Inventor · disambiguated record
Charles H. S. Douglas, Iii
Also filed as: DOUGLAS III CHARLES H S
3 granted patents·69 citations·filing 2007–2020
69Inventor score
Technology areasE21B
Top patents by PatentIndex Score
3 records- 0192US7703557B2Fixed cutter bit with backup cutter elements on primary bladesSMITH INTERNATIONAL·Filed 2007·Granted Apr 27, 2010·61 cites·49 claims
- 0277US8869919B2Drag bit with utility bladesSHEN YUELIN·Filed 2011·Granted Oct 28, 2014·6 cites·23 claims
- 0373US12385325B2Drill bit with auxiliary channel openingsULTERRA DRILLING TECH LP·Filed 2020·Granted Aug 12, 2025·2 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →