Inventor
RAWSON MICHAEL S
US10 patents
Patents
10 patentsUS6328062B1Dec 11, 2001
Torsion spring connections for downhole flapper
BAKER HUGHES INC52 citations96
US6283477B1Sep 4, 2001
Annular chamber seal
BAKER HUGHES INC44 citations96
US6260850B1Jul 17, 2001
Annular chamber seal
BAKER HUGHES INC65 citations96
US6253843B1Jul 3, 2001
Electric safety valve actuator
BAKER HUGHES INC87 citations96
US5799949ASep 1, 1998
Annular chamber seal
BAKER HUGHES INC48 citations96
US5496044AMar 5, 1996
Annular chamber seal
BAKER HUGHES INC54 citations96
US5682921ANov 4, 1997
Undulating transverse interface for curved flapper seal
BAKER HUGHES INC46 citations94
US6269874B1Aug 7, 2001
Electro-hydraulic surface controlled subsurface safety valve actuator
BAKER HUGHES INC79 citations93
US5984260ANov 16, 1999
Electrically driven actuator with failsafe feature
BAKER HUGHES INC92 citations93
US5918858AJul 6, 1999
Undulating transverse interface for curved flapper seal
BAKER HUGHES INC28 citations91