DB

Daniel Ralph Barnhart

VG Vetco Gray: 6 patents #32 of 364Top 9%
Overall (All Time): #820,867 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10900316 Wellhead seal with pressure energizing from below David L. Ford, Joseph W. Pallini, Thomas A. Fraser, Daniel Caleb Benson 2021-01-26
10138698 External locking mechanism for seal energizing ring David L. Ford 2018-11-27
9797215 Ratcheted E-ring retention device David L. Ford, Daniel Caleb Benson 2017-10-24
9376881 High-capacity single-trip lockdown bushing and a method to operate the same Nicholas P. Gette, Carl F. Boehm, Jr. 2016-06-28
9115561 Load enhanced locking arrangement Nicholas P. Gette, David L. Ford 2015-08-25
9057231 Energizing ring divot back-out lock Nicholas P. Gette, Baozhi Zhu, Jeffrey Allen Raynal 2015-06-16