Inventor
WEAVER RANDALL FERRAIN
US12 patents
⚠️ This page may combine multiple inventors who share the name “WEAVER RANDALL FERRAIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT OILWELL VARCO LP
8 patentsUS8365754B2Feb 5, 2013
Valve cover assembly and method of using the same
NAT OILWELL VARCO LP61 citations96
US7789161B2Sep 7, 2010
Apparatus for interconnecting and sealing between fixed and rotating conduits and methods of installing same
NAT OILWELL VARCO LP27 citations91
US7287460B2Oct 30, 2007
Hydraulic retention system for reciprocating pump cylinder liner
NAT OILWELL VARCO LP10 citations82
US9670923B2Jun 6, 2017
Wiper seal assemblies for a reciprocating pump and methods relating thereto
NAT OILWELL VARCO LP5 citations68
US9448132B2Sep 20, 2016
System and method for monitoring seals between a stationary conduit and a rotating conduit
NAT OILWELL VARCO LP2 citations61
US11603730B2Mar 14, 2023
Blowout preventer testing apparatus and method
NAT OILWELL VARCO LP0 citations58
US11608702B2Mar 21, 2023
Variable blowout preventer apparatus and method
NAT OILWELL VARCO LP0 citations47
US10737283B2Aug 11, 2020
Fluid separation apparatus and system
NAT OILWELL VARCO LP0 citations44