Inventor · disambiguated record
Clifford H. Beall
Also filed as: BEALL CLIFFORD H
22 granted patents·2 pending applications·665 citations·filing 1980–2013
97Inventor score
Top patents by PatentIndex Score
24 records- 0190US7810571B2Downhole lubricator valveBAKER HUGHES INC·Filed 2006·Granted Oct 12, 2010·17 cites·13 claims
- 0285US4311196ATangentially loaded slip assemblyBAKER INT CORP·Filed 1980·Granted Jan 19, 1982·66 cites·33 claims
- 0382US6427778B1Control system for deep set subsurface valvesBAKER HUGHES INC·Filed 2000·Granted Aug 6, 2002·64 cites·20 claims
- 0482US6260850B1Annular chamber sealBAKER HUGHES INC·Filed 1997·Granted Jul 17, 2001·65 cites·20 claims
- 0581US6283477B1Annular chamber sealBAKER HUGHES INC·Filed 2000·Granted Sep 4, 2001·44 cites·4 claims
- 0680US5496044AAnnular chamber sealBAKER HUGHES INC·Filed 1993·Granted Mar 5, 1996·54 cites·10 claims
- 0780US4423777AFluid pressure actuated well toolBAKER INT CORP·Filed 1981·Granted Jan 3, 1984·54 cites·26 claims
- 0879US6109351AFailsafe control system for a subsurface safety valveBAKER HUGHES INC·Filed 1998·Granted Aug 29, 2000·80 cites·21 claims
- 0978US7637324B2Isolation valve for subsurface safety valve lineBAKER HUGHES INC·Filed 2007·Granted Dec 29, 2009·18 cites·19 claims
- 1075US7694742B2Downhole hydraulic control system with failsafe featuresBAKER HUGHES INC·Filed 2006·Granted Apr 13, 2010·16 cites·29 claims
- 1173US5918858AUndulating transverse interface for curved flapper sealBAKER HUGHES INC·Filed 1997·Granted Jul 6, 1999·28 cites·5 claims
- 1273US5799949AAnnular chamber sealBAKER HUGHES INC·Filed 1997·Granted Sep 1, 1998·48 cites·17 claims
- 1372US7552774B2Control line hydrostatic minimally sensitive control systemBAKER HUGHES INC·Filed 2006·Granted Jun 30, 2009·13 cites·20 claims
- 1468US8024847B2Method of manufacturing a downhole lubricator valveBAKER HUGHES INC·Filed 2010·Granted Sep 27, 2011·2 cites·4 claims
- 1567US7699108B2Distortion compensation for rod piston bore in subsurface safety valvesBAKER HUGHES INC·Filed 2006·Granted Apr 20, 2010·8 cites·13 claims
- 1666US7905292B2Pressure equalization device for downhole toolsBAKER HUGHES INC·Filed 2009·Granted Mar 15, 2011·9 cites·20 claims
- 1765US5682921AUndulating transverse interface for curved flapper sealBAKER HUGHES INC·Filed 1996·Granted Nov 4, 1997·46 cites·8 claims
- 1858US7735560B2Distortion compensation for rod piston bore in subsurface safety valvesBAKER HUGHES INC·Filed 2008·Granted Jun 15, 2010·4 cites·7 claims
- 1955US8225871B2Bidirectional sealing mechanically shifted ball valve for downhole useBEALL CLIFFORD H·Filed 2009·Granted Jul 24, 2012·5 cites·14 claims
- 2053US8113286B2Downhole barrier valveBEALL CLIFFORD H·Filed 2008·Granted Feb 14, 2012·5 cites·15 claims
- 2151US4290484ASeal receptacle assemblyBAKER INT CORP·Filed 1980·Granted Sep 22, 1981·19 cites·18 claims
- 2243US9719326B2Switch between redundant control systems for a subsurface safety valveBAKER HUGHES INC·Filed 2013·Granted Aug 1, 2017·0 cites·22 claims
- 2336US2005012063A1Flexible metal sealing lipBAKER HUGHES INC·Filed 2003·Application pending·0 cites
- 2436US2004055757A1Locking apparatus with packoff capabilityBAKER HUGHES INC·Filed 2003·Application pending·0 cites
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