Inventor · disambiguated record
Per Angman
Also filed as: ANGMAN PER · ANGMAN PER G
66 granted patents·12 pending applications·1,040 citations·filing 1993–2024
99Inventor score
Top patents by PatentIndex Score
78 records- 0196US10662750B2Methods and electrically-actuated apparatus for wellbore operationsKOBOLD CORP·Filed 2019·Granted May 26, 2020·10 cites·17 claims
- 0296US5433279APortable top drive assemblyFiled 1993·Granted Jul 18, 1995·224 cites·9 claims
- 0394US10287866B2Methods and electrically-actuated apparatus for wellbore operationsKOBOLD CORP·Filed 2017·Granted May 14, 2019·8 cites·21 claims
- 0494US10024150B2Bottom hole assembly for wellbore completionKOBOLD SERVICES INC·Filed 2014·Granted Jul 17, 2018·19 cites·26 claims
- 0594US7909109B2Anchoring device for a wellbore toolTESCO CORP·Filed 2007·Granted Mar 22, 2011·45 cites·15 claims
- 0692US7878237B2Actuation system for an oilfield tubular handling systemTESCO CORP·Filed 2007·Granted Feb 1, 2011·43 cites·25 claims
- 0792US7694730B2Spear type blow out preventerTESCO CORP·Filed 2005·Granted Apr 13, 2010·45 cites·12 claims
- 0891US10472928B2Downhole sleeve assembly and sleeve actuator thereforKOBOLD SERVICES INC·Filed 2016·Granted Nov 12, 2019·7 cites·22 claims
- 0990US11649696B2Wireline completion tool and methodKOBOLD CORP·Filed 2021·Granted May 16, 2023·2 cites·19 claims
- 1090US10704383B2Downhole operations using remote operated sleeves and apparatus thereforKOBOLD CORP·Filed 2016·Granted Jul 7, 2020·6 cites·27 claims
- 1190US10267140B2Extendable/collapsible apparatus for fracture imaging and use of sameKOBOLD SERVICES INC·Filed 2016·Granted Apr 23, 2019·6 cites·20 claims
- 1290US6513223B1Method for installing a centralizer retaining collar and outer sleeveTESCO CORP·Filed 2000·Granted Feb 4, 2003·37 cites·27 claims
- 1388US7044241B2Method for drilling with casingTESCO CORP·Filed 2001·Granted May 16, 2006·87 cites·41 claims
- 1488US7013992B2Borehole stabilization while drillingTESCO CORP·Filed 2003·Granted Mar 21, 2006·63 cites·78 claims
- 1586US11959359B2Sleeve valves, shifting tools and methods for wellbore completion operations therewithKOBOLD CORP·Filed 2022·Granted Apr 16, 2024·1 cites·10 claims
- 1685US11346169B2Sleeve valves, shifting tools and methods for wellbore completion operations therewithKOBOLD CORP·Filed 2019·Granted May 31, 2022·3 cites·19 claims
- 1785US7640984B2Method for drilling and casing a wellbore with a pump down cement floatTESCO CORP·Filed 2007·Granted Jan 5, 2010·21 cites·18 claims
- 1884US9720118B2Microseismic monitoring with fiber-optic noise mappingKOBOLD SERVICES INC·Filed 2013·Granted Aug 1, 2017·5 cites·18 claims
- 1983US11208871B2Apparatus, systems and methods for completion operationsKOBOLD CORP·Filed 2020·Granted Dec 28, 2021·2 cites·22 claims
- 2083US7673675B2Pipe handling device and safety mechanismTESCO CORP·Filed 2006·Granted Mar 9, 2010·22 cites·32 claims
- 2181US11952858B2Isolation tool and methods of use thereofANGMAN PER·Filed 2022·Granted Apr 9, 2024·1 cites·7 claims
- 2281US7475742B2Method for drilling with casingTESCO CORP·Filed 2006·Granted Jan 13, 2009·18 cites·27 claims
- 2378US12060756B2Coupled downhole shifting and treatment tools and methodology for completion and production operationsKOBOLD CORP·Filed 2020·Granted Aug 13, 2024·1 cites·22 claims
- 2478US11319802B2Downhole operations using remote operated sleeves and apparatus thereforKOBOLD CORP·Filed 2020·Granted May 3, 2022·1 cites·33 claims
- 2577US10100588B2Mixed form tubular centralizers and method of useANGMAN PER·Filed 2016·Granted Oct 16, 2018·2 cites·12 claims
- 2677US7624820B2Method for drilling with casingTESCO CORP·Filed 2008·Granted Dec 1, 2009·13 cites·19 claims
- 2776US10472919B2Tension release packer for a bottomhole assemblyANGMAN PER·Filed 2016·Granted Nov 12, 2019·2 cites·32 claims
- 2875US7942199B2Method for installing wellbore string devicesTESCO CORP·Filed 2008·Granted May 17, 2011·13 cites·18 claims
- 2975US7784551B2Tubular handling deviceTESCO CORP·Filed 2008·Granted Aug 31, 2010·15 cites·21 claims
- 3074US11480030B2Thermal expansion actuation system for sleeve shiftingKOBOLD CORP·Filed 2019·Granted Oct 25, 2022·2 cites·13 claims
- 3173US11365606B2Downhole sleeve assembly and sleeve actuator thereforKOBOLD CORP·Filed 2019·Granted Jun 21, 2022·1 cites·11 claims
- 3273US7757764B2Method for drilling and casing a wellbore with a pump down cement floatTESCO CORP·Filed 2007·Granted Jul 20, 2010·10 cites·12 claims
- 3373US7484559B2Method for drilling and casing a wellbore with a pump down cement floatTESCO CORP·Filed 2007·Granted Feb 3, 2009·10 cites·11 claims
- 3472US7219727B2Wear resistant tubular connectionTESCO CORP·Filed 2002·Granted May 22, 2007·29 cites·37 claims
- 3571US10605061B2Bottom hole assembly for wellbore completionKOBOLD SERVICES INC·Filed 2018·Granted Mar 31, 2020·1 cites·14 claims
- 3670US7654313B2Method and assembly for casing handling using a kelly rigTESCO CORP·Filed 2007·Granted Feb 2, 2010·11 cites·14 claims
- 3770US7287584B2Anchoring device for a wellbore toolTESCO CORP·Filed 2003·Granted Oct 30, 2007·25 cites·18 claims
- 3870US6585052B2Casing centralizerTESCO CORP·Filed 2002·Granted Jul 1, 2003·30 cites·4 claims
- 3967US7140455B2Valve method for drilling with casing using pressurized drilling fluidTESCO CORP·Filed 2004·Granted Nov 28, 2006·30 cites·38 claims
- 4065US7814972B2Wireline entry subTESCO CORP·Filed 2008·Granted Oct 19, 2010·8 cites·18 claims
- 4165US7472763B2Wear resistant tubular connectionTESCO CORP·Filed 2006·Granted Jan 6, 2009·6 cites·17 claims
- 4265US5755289ADrilling rig elevator with replaceable clamping inserts and method for installationTESCO CORP·Filed 1996·Granted May 26, 1998·57 cites·14 claims
- 4363US10000978B2Tubular centralizerANGMAN PER·Filed 2013·Granted Jun 19, 2018·2 cites·15 claims
- 4463US2019203576A1Extendable/collapsible apparatus for fracture imaging and use of sameKOBOLD CORP·Filed 2019·Application pending·0 cites
- 4561US10961808B2Tension release packer for a bottomhole assembly and methods of useKOBOLD CORP·Filed 2019·Granted Mar 30, 2021·0 cites·16 claims
- 4659US7090004B2Cement floatTESCO CORP·Filed 2004·Granted Aug 15, 2006·20 cites·9 claims
- 4758US8192127B2Tubular handling system for drilling rigsANGMAN PER·Filed 2008·Granted Jun 5, 2012·5 cites·15 claims
- 4858US7770635B2Wellbore tubular handling torque multiplierTESCO CORP·Filed 2005·Granted Aug 10, 2010·5 cites·19 claims
- 4958US7637330B2Casing bottom hole assembly retrieval processTESCO CORP·Filed 2006·Granted Dec 29, 2009·5 cites·21 claims
- 5058US7575061B2Wireline entry sub and method of usingTESCO CORP·Filed 2006·Granted Aug 18, 2009·5 cites·8 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
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