Assignee
BALLARD DAVID ANTONY
GB·5 granted patents·1 pending application·36 citations·filing 2007–2012
Technology mixC09K6
Top patents by PatentIndex Score
6 records- 0191US8598096B2Precipitated weighting agents for use in wellbore fluidsBALLARD DAVID ANTONY·Filed 2012·Granted Dec 3, 2013·8 cites·32 claims
- 0291US8168569B2Precipitated weighting agents for use in wellbore fluidsBALLARD DAVID ANTONY·Filed 2007·Granted May 1, 2012·16 cites·7 claims
- 0384US8474532B2Invert silicate fluids for wellbore strengtheningBALLARD DAVID ANTONY·Filed 2008·Granted Jul 2, 2013·10 cites·12 claims
- 0466US8876437B2Use of elastomers to produce gels for treating a wellboreBALLARD DAVID ANTONY·Filed 2008·Granted Nov 4, 2014·2 cites·11 claims
- 0546US8178475B2Surfactant materials and coatings for weighting agents for use in oil based drilling fluidsBALLARD DAVID ANTONY·Filed 2007·Granted May 15, 2012·0 cites·14 claims
- 0639US2012061083A1Wellbore fluid and methods of treating an earthen formationBALLARD DAVID ANTONY·Filed 2010·Application pending·0 cites
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