Inventor · disambiguated record
William R. Welch
Also filed as: WELCH WILLIAM R
18 granted patents·1,186 citations·filing 1982–1998
96Inventor score
Files withHALLIBURTON ENERGY SERV INC6OTIS ENG CO6HALLIBURTON CO4HALLIBURTON LOGGING SERVICES1WELCH WILLIAM R1
Top patents by PatentIndex Score
18 records- 0198US5564503AMethods and systems for subterranean multilateral well drilling and completionHALLIBURTON CO·Filed 1994·Granted Oct 15, 1996·133 cites·83 claims
- 0297US5390742AInternally sealable perforable nipple for downhole well applicationsHALLIBURTON CO·Filed 1993·Granted Feb 21, 1995·272 cites·18 claims
- 0392US5875851AStatic wellhead plug and associated methods of plugging wellheadsHALLIBURTON ENERGY SERV INC·Filed 1996·Granted Mar 2, 1999·132 cites·29 claims
- 0492US5735350AMethods and systems for subterranean multilateral well drilling and completionHALLIBURTON ENERGY SERV INC·Filed 1996·Granted Apr 7, 1998·146 cites·98 claims
- 0587US5355953AElectromechanical shifter apparatus for subsurface well flow controlHALLIBURTON CO·Filed 1994·Granted Oct 18, 1994·90 cites·10 claims
- 0687US4441558AValveOTIS ENG CO·Filed 1982·Granted Apr 10, 1984·51 cites·14 claims
- 0784US4436152AShifting toolOTIS ENG CO·Filed 1982·Granted Mar 13, 1984·65 cites·5 claims
- 0879US5309988AElectromechanical shifter apparatus for subsurface well flow controlHALLIBURTON CO·Filed 1992·Granted May 10, 1994·62 cites·33 claims
- 0975US5988277ARunning tool for static wellhead plugHALLIBURTON ENERGY SERV INC·Filed 1998·Granted Nov 23, 1999·51 cites·15 claims
- 1069US4896721ALocator shifter toolOTIS ENG CO·Filed 1989·Granted Jan 30, 1990·39 cites·10 claims
- 1169US4562631AAdjusting tool and means for adjusting the axial position of a tractor wheel and hub with respect to an axleWELCH WILLIAM R·Filed 1984·Granted Jan 7, 1986·23 cites·2 claims
- 1258US5996697AStatic wellhead plugHALLIBURTON ENERGY SERV INC·Filed 1998·Granted Dec 7, 1999·27 cites·20 claims
- 1346US5375659ASonde supported operating system for control of formation production fluid flowHALLIBURTON LOGGING SERVICES·Filed 1994·Granted Dec 27, 1994·21 cites·37 claims
- 1446US4962813AWell tool locking system for staggered boreOTIS ENG CO·Filed 1989·Granted Oct 16, 1990·16 cites·13 claims
- 1546US4432416AWell flow control apparatusOTIS ENG CO·Filed 1982·Granted Feb 21, 1984·14 cites·20 claims
- 1644US4997038ALock mandrel latch assemblyOTIS ENG CO·Filed 1989·Granted Mar 5, 1991·14 cites·18 claims
- 1741US5957201AVerification apparatus and method for a static wellhead plugHALLIBURTON ENERGY SERV INC·Filed 1998·Granted Sep 28, 1999·11 cites·15 claims
- 1840US5794699AMetal-to-metal sliding side door for wellsHALLIBURTON ENERGY SERV INC·Filed 1996·Granted Aug 18, 1998·19 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →