Assignee
SNAM PROGETTI
307 granted patents·8 pending applications·5,641 citations·filing 1970–2016
Top patents by PatentIndex Score
315 records- 0197US5430219AIntegrated process for producing olefins from methane-containing gas mixturesSNAM PROGETTI·Filed 1993·Granted Jul 4, 1995·101 cites·15 claims
- 0297US4666692ASilica-based synthetic material containing titanium in the crystal lattice and process for its preparationSNAM PROGETTI·Filed 1985·Granted May 19, 1987·75 cites·6 claims
- 0397US4410501APreparation of porous crystalline synthetic material comprised of silicon and titanium oxidesSNAM PROGETTI·Filed 1982·Granted Oct 18, 1983·518 cites·7 claims
- 0496US4657571AProcess for the recovery of heavy constituents from hydrocarbon gaseous mixturesSNAM PROGETTI·Filed 1985·Granted Apr 14, 1987·109 cites·18 claims
- 0595US5449440AProcess for separating alcohols from mixtures of alcohols, water and other compoundsSNAM PROGETTI·Filed 1993·Granted Sep 12, 1995·154 cites·12 claims
- 0695US4182726AProcess for the preparation of aromatic carbonatesSNAM PROGETTI·Filed 1977·Granted Jan 8, 1980·99 cites·4 claims
- 0794US5032618AProcess for producing methanol form synthesis gas, in the liquid phaseSNAM PROGETTI·Filed 1989·Granted Jul 16, 1991·70 cites·17 claims
- 0894US4098809AProcess for the production of dimethyl etherSNAM PROGETTI·Filed 1975·Granted Jul 4, 1978·34 cites·4 claims
- 0993US4252771AMethanation reactorSNAM PROGETTI·Filed 1978·Granted Feb 24, 1981·92 cites·3 claims
- 1092US5932090AProcess for the conversion of heavy crude oils and distillation residues to distillatesSNAM PROGETTI·Filed 1996·Granted Aug 3, 1999·100 cites·10 claims
- 1191US4656016ASilica-based synthetic materials containing boron in the crystal lattice and processes for their preparationSNAM PROGETTI·Filed 1984·Granted Apr 7, 1987·29 cites·7 claims
- 1291US4199537ALiquid distributor for thin-film, tube-bundle apparatusSNAM PROGETTI·Filed 1978·Granted Apr 22, 1980·49 cites·4 claims
- 1391US3979461AProcess for the preparation of methyl tert-butyl etherSNAM PROGETTI·Filed 1975·Granted Sep 7, 1976·46 cites·2 claims
- 1490US6875411B2Process for the production of hydrogenSNAM PROGETTI·Filed 2001·Granted Apr 5, 2005·50 cites·21 claims
- 1590US3980690AProcess for the carboxylation of alcohols in heterogeneous phaseSNAM PROGETTI·Filed 1974·Granted Sep 14, 1976·26 cites·4 claims
- 1689US6107535AProcess for removing nitrogenated and sulfurated contaminants from hydrocarbon streamsSNAM PROGETTI·Filed 1997·Granted Aug 22, 2000·46 cites·7 claims
- 1789US4026817AMethod for the preparation in a continuous way of water/oil emulsions and apparatus suitable thereforSNAM PROGETTI·Filed 1975·Granted May 31, 1977·86 cites·4 claims
- 1888US6897345B2Process for the production of hydrocarbons with a high octane number starting from mixtures of n-butane/isobutane such as field butanesSNAM PROGETTI·Filed 2003·Granted May 24, 2005·25 cites·5 claims
- 1988US5856585AProcess of catalytic partial oxidation of natural gas in order to obtain synthesis gas and formaldehydeSNAM PROGETTI·Filed 1994·Granted Jan 5, 1999·50 cites·6 claims
- 2088US4479741ADevice for laying underground or digging up subsea conduitsSNAM PROGETTI·Filed 1982·Granted Oct 30, 1984·70 cites·9 claims
- 2188US4312310APollution-preventing and driving device for internal combustion enginesSNAM PROGETTI·Filed 1979·Granted Jan 26, 1982·108 cites·7 claims
- 2287US6534685B1Liquid mixture consisting of diesel gas oils and oxygenated compoundsSNAM PROGETTI·Filed 2000·Granted Mar 18, 2003·24 cites·10 claims
- 2387US4314077AMethod for the production of urea and purification of waterSNAM PROGETTI·Filed 1980·Granted Feb 2, 1982·23 cites·2 claims
- 2486US7473668B2Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbonsSNAM PROGETTI·Filed 2002·Granted Jan 6, 2009·17 cites·22 claims
- 2586US5308822AProcess for activating catalyst precursors for the dehydrogenation of C2-C5 paraffins, and a catalytic composition activated by the processSNAM PROGETTI·Filed 1993·Granted May 3, 1994·24 cites·7 claims
- 2686US4556801AMethod for utilizing wind energy for autonomous electricity productionSNAM PROGETTI·Filed 1982·Granted Dec 3, 1985·48 cites·9 claims
- 2786US4317787ADevice for distributing a liquid in thin-film form in vertical heat-exchangersSNAM PROGETTI·Filed 1980·Granted Mar 2, 1982·42 cites·7 claims
- 2886US4134939ALiquid distributor for thin-film, tube-bundle apparatusSNAM PROGETTI·Filed 1976·Granted Jan 16, 1979·36 cites·1 claims
- 2986US4113790AProcess for the preparation of linear alpha-olefin oligomers, subsequent hydrogenation thereof and saturated products thus obtainedSNAM PROGETTI·Filed 1977·Granted Sep 12, 1978·20 cites·6 claims
- 3086US4107417AProcess for the production of polymers and copolymers of isobutyleneSNAM PROGETTI·Filed 1974·Granted Aug 15, 1978·30 cites·5 claims
- 3186US4071567AProcess for the production of methyl tert-butyl etherSNAM PROGETTI·Filed 1976·Granted Jan 31, 1978·27 cites·6 claims
- 3285US6500999B2Process for the production of hydrocarbons with a high octane number by means of the selective dimerization of isobutene with acid catalystsSNAM PROGETTI·Filed 2001·Granted Dec 31, 2002·18 cites·13 claims
- 3385US6031143AProcess for the production of styreneSNAM PROGETTI·Filed 1998·Granted Feb 29, 2000·34 cites·21 claims
- 3485US4718986AProcess for producting high purity butene-1 with a low energy consumptionSNAM PROGETTI·Filed 1986·Granted Jan 12, 1988·62 cites·15 claims
- 3585US4545965AProcess of selective separation of hydrogen sulfide from gaseous mixtures containing also carbon dioxideSNAM PROGETTI·Filed 1984·Granted Oct 8, 1985·59 cites·4 claims
- 3685US4513100ACatalytic system for producing mixtures of methanol and higher alcoholsSNAM PROGETTI·Filed 1982·Granted Apr 23, 1985·28 cites·3 claims
- 3784US4235816AIntegrated ammonia-urea processSNAM PROGETTI·Filed 1979·Granted Nov 25, 1980·18 cites·3 claims
- 3884US4233140AProcess for regenerating exhausted oilsSNAM PROGETTI·Filed 1978·Granted Nov 11, 1980·48 cites·9 claims
- 3983US4013590AProcess for preparing materials having improved mechanical and thermal properties and materials obtained therebySNAM PROGETTI·Filed 1974·Granted Mar 22, 1977·19 cites·9 claims
- 4082US4976849AFractionation process for gaseous hydrocarbon mixtures with a high acid gas contentSNAM PROGETTI·Filed 1988·Granted Dec 11, 1990·67 cites·34 claims
- 4181US6362385B1Process for obtaining light olefins by the dehydrogenation of the corresponding paraffinsSNAM PROGETTI·Filed 1998·Granted Mar 26, 2002·30 cites·8 claims
- 4281US4072671AMethod for extracting phenols and oligosaccharides from vegetable tissuesSNAM PROGETTI·Filed 1976·Granted Feb 7, 1978·49 cites·10 claims
- 4381US3957898ASynthetic lubricating oils from thermal cracking or polymers having very high viscositySNAM PROGETTI·Filed 1974·Granted May 18, 1976·30 cites·3 claims
- 4480US5849952AUrea production process with high energy efficiencySNAM PROGETTI·Filed 1997·Granted Dec 15, 1998·31 cites·1 claims
- 4580US4320103AFlexible integrated method for the production of ammonia and ureaSNAM PROGETTI·Filed 1980·Granted Mar 16, 1982·24 cites·2 claims
- 4680US4138434AIntegrated ammonia-urea producing process, for the production of ureaSNAM PROGETTI·Filed 1977·Granted Feb 6, 1979·22 cites·4 claims
- 4780US3963586AExtractive distillation of a dimethyl carbonate feed with waterSNAM PROGETTI·Filed 1974·Granted Jun 15, 1976·15 cites·1 claims
- 4879US4453956ARecovering condensables from natural gasSNAM PROGETTI·Filed 1982·Granted Jun 12, 1984·43 cites·3 claims
- 4979US4317786AApparatus for distributing a liquid in film-form on the interior walls of vertical tubesSNAM PROGETTI·Filed 1980·Granted Mar 2, 1982·33 cites·9 claims
- 5079US4101281ARadial-flow reactor for the synthesis of ammonia with production of high thermal-level steamSNAM PROGETTI·Filed 1976·Granted Jul 18, 1978·20 cites·3 claims
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