Inventor
SCHIELD JOHN A
US29 patents
⚠️ This page may combine multiple inventors who share the name “SCHIELD JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PETROLITE CORP
14 patentsUS5160642ANov 3, 1992
Polyimide quaternary salts as clay stabilization agents
PETROLITE CORP72 citations95
US5672183ASep 30, 1997
Anti-static additives for hydrocarbons
PETROLITE CORP19 citations92
US4757862AJul 19, 1988
Shale stabilizer and method of use thereof
PETROLITE CORP30 citations92
US4708993ANov 24, 1987
Cold flow improver and method of use thereof
PETROLITE CORP5 citations62
US4617025AOct 14, 1986
Ester-containing halopolyalkylenes
PETROLITE CORP3 citations62
US4471098ASep 11, 1984
Ester-containing halopolyalkylenes
PETROLITE CORP3 citations62
US4568726AFeb 4, 1986
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4568359AFeb 4, 1986
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4553980ANov 19, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4554327ANov 19, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4544712AOct 1, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4541839ASep 17, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4536191AAug 20, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
US4536551AAug 20, 1985
Ester-containing halopolyalkylenes
PETROLITE CORP0 citations52
BAKER HUGHES INC
13 patentsUS6391070B2May 21, 2002
Anti-static additive compositions for hydrocarbon fuels
BAKER HUGHES INC20 citations92
US8366914B2Feb 5, 2013
Multifunctional scavenger for hydrocarbon fluids
BAKER HUGHES INC8 citations83
US6887447B2May 3, 2005
Hydrogen sulfide abatement in molten sulfur
BAKER HUGHES INC13 citations83
US7601675B2Oct 13, 2009
Polyamine salts as clay stabilizing agents
BAKER HUGHES INC11 citations82
US5857287AJan 12, 1999
Methods and compositions for improvement of low temperature fluidity of fuel oils
BAKER HUGHES INC12 citations74
US7328745B2Feb 12, 2008
High molecular weight polyamine salts as clay stabilizing agents
BAKER HUGHES INC7 citations72
US7284610B2Oct 23, 2007
Polyamine salts as clay stabilizing agents
BAKER HUGHES INC8 citations72
US9719027B2Aug 1, 2017
Low viscosity metal-based hydrogen sulfide scavengers
BAKER HUGHES INC2 citations71
US6656445B2Dec 2, 2003
Hydrogen sulfide abatement in molten sulfur
BAKER HUGHES INC3 citations62
US7867295B2Jan 11, 2011
Branched carboxylic acids as fuel lubricity additives
BAKER HUGHES INC5 citations60
US7718586B2May 18, 2010
Hydrocarbons having reduced levels of mercaptans and method and composition useful for preparing same
BAKER HUGHES INC5 citations54
US9725668B2Aug 8, 2017
Process for clarifying biofuels
BAKER HUGHES INC0 citations51
US7838468B2Nov 23, 2010
High molecular weight polyamine salts as clay stabilizing agents
BAKER HUGHES INC0 citations51