Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Annular flow control safety valve

Annular flow control safety valve

US Patent 4273194 · Granted Jun 16, 1981

Estimated economic value: $1,244,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Leak detection system and method2023
Close-coupled analyser2022
Laser detection system and method2020
Sample cell2019
Endotracheal tube with intrinsic suction and endotracheal suction control valve2013
System for pulse-injecting fluid into a borehole2012
Borehole seismic pulse generation using rapid-opening valve2011
Method and apparatus for selective injection or flow control with through-tubing2008
Downhole flow control apparatus, operable via surface applied pressure2008
Method and apparatus for selective injection or flow control with through-tubing2005
Method and apparatus for selective injection or flow control with through-tubing2003
Wellbore flow control device2002