULT VERN ARTHUR
17 granted patents·4 pending applications·434 citations·filing 1995–2024
93Inventor score
Files withEVOLUTION OIL TOOLS INC6OIL LIFT TECHNOLOGY INC5WEATHERFORD HOLDING U S INC4HULT VERN A2OIL LIFT TECH INC2
Top patents by PatentIndex Score
21 records- 0192US6843313B2Pump drive head with stuffing boxOIL LIFT TECHNOLOGY INC·Filed 2001·Granted Jan 18, 2005·106 cites·127 claims
- 0288US6079489ACentrifugal backspin retarder and drivehead for use therewithWEATHERFORD HOLDING U S INC·Filed 1998·Granted Jun 27, 2000·54 cites·12 claims
- 0387US9027717B2Cam-actuated centrifugal brake for preventing backspinHULT VERN A·Filed 2006·Granted May 12, 2015·12 cites·26 claims
- 0486US5507357APilot bit for use in auger bit assemblyFOREMOST IND INC·Filed 1995·Granted Apr 16, 1996·143 cites·13 claims
- 0581US6113355APump drive head pump assembly with a hydraulic pump circuit for preventing back-spin when the drive head has been shut offWEATHERFORD HOLDING U S INC·Filed 1997·Granted Sep 5, 2000·41 cites·21 claims
- 0680US9322238B2Polish rod locking clampOIL LIFT TECHNOLOGY INC·Filed 2015·Granted Apr 26, 2016·3 cites·14 claims
- 0760US7044217B2Stuffing box for progressing cavity pump driveOIL LIFT TECHNOLOGY INC·Filed 2003·Granted May 16, 2006·24 cites·58 claims
- 0858US2018363403A1Pump drive head with stuffing boxOIL LIFT TECH INC·Filed 2018·Application pending·0 cites
- 0956US12276169B2Tubing hanger and wellhead assembly with tubing hangerEVOLUTION OIL TOOLS INC·Filed 2023·Granted Apr 15, 2025·0 cites·6 claims
- 1054US10087696B2Polish rod locking clampOIL LIFT TECH INC·Filed 2016·Granted Oct 2, 2018·0 cites·14 claims
- 1151US12084938B2Tubing hanger with tensioner mechanismEVOLUTION OIL TOOLS INC·Filed 2022·Granted Sep 10, 2024·0 cites·12 claims
- 1247US2025188809A1Anti-vibration system for pc pumpsEVOLUTION OIL TOOLS INC·Filed 2024·Application pending·0 cites
- 1346US6125931ARight angle drive adapter for use with a vertical drive head in an oil well progressing cavity pump driveWEATHERFORD HOLDING U S INC·Filed 1998·Granted Oct 3, 2000·26 cites·8 claims
- 1444US12234710B2Drive assembly for a well siteEVOLUTION OIL TOOLS INC·Filed 2022·Granted Feb 25, 2025·0 cites·17 claims
- 1544US11732541B2Dual tubing string adaptorEVOLUTION OIL TOOLS INC·Filed 2022·Granted Aug 22, 2023·0 cites·5 claims
- 1642US12139990B2Dual string hanger assemblyEVOLUTION OIL TOOLS INC·Filed 2022·Granted Nov 12, 2024·0 cites·8 claims
- 1741US6135740APump drive head backspin retarderWEATHERFORD HOLDING U S INC·Filed 1997·Granted Oct 24, 2000·22 cites·15 claims
- 1840US9016362B2Polish rod locking clampHULT VERN A·Filed 2004·Granted Apr 28, 2015·3 cites·9 claims
- 1938US9074727B2Safety guard for a rotatable memberOIL LIFT TECHNOLOGY INC·Filed 2013·Granted Jul 7, 2015·0 cites·11 claims
- 2035US2011266005A1Continuous rod pump drive systemOIL LIFT TECHNOLOGY INC·Filed 2011·Application pending·0 cites
- 2131US2013062048A1Pulling clamp for continuous rod or coiled tubing stringsHULT VERN·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →