Inventor
ARENDT HENRY P
16 patents
⚠️ This page may combine multiple inventors who share the name “ARENDT HENRY P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ENG CO
15 patentsUS5058683AOct 22, 1991
Wet connector
OTIS ENG CO74 citations96
US4921438AMay 1, 1990
Wet connector
OTIS ENG CO113 citations96
US4997384AMar 5, 1991
Wet connector
OTIS ENG CO55 citations92
US4938060AJul 3, 1990
Downhole inspection system
OTIS ENG CO86 citations92
US4344602AAug 17, 1982
Lock open mechanism for subsurface safety valve
OTIS ENG CO32 citations92
US4201363AMay 6, 1980
Tubing retrievable surface controlled subsurface safety valve
OTIS ENG CO32 citations92
US4049052ASep 20, 1977
Subsurface annulus safety valve
OTIS ENG CO42 citations92
US4355686AOct 26, 1982
Well system and method
OTIS ENG CO37 citations89
US4127167ANov 28, 1978
Lubricator for moving well equipment through flow conductor
OTIS ENG CO21 citations82
US4078810AMar 14, 1978
Piston type seal unit for wells
OTIS ENG CO27 citations82
US4164977AAug 21, 1979
Well latch
OTIS ENG CO27 citations78
US4418756ADec 6, 1983
Method and apparatus for performing operations in well tubing
OTIS ENG CO7 citations73
US4334581AJun 15, 1982
Balanced area safety valve
OTIS ENG CO12 citations73
US3935903AFeb 3, 1976
Well tubing protective fluid injection system
OTIS ENG CO16 citations73
US4119147AOct 10, 1978
Pumpdown safety valve
OTIS ENG CO3 citations62