CC

Charles D. Calkins

TD Tdw Delaware: 2 patents #44 of 133Top 35%
📍 Tulsa, OK: #479 of 2,344 inventorsTop 25%
🗺 Oklahoma: #2,630 of 12,736 inventorsTop 25%
Overall (All Time): #1,250,861 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7353839 High temperature completion plug Jack E. Miller 2008-04-08
7281543 Apparatus, systems and methods for plugging a high temperature pipe Eric N. Freeman, Tony R. Garrison, Gary Goins, Phillip K. Morrison, Gregory L. Puckett +3 more 2007-10-16
7270139 Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging tool Harvey A. Ugland, Buddy A. Wilson 2007-09-18
6648562 Apparatus for tapping a hole in a pipeline Jerry Lee Dunn, David Albertson, Richard L. Goswick, Matthew W. James 2003-11-18