P

Assignee

UMPHRIES DON

US9 patents

Top patents by PatentIndex Score

US10119349B2Nov 6, 2018

Redundant drill string cutting system

UMPHRIES DON7 citations82
US9476290B2Oct 25, 2016

Bottom hole firing head and method

UMPHRIES DON14 citations82
US8910556B2Dec 16, 2014

Bottom hole firing head and method

UMPHRIES DON15 citations82
US8286702B2Oct 16, 2012

Wireless downhole tool positioning system

UMPHRIES DON6 citations82
US10240440B2Mar 26, 2019

Total control perforator and system

UMPHRIES DON3 citations71
US9033032B2May 19, 2015

Wireless downhole tool positioning control

UMPHRIES DON3 citations60
US8302693B2Nov 6, 2012

Wireless downhole tool positioning system

UMPHRIES DON2 citations60
US8272441B2Sep 25, 2012

Wireless downhole tool positioning system

UMPHRIES DON3 citations60
US10138688B2Nov 27, 2018

Wireless downhole tool positioning control

UMPHRIES DON0 citations50