Assignee
DEBOER LUC
US·5 granted patents·1 pending application·181 citations·filing 2003–2016
Technology mixE21B6
Top patents by PatentIndex Score
6 records- 0188US8844653B2Continuous circulating sub for drill stringsDEBOER LUC·Filed 2011·Granted Sep 30, 2014·14 cites·31 claims
- 0282US7090036B2System for drilling oil and gas wells by varying the density of drilling fluids to achieve near-balanced, underbalanced, or overbalanced drilling conditionsDEBOER LUC·Filed 2003·Granted Aug 15, 2006·66 cites·6 claims
- 0381US8534369B2Drill string flow control valve and methods of useDEBOER LUC·Filed 2011·Granted Sep 17, 2013·8 cites·45 claims
- 0480US7093662B2System for drilling oil and gas wells using a concentric drill string to deliver a dual density mudDEBOER LUC·Filed 2003·Granted Aug 22, 2006·62 cites·30 claims
- 0565US6966392B2Method for varying the density of drilling fluids in deep water oil and gas drilling applicationsDEBOER LUC·Filed 2003·Granted Nov 22, 2005·31 cites·27 claims
- 0638US2017058632A1Riserless well systems and methodsDEBOER LUC·Filed 2016·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →