Assignee
VARCO I P
US·8 granted patents·199 citations·filing 2001–2007
Top patents by PatentIndex Score
8 records- 0195US7523644B2Method and apparatus for verifying the integrity of a joint sealVARCO I P·Filed 2005·Granted Apr 28, 2009·38 cites·5 claims
- 0290US7980392B2Shale shaker screens with aligned wiresVARCO I P·Filed 2007·Granted Jul 19, 2011·38 cites·17 claims
- 0381US7270190B2Variable size coil tubing gripping elementsVARCO I P·Filed 2005·Granted Sep 18, 2007·23 cites·6 claims
- 0476US7401664B2Top drive systemsVARCO I P·Filed 2006·Granted Jul 22, 2008·16 cites·20 claims
- 0563US6862099B2Tubular ovality testingVARCO I P·Filed 2002·Granted Mar 1, 2005·14 cites·40 claims
- 0660US7261155B1Cable side-entry sub with grease injection flow tubesVARCO I P·Filed 2004·Granted Aug 28, 2007·24 cites·18 claims
- 0759US6742597B2Safety check valve for coiled tubingVARCO I P·Filed 2002·Granted Jun 1, 2004·22 cites·11 claims
- 0853US6497278B1Circulation control deviceVARCO I P·Filed 2001·Granted Dec 24, 2002·24 cites·7 claims
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