DJ

D. Peter Johnson

Schlumberger Technology: 2 patents #2,609 of 7,293Top 40%
Overall (All Time): #1,824,434 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11795781 Actuation valve system with pilot and main valves Edward George Parkin, Michael Pearce, Julien Steimetz, Jonathan Marshall, Clint William Philbrick 2023-10-24
10947814 Pilot controlled actuation valve system Edward George Parkin, Michael Pearce, Julien Steimetz, Jonathan Marshall, Clint William Philbrick 2021-03-16