DH

Douglas A. Hunter

CT Canrig Drilling Technology: 5 patents #1 of 10Top 10%
📍 Calgary, CA: #8 of 392 inventorsTop 3%
Overall (2011): #18,156 of 364,097Top 5%
5
Patents 2011

Issued Patents 2011

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8074537 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 2011-12-13
8042432 Oilfield tubular torque wrench Martin Thieme, Friedhold Brost 2011-10-25
8033779 Pipe handling apparatus and methods Andrew Gerber 2011-10-11
8016536 Pipe-handling apparatus and methods Andrew Gerber 2011-09-13
7958787 Oilfield tubular torque wrench 2011-06-14