Inventor · disambiguated record
Dhirajlal C. Patel
Also filed as: PATEL DHIRAJLAL C
12 granted patents·842 citations·filing 1981–1999
94Inventor score
Technology areasE21B
Top patents by PatentIndex Score
12 records- 0196US5413180AOne trip backwash/sand control system with extendable washpipe isolationHALLIBURTON CO·Filed 1993·Granted May 9, 1995·231 cites·23 claims
- 0293US5343949AIsolation washpipe for earth well completions and method for use in gravel packing a wellHALLIBURTON CO·Filed 1992·Granted Sep 6, 1994·225 cites·23 claims
- 0384US5641023AShifting tool for a subterranean completion structureHALLIBURTON ENERGY SERV INC·Filed 1995·Granted Jun 24, 1997·114 cites·78 claims
- 0472US4671354AWell packerOTIS ENG CO·Filed 1985·Granted Jun 9, 1987·45 cites·14 claims
- 0568US5404955AReleasable running tool for setting well toolHALLIBURTON CO·Filed 1993·Granted Apr 11, 1995·45 cites·32 claims
- 0664US6378609B1Universal washdown system for gravel packing and fracturingHALLIBURTON ENERGY SERV INC·Filed 1999·Granted Apr 30, 2002·58 cites·34 claims
- 0759US4438811ALatch for use in a wellOTID ENGINEERING CORP·Filed 1982·Granted Mar 27, 1984·27 cites·12 claims
- 0856US4441553AAnchor for use in a wellOTIS ENG CO·Filed 1982·Granted Apr 10, 1984·21 cites·6 claims
- 0956US4420041AMethod of using a valve in gravel packingOTIS ENG CO·Filed 1982·Granted Dec 13, 1983·21 cites·6 claims
- 1049US5343953AThrough-tubing recirculating tool assembly for well completionsHALLIBURTON CO·Filed 1993·Granted Sep 6, 1994·22 cites·24 claims
- 1149US4378847AValveOTIS ENG CO·Filed 1981·Granted Apr 5, 1983·17 cites·3 claims
- 1248US4378842AValveOTIS ENG CO·Filed 1981·Granted Apr 5, 1983·16 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →