Inventor · disambiguated record
Michael E. Mcmahan
Also filed as: MCMAHAN MICHAEL · MCMAHAN MICHAEL E
18 granted patents·1 pending application·809 citations·filing 1980–2009
96Inventor score
Top patents by PatentIndex Score
19 records- 0196US6167963B1Removable non-metallic bridge plug or packerBAKER HUGHES INC·Filed 1998·Granted Jan 2, 2001·285 cites·27 claims
- 0292US7360592B2Compliant cladding seal/hangerBAKER HUGHES INC·Filed 2005·Granted Apr 22, 2008·47 cites·16 claims
- 0387US4452313ACirculation valveHALLIBURTON CO·Filed 1982·Granted Jun 5, 1984·77 cites·12 claims
- 0484US4691779AHydrostatic referenced safety-circulating valveHALLIBURTON CO·Filed 1986·Granted Sep 8, 1987·72 cites·65 claims
- 0573US6131663AMethod and apparatus for positioning and repositioning a plurality of service tools downhole without rotationBAKER HUGHES INC·Filed 1998·Granted Oct 17, 2000·75 cites·18 claims
- 0664US5806113AMotion controlled cradleFiled 1997·Granted Sep 15, 1998·54 cites·1 claims
- 0764US4804044APerforating gun firing tool and method of operationHALLIBURTON SERVICES·Filed 1987·Granted Feb 14, 1989·32 cites·25 claims
- 0863US4319634ADrill pipe tester valveHALLIBURTON SERVICES·Filed 1980·Granted Mar 16, 1982·28 cites·26 claims
- 0959US4458762ARecloseable auxiliary valveHALLIBURTON CO·Filed 1982·Granted Jul 10, 1984·25 cites·21 claims
- 1057US8225878B2Method and apparatus for expanded liner extension using downhole then uphole expansionADAM MARK K·Filed 2009·Granted Jul 24, 2012·4 cites·23 claims
- 1154US8215409B2Method and apparatus for expanded liner extension using uphole expansionADAM MARK K·Filed 2009·Granted Jul 10, 2012·3 cites·22 claims
- 1253US6964305B2Cup seal expansion toolBAKER HUGHES INC·Filed 2003·Granted Nov 15, 2005·14 cites·23 claims
- 1353US4420045ADrill pipe tester and safety valveHALLIBURTON CO·Filed 1982·Granted Dec 13, 1983·20 cites·19 claims
- 1452US4915171AAbove packer perforate test and sample tool and method of useHALLIBURTON CO·Filed 1988·Granted Apr 10, 1990·21 cites·20 claims
- 1549US4319633ADrill pipe tester and safety valveHALLIBURTON SERVICES·Filed 1980·Granted Mar 16, 1982·18 cites·25 claims
- 1646US4421172ADrill pipe tester and safety valveHALLIBURTON CO·Filed 1981·Granted Dec 20, 1983·15 cites·3 claims
- 1744US6739391B2Surface deployed cement separation plugBAKER HUGHES INC·Filed 2001·Granted May 25, 2004·7 cites·27 claims
- 1844US2010032167A1Method for Making Wellbore that Maintains a Minimum DriftADAM MARK K·Filed 2009·Application pending·0 cites
- 1943US4295361ADrill pipe tester with automatic fill-upHALLIBURTON CO·Filed 1980·Granted Oct 20, 1981·12 cites·19 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →