Assignee

ELF AQUITAINE

FR496 patents

Top patents by PatentIndex Score

US4686653AAug 11, 1987

Device for ionophoresis comprising at least a membrane electrode assembly, for the transcutaneous administration of active principles to a subject

ELF AQUITAINE122 citations95

US5620048AApr 15, 1997

Oil-well installation fitted with a bottom-well electric pump

ELF AQUITAINE97 citations95

US5493288AFeb 20, 1996

System for multidirectional information transmission between at least two units of a drilling assembly

ELF AQUITAINE78 citations95

US5144298ASep 1, 1992

Dynamometric measuring assembly for a drill pipe equipped with means of radiotransmission

ELF AQUITAINE55 citations95

US5141061AAug 25, 1992

Method and equipment for drilling control by vibration analysis

ELF AQUITAINE57 citations95

US5130842AJul 14, 1992

Method for rapid and uniform heating of a transparent and/or reflecting multilayer optical system with polymeric solid electrolyte

ELF AQUITAINE45 citations95

US4578326AMar 25, 1986

Novel macromolecular material for use in realizing electrolytes and/or electrodes

ELF AQUITAINE60 citations95

US4478720AOct 23, 1984

Fractionation process for mixtures by elution chromatography with liquid in supercritical state and installation for its operation

ELF AQUITAINE63 citations95

US4399112AAug 16, 1983

Process for the catalytic incineration of residual gases containing a low content of at least one sulfur compound selected from COS, CS2 and the mercaptans and possibility at least one member of the group

ELF AQUITAINE62 citations95

US5788000AAug 4, 1998

Stabilizer-reamer for drilling an oil well

ELF AQUITAINE147 citations94

US5250784AOct 5, 1993

Method and device for cutting a multilayer assembly composed of a plurality of thin films and comprising a thin film electrochemical generator or a component part thereof

ELF AQUITAINE90 citations94

US5209914AMay 11, 1993

Liquid absorbing acidic gases and use thereof of in deacidification of gases

ELF AQUITAINE60 citations94

US4758483AJul 19, 1988

Novel macromolecular material for use in realizing electrolytes and/or electrodes

ELF AQUITAINE96 citations94

US4155405AMay 22, 1979

Prevention of inflow of water into wells or shafts which have already been drilled or are being drilled

ELF AQUITAINE52 citations94

US4120362AOct 17, 1978

Subsea station

ELF AQUITAINE68 citations94

US4095649AJun 20, 1978

Reentry system for subsea well apparatus

ELF AQUITAINE57 citations94

US6011557AJan 4, 2000

Method for obtaining a representation of a geological structure

ELF AQUITAINE77 citations93

US4549584AOct 29, 1985

Process and device for filling chromatography columns

ELF AQUITAINE67 citations93

US5766567AJun 16, 1998

Method for desulphurising a gaseous mixture containing H2 S and SO.sub.

ELF AQUITAINE23 citations92

US5607657AMar 4, 1997

Removal of sulfur compounds in claus type residual gases with sulfur recovery

ELF AQUITAINE24 citations92

US5508013AApr 16, 1996

Process for the production of sulphur from at least one sour gas containing hydrogen sulphide and a fuel effluent and thermal reactor

ELF AQUITAINE39 citations92

US5421165AJun 6, 1995

Process for denitrogenation of a feedstock of a liquefied mixture of hydrocarbons consisting chiefly of methane and containing at least 2 mol % of nitrogen

ELF AQUITAINE78 citations92

US5302810AApr 12, 1994

Method for rapid and uniform heating of a multilayer assembly comprising at least one thin layer based on an ion-conducting macromolecular material interleaved between two structures with high electronic conduction

ELF AQUITAINE32 citations92

US5268994ADec 7, 1993

Method of plotting surfaces in a 3D volume

ELF AQUITAINE45 citations92

US5256821AOct 26, 1993

Method of synthesis of sulphonylimides

ELF AQUITAINE42 citations92

US5233304AAug 3, 1993

Electromagnetic source integrated into an element of a well casing

ELF AQUITAINE78 citations92

US5185140AFeb 9, 1993

Process for removing sulphur compounds from a residual gas

ELF AQUITAINE22 citations92

US5148494ASep 15, 1992

Process for automatic plotting and assistance interpretation of seismic cross-sections in particular using image analysis techniques

ELF AQUITAINE54 citations92

US5068445ANov 26, 1991

Process for the preparation of organic disulphides and polysulphides

ELF AQUITAINE45 citations92

US4952740AAug 28, 1990

Cyclic phosphonites

ELF AQUITAINE75 citations92

US4935043AJun 19, 1990

Cryogenic process for desulphurization and gasoline removal of a gaseous mixture comprising methane containing H2 S and hydrocarbons having 2 carbon atoms and higher

ELF AQUITAINE39 citations92

US4897917AFeb 6, 1990

Method of assembling components of an electrochemical generator using thin films of lithium

ELF AQUITAINE32 citations92

US4814159AMar 21, 1989

Catalytic process for the production of sulphur from a gas containing H.sub. S

ELF AQUITAINE24 citations92

US4811814AMar 14, 1989

Measuring device for a seismic profile within a well-bore

ELF AQUITAINE24 citations92

US4724087AFeb 9, 1988

Device for carrying out extraction-separation-cracking processes by supercritical fluids

ELF AQUITAINE30 citations92

US4670862AJun 2, 1987

Apparatus for producing geophysical measurements in a borehole

ELF AQUITAINE32 citations92

US4643616AFeb 17, 1987

Device for positioning, activating and connecting modules of a sub-sea oil production station

ELF AQUITAINE34 citations92

US4620944ANov 4, 1986

Macromolecular material of ionic conduction for producing electrolytes or electrodes

ELF AQUITAINE26 citations92

US4595512AJun 17, 1986

Process for the preparation of microemulsions between an acid phase and a hyrdophobic phase

ELF AQUITAINE33 citations92

US4120655AOct 17, 1978

Method for the inhibition of corrosion of ferrous metals in an aqueous medium

ELF AQUITAINE51 citations92

US6011094AJan 4, 2000

Process for the preparation of bitumen-polymer compositions containing a crosslinked elastomer and a functionalized olefinic polymer

ELF AQUITAINE48 citations91

US5877389AMar 2, 1999

Process for the oxidative decomposition of organic compounds present in aqueous effluents

ELF AQUITAINE34 citations91

US5858489AJan 12, 1999

System for thermal and/or acoustic insulation of a tube

ELF AQUITAINE25 citations91

US5534239AJul 9, 1996

Process for the synthesis of a silica enriched crystalline aluminosilicate having the offretite structure, the aluminosilicate obtained and its use as a catalyst for the conversion of hydrocarbons

ELF AQUITAINE51 citations91

US5393511AFeb 28, 1995

Synthesis of zeolites of faujasite structure

ELF AQUITAINE23 citations91

US5283219AFeb 1, 1994

Active composite and its use as reaction medium

ELF AQUITAINE22 citations91

Showing the top 50 of 496 patents by PatentIndex Score.

ELF AQUITAINE

Top patents by PatentIndex Score

Method and device for making geophysical measurements within a wellbore

Automatic seismic pattern recognition method

Polycarbon sulphide polymers

Ionically conductive material

Device for ionophoresis comprising at least a membrane electrode assembly, for the transcutaneous administration of active principles to a subject

Oil-well installation fitted with a bottom-well electric pump

System for multidirectional information transmission between at least two units of a drilling assembly

Dynamometric measuring assembly for a drill pipe equipped with means of radiotransmission

Method and equipment for drilling control by vibration analysis

Method for rapid and uniform heating of a transparent and/or reflecting multilayer optical system with polymeric solid electrolyte

Novel macromolecular material for use in realizing electrolytes and/or electrodes

Fractionation process for mixtures by elution chromatography with liquid in supercritical state and installation for its operation

Process for the catalytic incineration of residual gases containing a low content of at least one sulfur compound selected from COS, CS2 and the mercaptans and possibility at least one member of the group

Stabilizer-reamer for drilling an oil well

Method and device for cutting a multilayer assembly composed of a plurality of thin films and comprising a thin film electrochemical generator or a component part thereof

Liquid absorbing acidic gases and use thereof of in deacidification of gases

Novel macromolecular material for use in realizing electrolytes and/or electrodes

Prevention of inflow of water into wells or shafts which have already been drilled or are being drilled

Subsea station

Reentry system for subsea well apparatus

Method for obtaining a representation of a geological structure

Process and device for filling chromatography columns

Method for desulphurising a gaseous mixture containing H2 S and SO.sub.

Removal of sulfur compounds in claus type residual gases with sulfur recovery

Process for the production of sulphur from at least one sour gas containing hydrogen sulphide and a fuel effluent and thermal reactor

Process for denitrogenation of a feedstock of a liquefied mixture of hydrocarbons consisting chiefly of methane and containing at least 2 mol % of nitrogen

Method for rapid and uniform heating of a multilayer assembly comprising at least one thin layer based on an ion-conducting macromolecular material interleaved between two structures with high electronic conduction

Method of plotting surfaces in a 3D volume

Method of synthesis of sulphonylimides

Electromagnetic source integrated into an element of a well casing

Process for removing sulphur compounds from a residual gas

Process for automatic plotting and assistance interpretation of seismic cross-sections in particular using image analysis techniques

Process for the preparation of organic disulphides and polysulphides

Cyclic phosphonites

Cryogenic process for desulphurization and gasoline removal of a gaseous mixture comprising methane containing H2 S and hydrocarbons having 2 carbon atoms and higher

Method of assembling components of an electrochemical generator using thin films of lithium

Catalytic process for the production of sulphur from a gas containing H.sub. S

Measuring device for a seismic profile within a well-bore

Device for carrying out extraction-separation-cracking processes by supercritical fluids

Apparatus for producing geophysical measurements in a borehole

Device for positioning, activating and connecting modules of a sub-sea oil production station

Macromolecular material of ionic conduction for producing electrolytes or electrodes

Process for the preparation of microemulsions between an acid phase and a hyrdophobic phase

Method for the inhibition of corrosion of ferrous metals in an aqueous medium

Process for the preparation of bitumen-polymer compositions containing a crosslinked elastomer and a functionalized olefinic polymer

Process for the oxidative decomposition of organic compounds present in aqueous effluents

System for thermal and/or acoustic insulation of a tube

Process for the synthesis of a silica enriched crystalline aluminosilicate having the offretite structure, the aluminosilicate obtained and its use as a catalyst for the conversion of hydrocarbons

Synthesis of zeolites of faujasite structure

Active composite and its use as reaction medium