Inventor · disambiguated record
Steven W. Wentworth
Also filed as: WENTWORTH STEVEN W
76 granted patents·27 pending applications·1,519 citations·filing 1987–2024
99Inventor score
Files withEARTH TOOL CO LLC58WENTWORTH STEVEN W16CHARLES MACHINE WORKS12EARTH TOOL CORP9EARTH TOOL LLC1
Top patents by PatentIndex Score
103 records- 0193US7086808B2Method and apparatus for on-grade boringEARTH TOOL CO LLC·Filed 2002·Granted Aug 8, 2006·52 cites·15 claims
- 0293US6761507B2Method and apparatus for replacement of underground pipeEARTH TOOL CO LLC·Filed 2001·Granted Jul 13, 2004·48 cites·31 claims
- 0390US6568488B2Roller pipe bursterEARTH TOOL CO LLC·Filed 2001·Granted May 27, 2003·100 cites·22 claims
- 0488US6588515B2Drill bit for directional drillingEARTH TOOL CO LLC·Filed 2001·Granted Jul 8, 2003·23 cites·43 claims
- 0588US6390087B1Drill bit for directional drillingEARTH TOOL CO LLC·Filed 1999·Granted May 21, 2002·39 cites·13 claims
- 0688US6148935AJoint for use in a directional boring apparatusEARTH TOOL CO LLC·Filed 1998·Granted Nov 21, 2000·81 cites·31 claims
- 0788US4775163AMotorcycleHARLEY DAVIDSON INC·Filed 1987·Granted Oct 4, 1988·60 cites·29 claims
- 0887US10969053B2Lead pipe spudding prior to extraction or remediationEARTH TOOL CO LLC·Filed 2018·Granted Apr 6, 2021·3 cites·14 claims
- 0987US6755593B2Pipe replacement method and rotary impact mechanism for pipe burstingEARTH TOOL CO LLC·Filed 2002·Granted Jun 29, 2004·38 cites·14 claims
- 1086US10584807B2Extraction of ductile pipeEARTH TOOL CO LLC·Filed 2018·Granted Mar 10, 2020·3 cites·40 claims
- 1186US8955586B1Beacon assemblyRANDA MARK D·Filed 2012·Granted Feb 17, 2015·10 cites·16 claims
- 1283US7128499B2Method for extracting underground pipeEARTH TOOL CO LLC·Filed 2005·Granted Oct 31, 2006·16 cites·25 claims
- 1381US11619336B2Pipe slitting machine with rope storage reelCHARLES MACHINE WORKS·Filed 2020·Granted Apr 4, 2023·1 cites·22 claims
- 1479US12410879B2Latch assembly for use with an inversion drumCHARLES MACHINE WORKS·Filed 2024·Granted Sep 9, 2025·0 cites·23 claims
- 1578US10246949B2Slip style rod spinner for pipe bursting machineEARTH TOOL CO LLC·Filed 2018·Granted Apr 2, 2019·2 cites·19 claims
- 1678US6450269B1Method and bit for directional horizontal boringEARTH TOOL CO LLC·Filed 2000·Granted Sep 17, 2002·53 cites·17 claims
- 1777US8640793B2Dynamic steering toolWENTWORTH STEVEN W·Filed 2012·Granted Feb 4, 2014·5 cites·27 claims
- 1877US6860514B2Drill string jointEARTHJTOOL COMPANY L L C·Filed 2003·Granted Mar 1, 2005·56 cites·6 claims
- 1977US6263983B1Apparatus for directional drillingEARTH TOOL CO LLC·Filed 1999·Granted Jul 24, 2001·23 cites·19 claims
- 2077US5025868APneumatic ground piercing toolEARTH TOOL CORP·Filed 1989·Granted Jun 25, 1991·52 cites·23 claims
- 2176US8979435B2Rod pulling and pushing machine for pipe burstingWENTWORTH STEVEN W·Filed 2011·Granted Mar 17, 2015·4 cites·10 claims
- 2275US7255516B2Method and apparatus for replacement of underground pipeEARTH TOOL CO LLC·Filed 2005·Granted Aug 14, 2007·13 cites·10 claims
- 2375US6470979B1Sonde housing structureEARTH TOOL CO LLC·Filed 2000·Granted Oct 29, 2002·45 cites·20 claims
- 2475US5782311AMethod and apparatus for installation of underground pipesEARTH TOOL CO LLC·Filed 1997·Granted Jul 21, 1998·66 cites·19 claims
- 2575US5651639AMethod and apparatus for installation of underground pipeEARTH TOOL CO LLC·Filed 1995·Granted Jul 29, 1997·42 cites·17 claims
- 2674US6792820B2Method and accessories for pipe replacementEARTH TOOL CO LLC·Filed 2002·Granted Sep 21, 2004·29 cites·19 claims
- 2774US6260634B1Sonde housing for directional drillingEARTH TOOL CO LLC·Filed 1999·Granted Jul 17, 2001·42 cites·20 claims
- 2873US10161201B2Powered slip actuationEARTH TOOL CO LLC·Filed 2017·Granted Dec 25, 2018·1 cites·18 claims
- 2972US6299382B1Method for installing an underground pipeEARTH TOOL CO LLC·Filed 1996·Granted Oct 9, 2001·30 cites·8 claims
- 3070US8225885B2Joint for use in back reamingWENTWORTH STEVEN W·Filed 2009·Granted Jul 24, 2012·11 cites·8 claims
- 3170US6302410B1Rod gripping jawEARTH TOOL CO LLC·Filed 1999·Granted Oct 16, 2001·55 cites·14 claims
- 3269US7500651B2Portable winchEARTH TOOL CO LLC·Filed 2006·Granted Mar 10, 2009·8 cites·11 claims
- 3369US6789635B2Drill bit for directional drilling in cobble formationsEARTH TOOL CO LLC·Filed 2002·Granted Sep 14, 2004·32 cites·33 claims
- 3468US2022325825A1System and method for extracting a buried pipeCHARLES MACHINE WORKS·Filed 2022·Application pending·0 cites
- 3567US12092257B2Lead pipe spudding prior to extraction or remediationCHARLES MACHINE WORKS·Filed 2021·Granted Sep 17, 2024·0 cites·15 claims
- 3667US6321858B1Bit for directional drillingEARTH TOOL CO LLC·Filed 2000·Granted Nov 27, 2001·31 cites·20 claims
- 3766US10883628B2Extraction of ductile pipeCHARLES MACHINE WORKS·Filed 2020·Granted Jan 5, 2021·0 cites·18 claims
- 3866US2021364102A1Pipe Extraction Assisted By Pre-Stressed StrandCHARLES MACHINE WORKS·Filed 2021·Application pending·0 cites
- 3965US11112033B2Pipe extraction assisted by pre-stressed strandCHARLES MACHINE WORKS·Filed 2020·Granted Sep 7, 2021·0 cites·18 claims
- 4065US10550989B2Latch assembly for use with an inversion drumEARTH TOOL CO LLC·Filed 2018·Granted Feb 4, 2020·1 cites·20 claims
- 4164US7048257B2Winch with telescoping mastEARTH TOOL CO LLC·Filed 2003·Granted May 23, 2006·21 cites·16 claims
- 4264US6581680B1Apparatus for mounting an electronic device for use in directional drillingEARTH TOOL CO LLC·Filed 2002·Granted Jun 24, 2003·23 cites·10 claims
- 4364US5317953ANeutral-centering valve control systemEARTH TOOL CORP·Filed 1992·Granted Jun 7, 1994·17 cites·22 claims
- 4463US11913570B1System for applying torsional force to a buried pipe to facilitate extractionCHARLES MACHINE WORKS·Filed 2021·Granted Feb 27, 2024·0 cites·19 claims
- 4563US6533052B2Drill bit for impact-assisted directional boringEARTH TOOL CO LLC·Filed 2001·Granted Mar 18, 2003·27 cites·12 claims
- 4661US9915109B2Slip style rod spinner for pipe bursting machineEARTH TOOL CO LLC·Filed 2014·Granted Mar 13, 2018·1 cites·17 claims
- 4761US2025141196A1Jaw engagement assist systemCHARLES MACHINE WORKS·Filed 2024·Application pending·0 cites
- 4861US2020056725A1System And Method For Extracting A Buried PipeEARTH TOOL CO LLC·Filed 2019·Application pending·0 cites
- 4960US12281726B2Pipe extraction assisted by pre-stressed strandCHARLES MACHINE WORKS·Filed 2022·Granted Apr 22, 2025·0 cites·19 claims
- 5060US6655874B2Method and apparatus for slitting flexible pipe in an underground boreEARTH TOOL CO LLC·Filed 2001·Granted Dec 2, 2003·9 cites·22 claims
Showing the top 50 of 103 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →