Inventor
JAHNKE DOUGLAS A
US9 patents
⚠️ This page may combine multiple inventors who share the name “JAHNKE DOUGLAS A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT OILWELL VARCO LP
6 patentsUS9169710B2Oct 27, 2015
Wellsite connector with piston driven collets and method of using same
NAT OILWELL VARCO LP23 citations90
US9869148B2Jan 16, 2018
Wellsite connector with floating seal member and method of using same
NAT OILWELL VARCO LP4 citations71
US9169712B2Oct 27, 2015
Blowout preventer locking door assembly and method of using same
NAT OILWELL VARCO LP4 citations71
US9169713B2Oct 27, 2015
Blowout preventer with locking ram assembly and method of using same
NAT OILWELL VARCO LP5 citations71
US9175541B2Nov 3, 2015
Blowout preventer seal assembly and method of using same
NAT OILWELL VARCO LP2 citations60
USRE47771EDec 17, 2019
Blowout preventer with locking ram assembly and method of using same
NAT OILWELL VARCO LP0 citations50