Assignee
TDW DELAWARE INC
US·108 granted patents·18 pending applications·1,770 citations·filing 1988–2025
Top patents by PatentIndex Score
126 records- 0197US6286553B1Removable closure systemTDW DELAWARE INC·Filed 2001·Granted Sep 11, 2001·80 cites·20 claims
- 0294US5460046AMethod and apparatus for ultrasonic pipeline inspectionTDW DELAWARE INC·Filed 1994·Granted Oct 24, 1995·125 cites·8 claims
- 0391US12338934B2Activation system for pipeline plugTDW DELAWARE INC·Filed 2022·Granted Jun 24, 2025·2 cites·19 claims
- 0491US7546847B2Locking plug for closing the sidewall of a pipeTDW DELAWARE INC·Filed 2006·Granted Jun 16, 2009·25 cites·8 claims
- 0590US10801658B2Directed jet impulse pig launching system and method of its useTDW DELAWARE INC·Filed 2018·Granted Oct 13, 2020·5 cites·19 claims
- 0689US7861665B2Pipeline pig signal with adjustable mountingTDW DELAWARE INC·Filed 2008·Granted Jan 4, 2011·12 cites·8 claims
- 0789US7841364B2Double block and bleed plugTDW DELAWARE INC·Filed 2007·Granted Nov 30, 2010·23 cites·8 claims
- 0889US7352463B2Method and device for detecting gases by absorption spectroscopyTDW DELAWARE INC·Filed 2002·Granted Apr 1, 2008·63 cites·22 claims
- 0989US6847207B1ID-OD discrimination sensor concept for a magnetic flux leakage inspection toolTDW DELAWARE INC·Filed 2004·Granted Jan 25, 2005·98 cites·16 claims
- 1088US7900655B2Composite load transferring techniqueTDW DELAWARE INC·Filed 2008·Granted Mar 8, 2011·26 cites·19 claims
- 1188US5612499AMethod of inserting a sensor into a pipelineTDW DELAWARE INC·Filed 1995·Granted Mar 18, 1997·81 cites·12 claims
- 1286US10989347B2Isolation plug with energized sealTDW DELAWARE INC·Filed 2019·Granted Apr 27, 2021·6 cites·15 claims
- 1386US10094479B2Device for sealing pipelinesTDW DELAWARE INC·Filed 2017·Granted Oct 9, 2018·6 cites·16 claims
- 1486US9746088B2Device for sealing pipelinesTDW DELAWARE INC·Filed 2015·Granted Aug 29, 2017·7 cites·13 claims
- 1586US7827646B2Vortex inhibitor dispersal pigTDW DELAWARE INC·Filed 2008·Granted Nov 9, 2010·20 cites·17 claims
- 1685US10436372B2Large-gap-seal (“LGS”) assemblyTDW DELAWARE INC·Filed 2017·Granted Oct 8, 2019·10 cites·30 claims
- 1785US8047219B2Block and bleed plugging tool employing seals on a pipeline exteriorTDW DELAWARE INC·Filed 2009·Granted Nov 1, 2011·17 cites·25 claims
- 1884US9651190B1System and method of preventing flow blocking when using an automated pig launcherTDW DELAWARE INC·Filed 2016·Granted May 16, 2017·10 cites·7 claims
- 1984US7353839B2High temperature completion plugTDW DELAWARE INC·Filed 2005·Granted Apr 8, 2008·15 cites·14 claims
- 2084US5384929APig for use in cleaning the interior wall of a pipelineTDW DELAWARE INC·Filed 1994·Granted Jan 31, 1995·46 cites·6 claims
- 2183US7673655B1Composite wrap repair of internal defectsTDW DELAWARE INC·Filed 2008·Granted Mar 9, 2010·16 cites·23 claims
- 2283US5450765AApparatus for providing signal communication between the interior and exterior of a pipelineTDW DELAWARE INC·Filed 1994·Granted Sep 19, 1995·72 cites·4 claims
- 2382US12359762B2Pipeline isolation tool with large-gap sealing element having mini pressure heads and iris-like structural sealing elementsTDW DELAWARE INC·Filed 2022·Granted Jul 15, 2025·2 cites·38 claims
- 2480US7475591B2Methods and systems for hydrostatic testing a pipelineTDW DELAWARE INC·Filed 2005·Granted Jan 13, 2009·13 cites·41 claims
- 2580US7270139B2Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging toolTDW DELAWARE INC·Filed 2005·Granted Sep 18, 2007·17 cites·8 claims
- 2679US5417112AApparatus for indicating the passage of a pig moving within an underground pipelineTDW DELAWARE INC·Filed 1993·Granted May 23, 1995·54 cites·21 claims
- 2778US7766047B1Telescoping double blocking pipe plugTDW DELAWARE INC·Filed 2009·Granted Aug 3, 2010·9 cites·15 claims
- 2877US8052801B2Pipeline pig launch pin and retraction systemTDW DELAWARE INC·Filed 2009·Granted Nov 8, 2011·10 cites·6 claims
- 2977US8001988B2Verifiable closing and locking system of a cylindrical passagewayTDW DELAWARE INC·Filed 2008·Granted Aug 23, 2011·13 cites·16 claims
- 3077US7699564B2Self-contained keyhold weld fitting and method of useTDW DELAWARE INC·Filed 2007·Granted Apr 20, 2010·9 cites·10 claims
- 3176US12292151B2Gripper assembly for pipeline isolation tool and methods of useTDW DELAWARE INC·Filed 2023·Granted May 6, 2025·0 cites·17 claims
- 3276US11796114B2Isolation plug with energized sealTDW DELAWARE INC·Filed 2021·Granted Oct 24, 2023·1 cites·24 claims
- 3376US7316176B2Remote monitor system for a longitudinally positionable control barTDW DELAWARE INC·Filed 2005·Granted Jan 8, 2008·12 cites·7 claims
- 3476US7311114B2Cross-line plugging systemTDW DELAWARE INC·Filed 2005·Granted Dec 25, 2007·8 cites·8 claims
- 3576US5466099ACutter shell for forming holes of improved cylindricalityTDW DELAWARE INC·Filed 1994·Granted Nov 14, 1995·35 cites·10 claims
- 3676US5360300ACutter shellTDW DELAWARE INC·Filed 1993·Granted Nov 1, 1994·38 cites·1 claims
- 3775US11873938B2Pressure-responsive, deformable, self-integrating pigging element for use in pipeline pigging applicationsTDW DELAWARE INC·Filed 2021·Granted Jan 16, 2024·1 cites·22 claims
- 3875US10774970B2Shaft mechanical lock for pipeline isolation toolsTDW DELAWARE INC·Filed 2018·Granted Sep 15, 2020·4 cites·20 claims
- 3975US5295279ACup for use on a pipelineTDW DELAWARE INC·Filed 1993·Granted Mar 22, 1994·33 cites·18 claims
- 4074US5843271APlastic pipe butt fusion machine and cart assemblyTDW DELAWARE INC·Filed 1997·Granted Dec 1, 1998·39 cites·10 claims
- 4174US5464496APlastic pipe butt fusion machineTDW DELAWARE INC·Filed 1994·Granted Nov 7, 1995·40 cites·3 claims
- 4274US4984322AElastomeric disc for use on a pipeline pigTDW DELAWARE INC·Filed 1989·Granted Jan 15, 1991·27 cites·1 claims
- 4373US12092255B2Seal assembly for pipeline isolation tool and methods of useTDW DELAWARE INC·Filed 2023·Granted Sep 17, 2024·0 cites·30 claims
- 4473US5439331AHigh pressure tapping apparatusTDW DELAWARE INC·Filed 1994·Granted Aug 8, 1995·42 cites·4 claims
- 4573US2023096829A1Pipeline Tool with Composite Magnetic Field for Inline InspectionTDW DELAWARE INC·Filed 2022·Application pending·0 cites
- 4672US12264767B2Polyethylene pipe service system including quick connect means for polyethylene pipe tapping, plugging, and completion operationsTDW DELAWARE INC·Filed 2023·Granted Apr 1, 2025·0 cites·20 claims
- 4772US11719341B2Vessel closure device with fail safe failure detection meansTDW DELAWARE INC·Filed 2019·Granted Aug 8, 2023·2 cites·8 claims
- 4872US11686408B2Non-invasive pipeline pig signal using vibration sensorsTDW DELAWARE INC·Filed 2021·Granted Jun 27, 2023·0 cites·15 claims
- 4971US6116285ARemovable threaded plugTDW DELAWARE INC·Filed 1998·Granted Sep 12, 2000·38 cites·20 claims
- 5071US2025369551A1Pipeline isolation tool with large-gap sealing element having mini pressure heads and iris-like structural sealing elementsTDW DELAWARE INC·Filed 2025·Application pending·0 cites
Showing the top 50 of 126 patent records by PatentIndex Score.
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