Inventor
BEALL CLIFFORD H
US22 patents
⚠️ This page may combine multiple inventors who share the name “BEALL CLIFFORD H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAKER HUGHES INC
17 patentsUS6283477B1Sep 4, 2001
Annular chamber seal
BAKER HUGHES INC44 citations96
US6260850B1Jul 17, 2001
Annular chamber seal
BAKER HUGHES INC65 citations96
US6109351AAug 29, 2000
Failsafe control system for a subsurface safety valve
BAKER HUGHES INC80 citations96
US5799949ASep 1, 1998
Annular chamber seal
BAKER HUGHES INC48 citations96
US5496044AMar 5, 1996
Annular chamber seal
BAKER HUGHES INC54 citations96
US6427778B1Aug 6, 2002
Control system for deep set subsurface valves
BAKER HUGHES INC64 citations94
US5682921ANov 4, 1997
Undulating transverse interface for curved flapper seal
BAKER HUGHES INC46 citations94
US7810571B2Oct 12, 2010
Downhole lubricator valve
BAKER HUGHES INC17 citations92
US5918858AJul 6, 1999
Undulating transverse interface for curved flapper seal
BAKER HUGHES INC28 citations91
US7905292B2Mar 15, 2011
Pressure equalization device for downhole tools
BAKER HUGHES INC9 citations83
US7699108B2Apr 20, 2010
Distortion compensation for rod piston bore in subsurface safety valves
BAKER HUGHES INC8 citations83
US7637324B2Dec 29, 2009
Isolation valve for subsurface safety valve line
BAKER HUGHES INC18 citations83
US7552774B2Jun 30, 2009
Control line hydrostatic minimally sensitive control system
BAKER HUGHES INC13 citations82
US7694742B2Apr 13, 2010
Downhole hydraulic control system with failsafe features
BAKER HUGHES INC16 citations81
US8024847B2Sep 27, 2011
Method of manufacturing a downhole lubricator valve
BAKER HUGHES INC2 citations63
US7735560B2Jun 15, 2010
Distortion compensation for rod piston bore in subsurface safety valves
BAKER HUGHES INC4 citations62
US9719326B2Aug 1, 2017
Switch between redundant control systems for a subsurface safety valve
BAKER HUGHES INC0 citations38