Inventor · disambiguated record

John Lofton

Also filed as: LOFTON JOHN

2 granted patents·34 citations·filing 2003–2010

62Inventor score

Technology areasE21B

Files withCHEVRON USA INC2

Top patents by PatentIndex Score

2 records

0181US8353351B2System and method for regulating pressure within a well annulusCHEVRON USA INC·Filed 2010·Granted Jan 15, 2013·10 cites·20 claims
0259US6938707B2Method and system for minimizing circulating fluid return losses during drilling of a well boreCHEVRON USA INC·Filed 2003·Granted Sep 6, 2005·24 cites·20 claims

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