Assignee
COUPLER DEVELOPMENTS LTD
GB·10 granted patents·574 citations·filing 1997–2007
Technology mixE21B10
Top patents by PatentIndex Score
10 records- 0195US6688394B1Drilling methods and apparatusCOUPLER DEVELOPMENTS LTD·Filed 2000·Granted Feb 10, 2004·192 cites·43 claims
- 0291US6315051B1Continuous circulation drilling methodCOUPLER DEVELOPMENTS LTD·Filed 1997·Granted Nov 13, 2001·135 cites·48 claims
- 0388US6739397B2Continuous circulation drilling methodCOUPLER DEVELOPMENTS LTD·Filed 2001·Granted May 25, 2004·68 cites·9 claims
- 0483US7584796B2Drilling rigCOUPLER DEVELOPMENTS LTD·Filed 2007·Granted Sep 8, 2009·22 cites·8 claims
- 0578US6591916B1Drilling methodCOUPLER DEVELOPMENTS LTD·Filed 1999·Granted Jul 15, 2003·64 cites·20 claims
- 0669US7252151B2Drilling methodCOUPLER DEVELOPMENTS LTD·Filed 2003·Granted Aug 7, 2007·27 cites·33 claims
- 0768US7395855B2Radially moving slipsCOUPLER DEVELOPMENTS LTD·Filed 2003·Granted Jul 8, 2008·33 cites·20 claims
- 0860US7188683B2Drilling methodCOUPLER DEVELOPMENTS LTD·Filed 2004·Granted Mar 13, 2007·17 cites·15 claims
- 0947US7322418B2Continuous circulation drilling methodCOUPLER DEVELOPMENTS LTD·Filed 2004·Granted Jan 29, 2008·7 cites·12 claims
- 1046US7252161B2Method and apparatus with slips assembly for coupling tubulars without interruption of circulationCOUPLER DEVELOPMENTS LTD·Filed 2002·Granted Aug 7, 2007·9 cites·27 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →