Inventor · disambiguated record
Keith T. Lutgring
Also filed as: LUTGRING KEITH · LUTGRING KEITH T · LUTGRING KEITH THOMAS
31 granted patents·4 pending applications·859 citations·filing 1997–2022
97Inventor score
Files withFRANK S INR INC14FRANKS INT LLC8LATIOLAIS JR BURNEY J3CASING FRANK S CREW & RENTAL2FRANK'S CASING CREW AND RENTAL TOOLS INC2
Top patents by PatentIndex Score
35 records- 0196US6595288B2Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFRANK S INR INC·Filed 2002·Granted Jul 22, 2003·111 cites·11 claims
- 0295US7874361B2Methods and devices for forming a wellbore with casingFRANK S INR INC·Filed 2009·Granted Jan 25, 2011·33 cites·52 claims
- 0395US7635026B2Methods and devices for forming a wellbore with casingFRANK S INR INC·Filed 2008·Granted Dec 22, 2009·36 cites·60 claims
- 0495US6279654B1Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFiled 1998·Granted Aug 28, 2001·129 cites·36 claims
- 0593US7866390B2Casing make-up and running tool adapted for fluid and cement controlFRANK S INR INC·Filed 2006·Granted Jan 11, 2011·43 cites·32 claims
- 0692US7096948B2Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFRANK S INR INC·Filed 2002·Granted Aug 29, 2006·64 cites·7 claims
- 0791US6302199B1Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wellsFRANK S INR INC·Filed 2000·Granted Oct 16, 2001·104 cites·12 claims
- 0887US11352840B2Drill pipe torque reducer and methodFRANKS INT LLC·Filed 2020·Granted Jun 7, 2022·4 cites·23 claims
- 0986US5918673AMethod and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFRANK S INR INC·Filed 1997·Granted Jul 6, 1999·112 cites·47 claims
- 1083US6425442B1Anti-rotation device for use with well toolsFRANK S INR INC·Filed 2000·Granted Jul 30, 2002·64 cites·34 claims
- 1181US8708043B2Methods and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFRANK S INR INC·Filed 2013·Granted Apr 29, 2014·3 cites·32 claims
- 1277US9567815B2Load ring for lifting by elevator, of casing having an upsetFRANK S INT LLC·Filed 2015·Granted Feb 14, 2017·2 cites·20 claims
- 1377US6571880B1Method and multi-purpose apparatus for control of fluid in wellbore casingFRANK S INR INC·Filed 2000·Granted Jun 3, 2003·54 cites·22 claims
- 1476US11634954B2Surge reduction system for running liner casing in managed pressure drilling wellsFRANKS INT LLC·Filed 2020·Granted Apr 25, 2023·2 cites·3 claims
- 1575US8424604B2Methods and devices for forming a wellbore with casingMOSING DONALD E·Filed 2011·Granted Apr 23, 2013·2 cites·31 claims
- 1675US8082982B2Methods and devices for forming a wellbore with casingMOSING DONALD E·Filed 2011·Granted Dec 27, 2011·2 cites·3 claims
- 1774US7159619B2Thread protector for use on pin end of oilfield tubularsFRANK S INR INC·Filed 2003·Granted Jan 9, 2007·48 cites·16 claims
- 1872US10087690B2Apparatus and method for reducing torque on a drill stringFRANKS INT LLC·Filed 2016·Granted Oct 2, 2018·2 cites·17 claims
- 1970US10724308B2Drill pipe torque reducer and methodFRANKS INT LLC·Filed 2018·Granted Jul 28, 2020·2 cites·19 claims
- 2067US8936292B2Load ring for lifting by elevator, of cassing having no upsetLATIOLAIS JR BURNEY J·Filed 2012·Granted Jan 20, 2015·2 cites·20 claims
- 2164US8348320B2Load ring for lifting by elevator, of casing having no upsetLATIOLAIS JR BURNEY J·Filed 2008·Granted Jan 8, 2013·6 cites·16 claims
- 2262US7370698B2Method and apparatus for transferring rig weight to tubularsFRANK S INR INC·Filed 2006·Granted May 13, 2008·3 cites·8 claims
- 2357US2014224473A1Methods and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFRANK S INR INC·Filed 2014·Application pending·0 cites
- 2456US10907424B2Clamp-on single joint manipulator for use with single joint elevatorFRANKS INT LLC·Filed 2019·Granted Feb 2, 2021·0 cites·13 claims
- 2556US6508312B1Flow control apparatus and methodCASING FRANK S CREW & RENTAL·Filed 2002·Granted Jan 21, 2003·16 cites·7 claims
- 2655USRE41979EFlow control apparatus and methodFRANK S CASING CREW AND RENTAL TOOLS INC·Filed 2005·Granted Dec 7, 2010·4 cites·23 claims
- 2751US7967065B2Caisson systemFRANK S CASING CREW AND RENTAL TOOLS INC·Filed 2007·Granted Jun 28, 2011·2 cites·24 claims
- 2850US12129717B2Drill pipe torque reducer and methodFRANKS INT LLC·Filed 2022·Granted Oct 29, 2024·0 cites·22 claims
- 2950US10415328B2Clamp-on single joint manipulator for use with single joint elevatorFRANKS INT LLC·Filed 2016·Granted Sep 17, 2019·0 cites·11 claims
- 3050US7357434B2Load ring for lifting by elevator, of casing having no upsetFRANK S INR INC·Filed 2003·Granted Apr 15, 2008·9 cites·12 claims
- 3145US8096357B2Casing make-up and running tool adapted for fluid and cement controlLATIOLAIS JR BURNEY J·Filed 2010·Granted Jan 17, 2012·0 cites·9 claims
- 3241US2004211443A1Magnetic plug detectorCASING FRANK S CREW & RENTAL·Filed 2002·Application pending·0 cites
- 3337US10577899B2Combined casing fill-up and drill pipe flowback tool and methodFRANKS INT LLC·Filed 2017·Granted Mar 3, 2020·0 cites·13 claims
- 3436US2008060818A1Light-weight single joint manipulator armBOURGEOIS JOSHUA KYLE·Filed 2006·Application pending·0 cites
- 3536US2002029879A1Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casingFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →