DD

Douglas Derr

HS Halliburton Energy Services: 2 patents #2,138 of 4,711Top 50%
📍 Diemelstraße, TX: #493 of 1,115 inventorsTop 45%
🗺 Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #1,889,283 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11136857 Rapid response well control assembly Carl J. Cramm, Andrew John Cuthbert 2021-10-05
8997879 Diverter spool and methods of using the same Patrick M. Ljungdahl 2015-04-07