Inventor · disambiguated record
David L. Ervin
Also filed as: ERVIN DAVID L
3 granted patents·14 citations·filing 2010–2014
61Inventor score
Technology areasE21B
Top patents by PatentIndex Score
3 records- 0184US8820437B2Cementing whipstock apparatus and methodsERVIN DAVID L·Filed 2011·Granted Sep 2, 2014·12 cites·44 claims
- 0252US9151136B2Cementing whipstock apparatus and methodsSMITH INTERNATIONAL·Filed 2014·Granted Oct 6, 2015·1 cites·20 claims
- 0348US8590623B2Downhole tools and methods of setting in a wellboreERVIN DAVID L·Filed 2010·Granted Nov 26, 2013·1 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →