Inventor · disambiguated record
Robert C. Hammett
Also filed as: HAMMETT ROBERT C · HAMMETT ROBERT CRAIG
7 granted patents·515 citations·filing 1988–2001
90Inventor score
Technology areasE21B
Top patents by PatentIndex Score
7 records- 0192US5211241AVariable flow sliding sleeve valve and positioning shifting tool thereforOTIS ENG CO·Filed 1991·Granted May 18, 1993·162 cites·16 claims
- 0283US5183114ASleeve valve device and shifting tool thereforOTIS ENG CO·Filed 1991·Granted Feb 2, 1993·93 cites·33 claims
- 0382US4834183ASurface controlled subsurface safety valveOTIS ENG CO·Filed 1988·Granted May 30, 1989·66 cites·19 claims
- 0481US6675891B2Apparatus and method for gravel packing a horizontal open hole production intervalHALLIBURTON ENERGY SERV INC·Filed 2001·Granted Jan 13, 2004·61 cites·45 claims
- 0580US5775433ACoiled tubing pulling toolHALLIBURTON CO·Filed 1996·Granted Jul 7, 1998·91 cites·20 claims
- 0646US5865255AFull bore nipple and associated lock mandrel thereforHALLIBURTON ENERGY SERV INC·Filed 1997·Granted Feb 2, 1999·23 cites·40 claims
- 0740US5794699AMetal-to-metal sliding side door for wellsHALLIBURTON ENERGY SERV INC·Filed 1996·Granted Aug 18, 1998·19 cites·24 claims
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