Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Sealing arrangement for a down hole valve

Sealing arrangement for a down hole valve

US Patent 8955847 · Granted Feb 17, 2015

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Sensor assembly and system, and a method of determining the free water level in 2025
Casing drilling system and method2017
Actuator for dual drill string valve and drill string valve configurations there2016
Fluid partition unit2015
Method for initiating fluid circulation using dual drill pipe2015
Actuator for dual drill string valve and rotary drill string valve configuration2015
Down hole well tool with expansion tool2015
Down hole well tool with rolling means2015
Structure for a nested dual drill pipe joint2014
Device for passive pressure sealing2014
Plug with gripping means2012
Pre-tensioned sealing means arrangement2011