Inventor
YONKER JOHN H
21 patents
⚠️ This page may combine multiple inventors who share the name “YONKER JOHN H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ENG CO
14 patentsUS4730677AMar 15, 1988
Method and system for maintenance and servicing of subsea wells
OTIS ENG CO165 citations95
US4494608AJan 22, 1985
Well injection system
OTIS ENG CO58 citations95
US5195585AMar 23, 1993
Wireline retrievable jet cleaning tool
OTIS ENG CO81 citations94
US4273186AJun 16, 1981
Well safety valve system
OTIS ENG CO40 citations92
US4227573AOct 14, 1980
Reinforced seal unit for pumpdown pistons or well swabs
OTIS ENG CO32 citations92
US4513764AApr 30, 1985
Valve
OTIS ENG CO19 citations82
US4026363AMay 31, 1977
Apparatus and method for performing a desired operation at a specified location in a well
OTIS ENG CO28 citations82
US4294315AOct 13, 1981
Landing nipple
OTIS ENG CO22 citations79
US4103740AAug 1, 1978
Well tool with a pawl
OTIS ENG CO11 citations74
US4039026AAug 2, 1977
Kickover tool
OTIS ENG CO15 citations74
US4428557AJan 31, 1984
Single line deep depth safety valve
OTIS ENG CO13 citations73
US4418756ADec 6, 1983
Method and apparatus for performing operations in well tubing
OTIS ENG CO7 citations73
US4432416AFeb 21, 1984
Well flow control apparatus
OTIS ENG CO14 citations69
US4039027AAug 2, 1977
Circumferential centralizer
OTIS ENG CO2 citations62
HALLIBURTON CO
4 patentsUS5492173AFeb 20, 1996
Plug or lock for use in oil field tubular members and an operating system therefor
HALLIBURTON CO234 citations99
US5271461ADec 21, 1993
Coiled tubing deployed inflatable stimulation tool
HALLIBURTON CO46 citations91
US5832998ANov 10, 1998
Coiled tubing deployed inflatable stimulation tool
HALLIBURTON CO36 citations89
US5284208AFeb 8, 1994
Production logging system using through flow line tools
HALLIBURTON CO24 citations88