Assignee

SNAM PROGETTI

IT307 patents

Top patents by PatentIndex Score

US4410501AOct 18, 1983

Preparation of porous crystalline synthetic material comprised of silicon and titanium oxides

SNAM PROGETTI518 citations98

US5932090AAug 3, 1999

Process for the conversion of heavy crude oils and distillation residues to distillates

SNAM PROGETTI100 citations96

US5430219AJul 4, 1995

Integrated process for producing olefins from methane-containing gas mixtures

SNAM PROGETTI101 citations96

US4666692AMay 19, 1987

Silica-based synthetic material containing titanium in the crystal lattice and process for its preparation

SNAM PROGETTI75 citations95

US4657571AApr 14, 1987

Process for the recovery of heavy constituents from hydrocarbon gaseous mixtures

SNAM PROGETTI109 citations95

US5449440ASep 12, 1995

Process for separating alcohols from mixtures of alcohols, water and other compounds

SNAM PROGETTI154 citations94

US5032618AJul 16, 1991

Process for the production of hydrocarbons with a high octane number starting from mixtures of n-butane/isobutane such as field butanes

SNAM PROGETTI25 citations92

US5856585AJan 5, 1999

Process of catalytic partial oxidation of natural gas in order to obtain synthesis gas and formaldehyde

SNAM PROGETTI50 citations92

US5414182AMay 9, 1995

Process for activating catalyst percursors for the dehydrogenation of C.sub. -C5 paraffins, and a catalytic composition activated by the process

SNAM PROGETTI23 citations92

US5308822AMay 3, 1994

Process for activating catalyst precursors for the dehydrogenation of C2-C5 paraffins, and a catalytic composition activated by the process

SNAM PROGETTI24 citations92

US5143886ASep 1, 1992

Catalytic composition for the dehydrogenation of C2 -C5 paraffins

SNAM PROGETTI26 citations92

US4971607ANov 20, 1990

Cryogenic process for the removal of acidic gases from mixtures of gases by solvent

SNAM PROGETTI23 citations92

US4687654AAug 18, 1987

Process for preparing ZSM-5, large pore mordenite and ZSM-35

SNAM PROGETTI25 citations92

US4656016AApr 7, 1987

Silica-based synthetic materials containing boron in the crystal lattice and processes for their preparation

SNAM PROGETTI29 citations92

US4545965AOct 8, 1985

Process of selective separation of hydrogen sulfide from gaseous mixtures containing also carbon dioxide

SNAM PROGETTI59 citations92

US4513100AApr 23, 1985

Catalytic system for producing mixtures of methanol and higher alcohols

SNAM PROGETTI28 citations92

US4317787AMar 2, 1982

Device for distributing a liquid in thin-film form in vertical heat-exchangers

SNAM PROGETTI42 citations92

US4317786AMar 2, 1982

Apparatus for distributing a liquid in film-form on the interior walls of vertical tubes

SNAM PROGETTI33 citations92

US4252771AFeb 24, 1981

Methanation reactor

SNAM PROGETTI92 citations92

US6875411B2Apr 5, 2005

Process for the production of hydrogen

SNAM PROGETTI50 citations91

US6833013B1Dec 21, 2004

Process for the production of synthesis gas

SNAM PROGETTI19 citations91

US6534685B1Mar 18, 2003

Liquid mixture consisting of diesel gas oils and oxygenated compounds

SNAM PROGETTI24 citations91

US6433238B1Aug 13, 2002

Process for the production of hydrocarbons with a high octane number by the selective dimerization of isobutene

SNAM PROGETTI19 citations91

US6118037ASep 12, 2000

Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams

SNAM PROGETTI48 citations91

US6111162AAug 29, 2000

Process for removing oxygenated contaminants from hydrocarbon streams

SNAM PROGETTI28 citations91

US6107535AAug 22, 2000

Process for removing nitrogenated and sulfurated contaminants from hydrocarbon streams

SNAM PROGETTI46 citations91

US5723687AMar 3, 1998

Process for the joint production of ethers and hydrocarbons with a high octane number

SNAM PROGETTI21 citations91

US5096599AMar 17, 1992

Process for purifying the effluent from urea production plants

SNAM PROGETTI40 citations91

US6031143AFeb 29, 2000

Process for the production of styrene

SNAM PROGETTI34 citations90

US6010669AJan 4, 2000

Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea

SNAM PROGETTI33 citations90

US6011191AJan 4, 2000

Process for the production of hydrocarbons with a high octane number by the selective dimerization of isobutene

SNAM PROGETTI30 citations90

US4026817AMay 31, 1977

Method for the preparation in a continuous way of water/oil emulsions and apparatus suitable therefor

SNAM PROGETTI86 citations90

US5656243AAug 12, 1997

Fluidized bed reactor and process for performing reactions therein

SNAM PROGETTI34 citations89

US5336655AAug 9, 1994

Catalytic system and process for producing synthesis gas by reforming light hydrocarbons with CO2

SNAM PROGETTI22 citations89

US4479741AOct 30, 1984

Device for laying underground or digging up subsea conduits

SNAM PROGETTI70 citations89

US4475005AOct 2, 1984

Process for preparing tertiary alkyl ethers

SNAM PROGETTI31 citations89

US4072671AFeb 7, 1978

Method for extracting phenols and oligosaccharides from vegetable tissues

SNAM PROGETTI49 citations89

US3979461ASep 7, 1976

Process for the preparation of methyl tert-butyl ether

SNAM PROGETTI46 citations89

US5849952ADec 15, 1998

Urea production process with high energy efficiency

SNAM PROGETTI31 citations88

US4556801ADec 3, 1985

Method for utilizing wind energy for autonomous electricity production

SNAM PROGETTI48 citations88

US4252466AFeb 24, 1981

Adjustable apparatus for supporting a pipe, laid on a deep sea bed, at a depression in the sea bed

SNAM PROGETTI36 citations88

US6362385B1Mar 26, 2002

Process for obtaining light olefins by the dehydrogenation of the corresponding paraffins

SNAM PROGETTI30 citations87

US4899813AFeb 13, 1990

Process and apparatus for the synthesis of urea and material used in it

SNAM PROGETTI39 citations87

US4560188ADec 24, 1985

Thermally insulated pipe for the construction of underwater pipelines

SNAM PROGETTI42 citations86

US4453956AJun 12, 1984

Recovering condensables from natural gas

SNAM PROGETTI43 citations86

Showing the top 50 of 307 patents by PatentIndex Score.

SNAM PROGETTI

Top patents by PatentIndex Score

Preparation of porous crystalline synthetic material comprised of silicon and titanium oxides

Process for the conversion of heavy crude oils and distillation residues to distillates

Integrated process for producing olefins from methane-containing gas mixtures

Silica-based synthetic material containing titanium in the crystal lattice and process for its preparation

Process for the recovery of heavy constituents from hydrocarbon gaseous mixtures

Process for separating alcohols from mixtures of alcohols, water and other compounds

Process for producing methanol form synthesis gas, in the liquid phase

Liquid distributor for thin-film, tube-bundle apparatus

Process for the preparation of aromatic carbonates

Liquid distributor for thin-film, tube-bundle apparatus

Process for the production of dimethyl ether

Process for the production of hydrocarbons with a high octane number starting from mixtures of n-butane/isobutane such as field butanes

Process of catalytic partial oxidation of natural gas in order to obtain synthesis gas and formaldehyde

Process for activating catalyst percursors for the dehydrogenation of C.sub. -C5 paraffins, and a catalytic composition activated by the process

Process for activating catalyst precursors for the dehydrogenation of C2-C5 paraffins, and a catalytic composition activated by the process

Catalytic composition for the dehydrogenation of C2 -C5 paraffins

Cryogenic process for the removal of acidic gases from mixtures of gases by solvent

Process for preparing ZSM-5, large pore mordenite and ZSM-35

Silica-based synthetic materials containing boron in the crystal lattice and processes for their preparation

Process of selective separation of hydrogen sulfide from gaseous mixtures containing also carbon dioxide

Catalytic system for producing mixtures of methanol and higher alcohols

Device for distributing a liquid in thin-film form in vertical heat-exchangers

Apparatus for distributing a liquid in film-form on the interior walls of vertical tubes

Methanation reactor

Process for the production of hydrogen

Process for the production of synthesis gas

Liquid mixture consisting of diesel gas oils and oxygenated compounds

Process for the production of hydrocarbons with a high octane number by the selective dimerization of isobutene

Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams

Process for removing oxygenated contaminants from hydrocarbon streams

Process for removing nitrogenated and sulfurated contaminants from hydrocarbon streams

Process for the joint production of ethers and hydrocarbons with a high octane number

Process for purifying the effluent from urea production plants

Process for the production of styrene

Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea

Process for the production of hydrocarbons with a high octane number by the selective dimerization of isobutene

Method for the preparation in a continuous way of water/oil emulsions and apparatus suitable therefor

Fluidized bed reactor and process for performing reactions therein

Catalytic system and process for producing synthesis gas by reforming light hydrocarbons with CO2

Device for laying underground or digging up subsea conduits

Process for preparing tertiary alkyl ethers

Method for extracting phenols and oligosaccharides from vegetable tissues

Process for the preparation of methyl tert-butyl ether

Urea production process with high energy efficiency

Method for utilizing wind energy for autonomous electricity production

Adjustable apparatus for supporting a pipe, laid on a deep sea bed, at a depression in the sea bed

Process for obtaining light olefins by the dehydrogenation of the corresponding paraffins

Process and apparatus for the synthesis of urea and material used in it

Thermally insulated pipe for the construction of underwater pipelines

Recovering condensables from natural gas