Assignee
PETROLITE CORP
US431 patents
Top patents by PatentIndex Score
US5284576AFeb 8, 1994
Method of scavenging hydrogen sulfide from hydrocarbons
PETROLITE CORP52 citations96
US5169411ADec 8, 1992
Suppression of the evolution of hydrogen sulfide gases from crude oil, petroleum residua and fuels
PETROLITE CORP115 citations96
US5112496AMay 12, 1992
Methods for inhibition of scale in high brine environments
PETROLITE CORP149 citations96
US5074991ADec 24, 1991
Suppression of the evolution of hydrogen sulfide gases
PETROLITE CORP117 citations96
US4443609AApr 17, 1984
Tetrahydrothiazole phosphonic acids or esters thereof
PETROLITE CORP53 citations96
US4416668ANov 22, 1983
Antistatic agents for organic liquids
PETROLITE CORP62 citations96
US4106904AAug 15, 1978
Substituted pyridines and dihydropyridines as corrosion inhibitors
PETROLITE CORP101 citations96
US4080375AMar 21, 1978
Methylene phosphonates of amino-terminated oxyalkylates and uses therefor
PETROLITE CORP64 citations96
US5160642ANov 3, 1992
Polyimide quaternary salts as clay stabilization agents
PETROLITE CORP72 citations95
US4796702AJan 10, 1989
Multipurpose aqueous foamer
PETROLITE CORP88 citations95
US4770796ASep 13, 1988
Encapsulated breaker for cross-linked acid gel, fracture acidizing fluid containing same and method of use thereof
PETROLITE CORP112 citations95
US4085134AApr 18, 1978
Amino-phosphonic-sulfonic acids
PETROLITE CORP66 citations95
US3988508AOct 26, 1976
High internal phase ratio emulsion polymers
PETROLITE CORP71 citations95
US3974116AAug 10, 1976
Emulsion suspensions and process for adding same to system
PETROLITE CORP54 citations95
US4818410AApr 4, 1989
Method of removing water soluble organics from oil process water
PETROLITE CORP53 citations94
US3936729AFeb 3, 1976
Conductivity measurement probe
PETROLITE CORP97 citations94
US4343660AAug 10, 1982
Corrosion inhibiting system
PETROLITE CORP39 citations93
US4341657AJul 27, 1982
Use of quaternized derivatives of polymerized pyridines and quinolines as corrosion inhibitors
PETROLITE CORP29 citations93
US4051110ASep 27, 1977
Methylene phosphonates of polymerized polyalkylenepolyamines
PETROLITE CORP42 citations93
US4032514AJun 28, 1977
Oxyalkylated cyclic phenol-aldehyde resins and uses therefor
PETROLITE CORP65 citations93
US5785895AJul 28, 1998
Biodegradable corrosion inhibitors of low toxicity
PETROLITE CORP22 citations92
US5672183ASep 30, 1997
Anti-static additives for hydrocarbons
PETROLITE CORP19 citations92
US5223127AJun 29, 1993
Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines
PETROLITE CORP21 citations92
US5110874AMay 5, 1992
Methods and compositions for reduction of drag in hydrocarbon fluids
PETROLITE CORP29 citations92
US5089619AFeb 18, 1992
Methods for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP26 citations92
US5089227AFeb 18, 1992
Methods for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP25 citations92
US5026483AJun 25, 1991
Methods for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP22 citations92
US5013451AMay 7, 1991
Methods for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP27 citations92
US4983186AJan 8, 1991
Methods and compositions for reduction of drag in hydrocarbon fluids
PETROLITE CORP43 citations92
US4956099ASep 11, 1990
Methods for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP28 citations92
US4941994AJul 17, 1990
Corrosion inhibitors for use in hot hydrocarbons
PETROLITE CORP46 citations92
US4925497AMay 15, 1990
Solvent for paraffin removal from oilfield equipment
PETROLITE CORP34 citations92
US4864075ASep 5, 1989
Dithiocarbamates for treating hydrocarbon recovery operations and industrial waters
PETROLITE CORP38 citations92
US4844620AJul 4, 1989
System for producing high-internal-phase-ratio emulsion products on a continuous basis
PETROLITE CORP66 citations92
US4757862AJul 19, 1988
Shale stabilizer and method of use thereof
PETROLITE CORP30 citations92
US4689177AAug 25, 1987
Use of tridithiocarbamic acid compositions as demulsifiers
PETROLITE CORP26 citations92
US4537601AAug 27, 1985
Antistats containing acrylonitrile copolymers and polyamines
PETROLITE CORP47 citations92
US4491651AJan 1, 1985
Antistats containing acrylonitrile copolymers and polyamines
PETROLITE CORP35 citations92
US4454047AJun 12, 1984
Process of treating aqueous systems
PETROLITE CORP45 citations92
US4446056AMay 1, 1984
Preparation of mixture of nitrogen and sulfur-nitrogen heterocyclics and use in corrosion inhibiting
PETROLITE CORP30 citations92
US4383438AMay 17, 1983
Fouling test apparatus
PETROLITE CORP93 citations92
US4343730AAug 10, 1982
Water-in-oil emulsions of polymers of quaternary ammonium compounds of the acrylamido type
PETROLITE CORP37 citations92
US4341887AJul 27, 1982
Azetidinium salts and polymers and copolymers thereof
PETROLITE CORP35 citations92
US4235838ANov 25, 1980
Use of benzazoles as corrosion inhibitors
PETROLITE CORP37 citations92
US4163728AAug 7, 1979
Preparation of magnesium-containing dispersions from magnesium carboxylates at low carboxylate stoichiometry
PETROLITE CORP43 citations92
US5634971AJun 3, 1997
Process for dispersing pigments with polyoxyalkylated ethers
PETROLITE CORP20 citations91
US5480860AJan 2, 1996
Methods for reducing sulfides in sewage gas
PETROLITE CORP57 citations91
US5456767AOct 10, 1995
Corrosion inhibition with bilayer-forming surfactants
PETROLITE CORP22 citations91
US5197627AMar 30, 1993
Double walled storage tank
PETROLITE CORP72 citations91
US5027901AJul 2, 1991
Method of oil well corrosion inhibition via emulsions and emulsions therefore
PETROLITE CORP65 citations91
Showing the top 50 of 431 patents by PatentIndex Score.