Inventor
KRUEGER V RUDOLPH ERNST
US25 patents
⚠️ This page may combine multiple inventors who share the name “KRUEGER V RUDOLPH ERNST”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WWT NORTH AMERICA HOLDINGS INC
11 patentsUS9488020B2Nov 8, 2016
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC10 citations92
US9228403B1Jan 5, 2016
Gripper assembly for downhole tools
WWT NORTH AMERICA HOLDINGS INC10 citations92
US8944161B2Feb 3, 2015
Gripper assembly for downhole tools
WWT NORTH AMERICA HOLDINGS INC10 citations92
US10934793B2Mar 2, 2021
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC5 citations84
US10156107B2Dec 18, 2018
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC3 citations84
US9988868B2Jun 5, 2018
Gripper assembly for downhole tools
WWT NORTH AMERICA HOLDINGS INC7 citations84
US11608699B2Mar 21, 2023
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC2 citations73
US11512578B2Nov 29, 2022
Downhole active torque control method
WWT NORTH AMERICA HOLDINGS INC2 citations71
US12331605B2Jun 17, 2025
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC0 citations62
US12024964B2Jul 2, 2024
Eccentric linkage gripper
WWT NORTH AMERICA HOLDINGS INC0 citations62
US9708872B2Jul 18, 2017
Clean out sub
WWT NORTH AMERICA HOLDINGS INC4 citations62
WESTERN WELL TOOL INC
8 patentsUS7048047B2May 23, 2006
Gripper assembly for downhole tools
WESTERN WELL TOOL INC74 citations99
US6640894B2Nov 4, 2003
Gripper assembly for downhole tools
WESTERN WELL TOOL INC77 citations99
US6464003B2Oct 15, 2002
Gripper assembly for downhole tractors
WESTERN WELL TOOL INC85 citations99
US7604060B2Oct 20, 2009
Gripper assembly for downhole tools
WESTERN WELL TOOL INC24 citations96
US7493967B2Feb 24, 2009
Tractor with improved valve system
WESTERN WELL TOOL INC41 citations96
US7275593B2Oct 2, 2007
Gripper assembly for downhole tools
WESTERN WELL TOOL INC34 citations96
US7191829B2Mar 20, 2007
Gripper assembly for downhole tools
WESTERN WELL TOOL INC37 citations96
US7343982B2Mar 18, 2008
Tractor with improved valve system
WESTERN WELL TOOL INC35 citations92