Inventor
MORRILL CHARLES D
31 patents
⚠️ This page may combine multiple inventors who share the name “MORRILL CHARLES D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HYDRIL CO
16 patentsUS5655745AAug 12, 1997
Low profile and lightweight high pressure blowout preventer
HYDRIL CO126 citations99
US6173770B1Jan 16, 2001
Shear ram for ram-type blowout preventer
HYDRIL CO125 citations98
US4502534AMar 5, 1985
Flow diverter
HYDRIL CO145 citations98
US4444250AApr 24, 1984
Flow diverter
HYDRIL CO188 citations98
US5343946ASep 6, 1994
High pressure packer for a drop-in check valve
HYDRIL CO56 citations96
US4496173AJan 29, 1985
Threaded coupling
HYDRIL CO86 citations96
US6089321AJul 18, 2000
Pressure balanced choke and kill line connector
HYDRIL CO28 citations92
US5645098AJul 8, 1997
Low profile and lightweight high pressure blowout preventer
HYDRIL CO24 citations92
US5255890AOct 26, 1993
Ram type blowout preventer
HYDRIL CO34 citations92
US4554976ANov 26, 1985
Test tool for subsea blowout preventer stack
HYDRIL CO47 citations92
US4513823AApr 30, 1985
Cylindrical gate valve apparatus and method
HYDRIL CO30 citations92
US4476935AOct 16, 1984
Safety valve apparatus and method
HYDRIL CO30 citations92
US5647572AJul 15, 1997
Low profile and lightweight high pressure blowout preventer
HYDRIL CO14 citations82
US5642872AJul 1, 1997
Low profile and lightweight high pressure blowout preventer
HYDRIL CO8 citations74
US5638855AJun 17, 1997
Low profile and lightweight high pressure blowout preventer
HYDRIL CO8 citations74
USRE37538EFeb 5, 2002
Ram type blowout preventer
HYDRIL CO4 citations63
SMITH INTERNATIONAL
10 patentsUS4363465ADec 14, 1982
Extreme temperature, high pressure balanced, rising stem gate valve with super preloaded, stacked, solid lubricated, metal-to-metal seal
SMITH INTERNATIONAL49 citations92
US4346919AAug 31, 1982
Remote automatic make-up stab-in sealing system
SMITH INTERNATIONAL30 citations92
US4476897AOct 16, 1984
Flowline connector seal
SMITH INTERNATIONAL21 citations82
US4402773ASep 6, 1983
Remote automatic make-up stab-in sealing system
SMITH INTERNATIONAL24 citations82
US4382717AMay 10, 1983
Connection of underwater lines
SMITH INTERNATIONAL25 citations82
US4371291AFeb 1, 1983
Underwater flowline connector
SMITH INTERNATIONAL19 citations77
US4579372AApr 1, 1986
Flowline connector seal
SMITH INTERNATIONAL13 citations74
US4477205AOct 16, 1984
Apparatus for connecting underwater flow line hubs
SMITH INTERNATIONAL14 citations72
US4371005AFeb 1, 1983
Protective cover for underwater flow line hub
SMITH INTERNATIONAL8 citations72
US4329085AMay 11, 1982
Connection of underwater lines
SMITH INTERNATIONAL13 citations68
MCEVOY OILFIELD EQUIPMENT CO
4 patentsUS4097069AJun 27, 1978
Marine riser connector
MCEVOY OILFIELD EQUIPMENT CO66 citations96
US4264054AApr 28, 1981
Metal-to-metal seat hub seals
MCEVOY OILFIELD EQUIPMENT CO41 citations92
US4229027AOct 21, 1980
Remote automatic make-up stab-in sealing system
MCEVOY OILFIELD EQUIPMENT CO12 citations74
US4228704AOct 21, 1980
Marine riser tool
MCEVOY OILFIELD EQUIPMENT CO0 citations42