Inventor · disambiguated record
Graham E. Farquhar
Also filed as: FARQUHAR GRAHAM · FARQUHAR GRAHAM E
9 granted patents·192 citations·filing 2003–2016
89Inventor score
Technology areasE21B
Top patents by PatentIndex Score
9 records- 0190US9145755B2Sealing annular gaps in a wellHALLIBURTON ENERGY SERVICES INC·Filed 2013·Granted Sep 29, 2015·16 cites·17 claims
- 0290US8479809B2Anti-extrusion backup system, packing element system having backup system, and methodFARQUHAR GRAHAM E·Filed 2010·Granted Jul 9, 2013·27 cites·27 claims
- 0386US7270191B2Flapper opening mechanismBAKER HUGHES INC·Filed 2005·Granted Sep 18, 2007·48 cites·16 claims
- 0482US10472920B2Packing element with timed setting sequenceHALLIBURTON ENERGY SERVICES INC·Filed 2016·Granted Nov 12, 2019·7 cites·11 claims
- 0580US6966368B2Plug and expel flow control deviceBAKER HUGHES INC·Filed 2003·Granted Nov 22, 2005·58 cites·26 claims
- 0677US7730955B2Grooved expandable recess shoe and pipe for deployment of mechanical positioning devicesBAKER HUGHES INC·Filed 2008·Granted Jun 8, 2010·16 cites·16 claims
- 0770US7665529B2Lubricator valve with rotational flip-flap armBAKER HUGHES INC·Filed 2006·Granted Feb 23, 2010·17 cites·18 claims
- 0853US7607486B2One trip tubular expansion and recess formation apparatus and methodBAKER HUGHES INC·Filed 2007·Granted Oct 27, 2009·3 cites·19 claims
- 0930US7857064B2Insert sleeve forming device for a recess shoeBAKER HUGHES INC·Filed 2008·Granted Dec 28, 2010·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →