Inventor
COLLINS LEO G
US17 patents
⚠️ This page may combine multiple inventors who share the name “COLLINS LEO G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HALLIBURTON ENERGY SERV INC
9 patentsUS5826661AOct 27, 1998
Linear indexing apparatus and methods of using same
HALLIBURTON ENERGY SERV INC149 citations98
US6668936B2Dec 30, 2003
Hydraulic control system for downhole tools
HALLIBURTON ENERGY SERV INC108 citations97
US6119783ASep 19, 2000
Linear indexing apparatus and methods of using same
HALLIBURTON ENERGY SERV INC111 citations97
US7021386B2Apr 4, 2006
Safety valve having extension spring closure mechanism
HALLIBURTON ENERGY SERV INC25 citations92
US5904354AMay 18, 1999
Mechanically energized element
HALLIBURTON ENERGY SERV INC42 citations92
US6283218B1Sep 4, 2001
Locating and locking mandrel for flow control device
HALLIBURTON ENERGY SERV INC9 citations73
US8342247B2Jan 1, 2013
Safety valve having mono spring closure mechanism
HALLIBURTON ENERGY SERV INC3 citations62
US6230797B1May 15, 2001
Flow control device retrieval tool and method
HALLIBURTON ENERGY SERV INC3 citations62
US8763707B2Jul 1, 2014
Downhole circulating valve having a metal-to-metal seal
HALLIBURTON ENERGY SERV INC1 citations51
HALLIBURTON CO
3 patentsUS5305833AApr 26, 1994
Shifting tool for sliding sleeve valves
HALLIBURTON CO161 citations98
US5407292AApr 18, 1995
Connector assembly for connecting two cylindrical members
HALLIBURTON CO59 citations95
US5398764AMar 21, 1995
Well tool system and method for use in a well conduit
HALLIBURTON CO35 citations92
HALLIBURTON ENERGY SERVICES INC
3 patentsUS10273773B2Apr 30, 2019
Electromagnetic jarring tool
HALLIBURTON ENERGY SERVICES INC1 citations62
US10544639B2Jan 28, 2020
Damaged seal bore repair device
HALLIBURTON ENERGY SERVICES INC1 citations53
US9388663B2Jul 12, 2016
Downhole circulating valve having a metal-to-metal seal and method for operating same
HALLIBURTON ENERGY SERVICES INC0 citations41