Inventor
HOPMANN MARK E
US19 patents
⚠️ This page may combine multiple inventors who share the name “HOPMANN MARK E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
16 patentsUS6334486B1Jan 1, 2002
Downhole flow control devices
BAKER HUGHES INC113 citations99
US5906238AMay 25, 1999
Downhole flow control devices
BAKER HUGHES INC134 citations99
US5316084AMay 31, 1994
Well tool with sealing means
BAKER HUGHES INC109 citations98
US5309993AMay 10, 1994
Chevron seal for a well tool
BAKER HUGHES INC113 citations98
US6612547B2Sep 2, 2003
Downhole flow control devices
BAKER HUGHES INC39 citations96
US6484800B2Nov 26, 2002
Downhole flow control devices
BAKER HUGHES INC68 citations96
US6041857AMar 28, 2000
Motor drive actuator for downhole flow control devices
BAKER HUGHES INC140 citations96
US5832996ANov 10, 1998
Electro hydraulic downhole control device
BAKER HUGHES INC82 citations96
US4928772AMay 29, 1990
Method and apparatus for shifting a ported member using continuous tubing
BAKER HUGHES INC111 citations96
US5156220AOct 20, 1992
Well tool with sealing means
BAKER HUGHES INC100 citations95
US6450255B2Sep 17, 2002
Downhole flow control devices
BAKER HUGHES INC21 citations92
US6260616B1Jul 17, 2001
Downhole flow control devices
BAKER HUGHES INC27 citations92
US4949791AAug 21, 1990
Method and apparatus for securing and releasing continuous tubing in a subterranean well
BAKER HUGHES INC27 citations92
US4917191AApr 17, 1990
Method and apparatus for selectively shifting a tool member
BAKER HUGHES INC53 citations92
US4909325AMar 20, 1990
Horizontal well turbulizer and method
BAKER HUGHES INC55 citations92
US4923012AMay 8, 1990
Safety valve for horizontal completions of subterranean wells
BAKER HUGHES INC10 citations74