Inventor · disambiguated record
Charles D. Calkins
Also filed as: CALKINS CHARLES D
4 granted patents·124 citations·filing 2001–2005
80Inventor score
Top patents by PatentIndex Score
4 records- 0187US6648562B1Apparatus for tapping a hole in a pipelineFiled 2001·Granted Nov 18, 2003·62 cites·19 claims
- 0284US7353839B2High temperature completion plugTDW DELAWARE INC·Filed 2005·Granted Apr 8, 2008·15 cites·14 claims
- 0380US7270139B2Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging toolTDW DELAWARE INC·Filed 2005·Granted Sep 18, 2007·17 cites·8 claims
- 0479US7281543B2Apparatus, systems and methods for plugging a high temperature pipeCALKINS CHARLES D·Filed 2004·Granted Oct 16, 2007·30 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →