Inventor · disambiguated record
Leo G. Collins
Also filed as: COLLINS LEO · COLLINS LEO G · COLLINS LEO GUADALUPE
21 granted patents·2 pending applications·725 citations·filing 1993–2021
95Inventor score
Files withHALLIBURTON ENERGY SERV INC10HALLIBURTON ENERGY SERVICES INC7HALLIBURTON CO3GIUSTI JR FRANK1TIMBERCO INC1
Top patents by PatentIndex Score
23 records- 0192US5826661ALinear indexing apparatus and methods of using sameHALLIBURTON ENERGY SERV INC·Filed 1996·Granted Oct 27, 1998·149 cites·72 claims
- 0292US5305833AShifting tool for sliding sleeve valvesHALLIBURTON CO·Filed 1993·Granted Apr 26, 1994·161 cites·16 claims
- 0390US6668936B2Hydraulic control system for downhole toolsHALLIBURTON ENERGY SERV INC·Filed 2001·Granted Dec 30, 2003·108 cites·21 claims
- 0488US6119783ALinear indexing apparatus and methods of using sameHALLIBURTON ENERGY SERV INC·Filed 1998·Granted Sep 19, 2000·111 cites·13 claims
- 0581US11208870B2Flapper valve with beam springHALLIBURTON ENERGY SERVICES INC·Filed 2019·Granted Dec 28, 2021·3 cites·19 claims
- 0681US5904354AMechanically energized elementHALLIBURTON ENERGY SERV INC·Filed 1997·Granted May 18, 1999·42 cites·14 claims
- 0778US7302860B1Panel bending and testing deviceTIMBERCO INC·Filed 2005·Granted Dec 4, 2007·9 cites·37 claims
- 0875US5407292AConnector assembly for connecting two cylindrical membersHALLIBURTON CO·Filed 1993·Granted Apr 18, 1995·59 cites·21 claims
- 0964US7021386B2Safety valve having extension spring closure mechanismHALLIBURTON ENERGY SERV INC·Filed 2003·Granted Apr 4, 2006·25 cites·65 claims
- 1061US9587462B2Safety valve system for cable deployed electric submersible pumpGIUSTI JR FRANK·Filed 2012·Granted Mar 7, 2017·3 cites·14 claims
- 1161US5398764AWell tool system and method for use in a well conduitHALLIBURTON CO·Filed 1993·Granted Mar 21, 1995·35 cites·23 claims
- 1260US10273773B2Electromagnetic jarring toolHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Apr 30, 2019·1 cites·19 claims
- 1360US9528344B2Safety valve with independent flow tubeVICK JR JAMES DAN·Filed 2012·Granted Dec 27, 2016·2 cites·20 claims
- 1457US8763707B2Downhole circulating valve having a metal-to-metal sealHALLIBURTON ENERGY SERV INC·Filed 2013·Granted Jul 1, 2014·1 cites·13 claims
- 1554US8342247B2Safety valve having mono spring closure mechanismHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Jan 1, 2013·3 cites·22 claims
- 1651US11274523B2Variable torque flapper valveHALLIBURTON ENERGY SERVICES INC·Filed 2019·Granted Mar 15, 2022·0 cites·19 claims
- 1750US10544639B2Damaged seal bore repair deviceHALLIBURTON ENERGY SERVICES INC·Filed 2014·Granted Jan 28, 2020·1 cites·24 claims
- 1844US9388663B2Downhole circulating valve having a metal-to-metal seal and method for operating sameHALLIBURTON ENERGY SERVICES INC·Filed 2013·Granted Jul 12, 2016·0 cites·20 claims
- 1943US11753905B2Downhole tool actuator with viscous fluid clearance pathsHALLIBURTON ENERGY SERVICES INC·Filed 2021·Granted Sep 12, 2023·0 cites·18 claims
- 2039US2016222757A1Wave spring flapper closure mechanismHALLIBURTON ENERGY SERVICES INC·Filed 2013·Application pending·0 cites
- 2136US2014083712A1Safety Valve By-Pass System for Cable-Deployed Electric Submersible PumpHALLIBURTON ENERGY SERV INC·Filed 2012·Application pending·0 cites
- 2234US6283218B1Locating and locking mandrel for flow control deviceHALLIBURTON ENERGY SERV INC·Filed 1999·Granted Sep 4, 2001·9 cites·17 claims
- 2330US6230797B1Flow control device retrieval tool and methodHALLIBURTON ENERGY SERV INC·Filed 1999·Granted May 15, 2001·3 cites·18 claims
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