DH

David Hillis

WE Weatherford/Lamb: 6 patents #122 of 852Top 15%
📍 Balmedie, GB: #4 of 8 inventorsTop 50%
Overall (All Time): #870,805 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7575060 Collapse resistance of tubing Paul David Metcalfe, Simon J. Harrall 2009-08-18
7395857 Methods and apparatus for expanding tubing with an expansion tool and a cone 2008-07-08
7367389 Tubing expansion Andrew Duggan, Simon J. Harrall, Paul David Metcalfe, Wayne Rudd 2008-05-06
7308944 Expander tool for use in a wellbore Gary Johnston, Wayne Rudd, Gary Pendleton, Kevin Scott 2007-12-18
7255177 Tubing expansion Andrew Duggan, Simon J. Harrall, Paul David Metcalfe, Wayne Rudd 2007-08-14
7017669 Methods and apparatus for expanding tubulars Gary Johnston, Ian Cameron 2006-03-28