Inventor · disambiguated record
Brian C. Llewellyn
Also filed as: LLEWELLYN BRIAN C · LLEWELLYN BRIAN CHRISTOPHER
8 granted patents·84 citations·filing 2005–2013
87Inventor score
Technology areasE21B
Top patents by PatentIndex Score
8 records- 0192US7441599B2Controlling the pressure within an annular volume of a wellboreCHEVRON USA INC·Filed 2005·Granted Oct 28, 2008·34 cites·23 claims
- 0289US7870905B2Controlling the pressure within an annular volume of a wellboreCHEVRON USA INC·Filed 2010·Granted Jan 18, 2011·10 cites·18 claims
- 0379US9447675B2In-situ method and system for removing heavy metals from produced fluidsCHEVRON USA INC·Filed 2013·Granted Sep 20, 2016·6 cites·24 claims
- 0479US7743830B2Controlling the pressure within an annular volume of a wellboreCHEVRON USA INC·Filed 2008·Granted Jun 29, 2010·12 cites·22 claims
- 0570US7963333B2Controlling the pressure within an annular volume of a wellboreCHEVRON USA INC·Filed 2009·Granted Jun 21, 2011·7 cites·17 claims
- 0666US8077053B2Method and apparatus for sensing a borehole characteristicTHOMPSON M CLARK·Filed 2006·Granted Dec 13, 2011·11 cites·25 claims
- 0762US7950460B2Controlling the pressure within an annular volume of a wellboreCHEVRON USA INC·Filed 2009·Granted May 31, 2011·4 cites·24 claims
- 0848US9447674B2In-situ method and system for removing heavy metals from produced fluidsCHEVRON USA INC·Filed 2013·Granted Sep 20, 2016·0 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →