DB

Doug Brunskill

NM Ncs Multistage: 4 patents #17 of 44Top 40%
BS Bj Services: 2 patents #74 of 250Top 30%
Overall (All Time): #686,058 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12371969 Downhole flow controller Stanley Mberia 2025-07-29
12006803 Systems and methods for producing hydrocarbon material from unconsolidated formations Rio WHYTE, Kurt Cooper, David WAGES 2024-06-11
11867025 Downhole flow controller Stanley Mberia 2024-01-09
10180046 Downhole flow control apparatus with screen Michael WERRIES, John Ravensbergen, Don Getzlaf, Nick GETZLAF 2019-01-15
9970262 Downhole valve apparatus Michael WERRIES, John Ravensbergen, Don Getzlaf 2018-05-15
7410003 Dual purpose blow out preventer John Ravensbergen 2008-08-12
7086486 Flow control valve and method of controlling rotation in a downhole tool John Ravensbergen, Don Pike 2006-08-08