Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Assembly for sealing the annulus between concentric cylindrical surfaces

Assembly for sealing the annulus between concentric cylindrical surfaces

US Patent 6176310 · Granted Jan 23, 2001

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Casing hanger and running tool system2018
Drilling/frac adapter and method of use2015
Mandrel casing hanger and running tool system2013
Bathroom leak damage prevention apparatus2008
Method of providing an internal circumferential shoulder in a cylindrical passag2002
Method of surface protection of a semiconductor wafer during polishing1995
Sealing method and apparatus for wellheads1994
Backside gettering method employing a monocrystalline germanium-silicon layer1993
Hydraulic/torsion packoff installation tool1991
Insulating support for tubing string1990
Wellhead structure1989
Wellhead slip and seal assembly1989