Inventor · disambiguated record
Paul Howlett
Also filed as: HOWLETT PAUL · HOWLETT PAUL DAVID
38 granted patents·2 pending applications·1,600 citations·filing 1998–2018
98Inventor score
Top patents by PatentIndex Score
40 records- 0198US6253861B1Circulation toolSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted Jul 3, 2001·337 cites·15 claims
- 0294US6220357B1Downhole flow control toolSPECIALISED PETROLEUM SERV LTD·Filed 1998·Granted Apr 24, 2001·197 cites·7 claims
- 0391US8511392B2Downhole swivel subHOWLETT PAUL·Filed 2012·Granted Aug 20, 2013·16 cites·26 claims
- 0490US6655462B1Magnetic well cleaning apparatusSPS AFOS INTERNAT LTD·Filed 2000·Granted Dec 2, 2003·119 cites·11 claims
- 0586US6609569B2Downhole fluid samplerSPS AFOS GROUP LTD·Filed 2001·Granted Aug 26, 2003·77 cites·13 claims
- 0685US6250387B1Apparatus for catching debris in a well-boreSPS AFOS GROUP LTD·Filed 1999·Granted Jun 26, 2001·102 cites·12 claims
- 0781US6152221AApparatus with retractable cleaning membersSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted Nov 28, 2000·84 cites·5 claims
- 0879US7322408B2Downhole tool with actuable barrierSPECIALISED PETROLEUM SERV LTD·Filed 2003·Granted Jan 29, 2008·51 cites·19 claims
- 0978US6453996B1Apparatus incorporating jet pump for well head cleaningSPS AFOS GROUP LTD·Filed 2000·Granted Sep 24, 2002·52 cites·12 claims
- 1076US6102060ADetachable locking device for a control valve and methodSPECIALISED PETROLEUM SERV LTD·Filed 1998·Granted Aug 15, 2000·70 cites·18 claims
- 1175US9115546B2Drill pipe tubing and casing protectorHOWLETT PAUL·Filed 2011·Granted Aug 25, 2015·5 cites·17 claims
- 1275US6152220ADown-hole tool with centralising componentSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted Nov 28, 2000·64 cites·19 claims
- 1374US7096950B2Combined milling and scraping toolSPECIALISED PETROLEUM SERV LTD·Filed 2001·Granted Aug 29, 2006·41 cites·16 claims
- 1473US6227291B1Compact well clean up tool with multifunction cleaning apparatusSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted May 8, 2001·60 cites·5 claims
- 1571US8191639B2Downhole swivel subHOWLETT PAUL·Filed 2006·Granted Jun 5, 2012·11 cites·5 claims
- 1669US6401813B1Wellhead cleanup toolSPS AFOS GROUP LTD·Filed 2000·Granted Jun 11, 2002·34 cites·14 claims
- 1768US7413023B2Wellhead seal unitSPECIALISED PETROLEUM SERV LTD·Filed 2003·Granted Aug 19, 2008·25 cites·11 claims
- 1865US6896064B2Compression set packer and method of useSPECIALISED PETROLEUM SERV LTD·Filed 2001·Granted May 24, 2005·28 cites·12 claims
- 1965US6530429B2Downhole cleaning tool with shear clutchSPS AFOS GROUP LTD·Filed 2001·Granted Mar 11, 2003·28 cites·14 claims
- 2065US6454009B2Apparatus and method for cleaning well risersFiled 2001·Granted Sep 24, 2002·28 cites·9 claims
- 2162US7757771B2Wellhead seal unitSPECIALISED PETROLEUM SERV LTD·Filed 2007·Granted Jul 20, 2010·5 cites·3 claims
- 2259US7866391B2Shoe for wellbore lining tubingCALEDUS LTD·Filed 2006·Granted Jan 11, 2011·6 cites·37 claims
- 2359US6497295B1Torque limiting toolSPECIALISED PETROLEUM SERV LTD·Filed 2000·Granted Dec 24, 2002·21 cites·13 claims
- 2456US7740073B2Wellhead seal unitSPECIALISED PETROLEUM SERV LTD·Filed 2007·Granted Jun 22, 2010·3 cites·2 claims
- 2555US7686089B2Hanging apparatus and methodCALEDUS LTD·Filed 2005·Granted Mar 30, 2010·6 cites·29 claims
- 2655US7055605B2Downhole circulation valve operated by dropping ballsSPECIALISED PETROLEUM SERV LTD·Filed 2002·Granted Jun 6, 2006·17 cites·15 claims
- 2752US6302214B1Apparatus and method for inflating packers in a drilling wellSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted Oct 16, 2001·27 cites·28 claims
- 2852US6279657B1Apparatus and method for circulating fluid in a well boreSPECIALISED PETROLEUM SERV LTD·Filed 1998·Granted Aug 28, 2001·28 cites·8 claims
- 2949US7191835B2Disengagable burr millSPECIALISED PETROLEUM SERV LTD·Filed 2002·Granted Mar 20, 2007·10 cites·14 claims
- 3048US8661877B2Apparatus and method for testing float equipmentHOWLETT PAUL·Filed 2012·Granted Mar 4, 2014·0 cites·27 claims
- 3148US6343648B1Down-hole tool with detachable cleaning padsSPECIALISED PETROLEUM SERV LTD·Filed 1999·Granted Feb 5, 2002·23 cites·14 claims
- 3247US7237617B2Disengageable downhole toolSPECIALISED PETROLEUM SERV LTD·Filed 2003·Granted Jul 3, 2007·9 cites·21 claims
- 3344US11401769B2Head apparatusSUDELAC LTD·Filed 2018·Granted Aug 2, 2022·0 cites·22 claims
- 3443US11401764B2Downhole swivel toolSUDELAC LTD·Filed 2017·Granted Aug 2, 2022·0 cites·24 claims
- 3542US7228910B2Safety mechanism for weight-set downhole toolSPECIALISED PETROLEUM SERV LTD·Filed 2002·Granted Jun 12, 2007·4 cites·31 claims
- 3638US2010270018A1Fishing toolHOWLETT PAUL·Filed 2010·Application pending·0 cites
- 3735US7152686B2Downhole weight bearing apparatus and methodSPECIALISED PETROLEUM SERV LTD·Filed 2002·Granted Dec 26, 2006·0 cites·13 claims
- 3834US2001017210A1Liner setting toolFiled 2001·Application pending·0 cites
- 3933US8342251B2Shoe for wellbore lining tubingTERCEL OILFIELD PRODUCTS UK LTD·Filed 2008·Granted Jan 1, 2013·0 cites·20 claims
- 4033US6347667B1Well clean-up tool with improved cleaning memberSPECIALIZED PETROLEUM SERVICES·Filed 1999·Granted Feb 19, 2002·12 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →