| Patents for C10G 21 - Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (2,651) |
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| 02/15/1984 | EP0100401A1 Recovery of solvent in hydrocarbon processing systems |
| 02/07/1984 | US4430208 Method for the solvent extraction of polychlorinated biphenyls |
| 02/07/1984 | US4430204 Removal of surfactants from hydrocarbons with alcohol |
| 01/31/1984 | US4428829 Process for simultaneous separation of aromatics from heavy and light hydrocarbon streams |
| 01/24/1984 | US4427531 Process for deasphaltenating cat cracker bottoms and for production of anisotropic pitch |
| 01/18/1984 | EP0098811A1 Method of decontaminating electro-mechanic apparatus from polychlorobiphenyl |
| 01/18/1984 | EP0098580A2 Process for the separation of aromatic hydrocarbons from petroleum fractions with heat recovery |
| 01/18/1984 | EP0098359A2 Recovery for solvent from a hydrocarbon extract |
| 01/17/1984 | US4426361 Extraction zone tray |
| 01/17/1984 | US4425949 Process for removing undesirable substances from electrical devices |
| 01/17/1984 | CA1160588A1 Solvent extraction process for rerefining used lubricating oil |
| 01/10/1984 | US4425225 Reducing metal content of oil feeds |
| 01/04/1984 | EP0097381A2 Process for separating an ethylenically unsaturated hydrocarbon from a hydrocarbon mixture; process for separating close boiling liquids; process for inhibiting polymerization of styrene |
| 12/28/1983 | EP0097055A2 Process for purifying hydrocarbonaceous oils |
| 12/27/1983 | US4422923 Process for recovering solvents from solvent-containing hydrocarbon phases in hydrocarbon raffination systems |
| 12/20/1983 | US4421640 N-(2-hydroxyethyl)-2-pyrrolidone and water |
| 12/20/1983 | US4421639 Multistage solvent extraction |
| 12/08/1983 | WO1983004259A1 Improved method for the solvent extraction of polychlorinated biphenyls |
| 12/06/1983 | US4419227 Recovery of solvent from a hydrocarbon extract |
| 12/06/1983 | US4419226 Recovery of aromatic hydrocarbons and a non-aromatic raffinate stream from a hydrocarbon charge stock |
| 11/22/1983 | CA1157409A1 Desulfurization, demetalation and denitrogenation of coal |
| 11/08/1983 | US4414105 Process for deasphalting an asphaltene containing hydrocarbon charge |
| 11/01/1983 | US4412915 Specific gravity responsive control of BMCI in aromatic extract oils |
| 10/11/1983 | US4409092 Combination process for upgrading oil products of coal, shale oil and crude oil to produce jet fuels, diesel fuels and gasoline |
| 09/27/1983 | US4406780 Separation and oxygen-alkylation of phenols from phenol-containing hydrocarbonaceous streams |
| 09/27/1983 | US4406778 Spent oil recovery process |
| 09/20/1983 | US4405448 Process for removing halogenated aliphatic and aromatic compounds from petroleum products |
| 09/14/1983 | EP0088603A1 Process for solvent dewaxing hydrocarbon oil using methyl tertiary butyl ether |
| 09/14/1983 | EP0088458A2 Process for the separation of a liquid mixture |
| 09/07/1983 | EP0087965A2 Process for separation of solids from liquid hydrocarbons |
| 09/07/1983 | EP0087832A1 Process for the removal of aromatic compounds from hydrocarbons |
| 09/06/1983 | US4402824 Ketone solvent, precipitation |
| 08/30/1983 | USRE31363 Solvent extraction and separation |
| 08/30/1983 | US4401560 Process for the separation of aromatic hydrocarbons from petroleum fractions with heat recovery |
| 08/30/1983 | US4401517 Vapor-liquid extractive distillation with dialkyl sulfone/water combination |
| 08/24/1983 | EP0086576A1 Process for the solvent deasphalting of asphaltene-containing hydrocarbons |
| 08/24/1983 | EP0086293A1 Method for selectively removing basic nitrogen compounds from lube oils using transition metal halides and transition metal tetrafluoroborates |
| 08/09/1983 | CA1151677A1 Process and plant for the removal of acidic components |
| 08/02/1983 | US4396492 Polycarboxylic acid esters |
| 07/26/1983 | US4395330 Process for solvent deasphalting of residual hydrocarbon oils |
| 07/19/1983 | CA1150179A1 Recovery of solvent in hydrocarbon extraction system |
| 07/19/1983 | CA1150176A1 Solvent extraction of hydrocarbon oils |
| 06/28/1983 | US4390418 Controlling vaporization of n-methyl-2-pyrrolidone during early low pressure stages by circulation of vapors from last high pressure stage; heat exchanging |
| 06/07/1983 | US4387018 Method of removing polychlorinated biphenyl from oil |
| 05/11/1983 | EP0078699A2 Method of retarding corrosion in a petroleum treatment or processing operation |
| 05/10/1983 | US4382855 Process for removal of hydroxy- and/or mercapto-substituted hydrocarbons from coal liquids |
| 05/04/1983 | EP0077977A2 Process for removal of hydroxy and/or mercapto-substituted hydrocarbons from coal liquids |
| 04/26/1983 | US4381234 Solvent extraction production of lube oil fractions |
| 04/12/1983 | CA1144513A1 Closed-loop vacuum fractionation process |
| 04/12/1983 | CA1144504A1 Process for recovering solvents from solvent- containing hydrocarbon phases in hydrocarbon raffination systems |
| 04/05/1983 | US4379047 Additive for glycol solvent used in aromatic extraction |
| 03/22/1983 | US4377471 Method for removing polychlorinated biphenyls from transformer oil |
| 03/16/1983 | EP0073945A1 Process for obtaining pure aromatics |
| 03/16/1983 | EP0073860A1 Desulfurization, demetalation and denitrogenation of coal |
| 03/02/1983 | EP0072873A1 Refining process for producing increased yield of distillation from heavy petroleum feedstocks |
| 02/16/1983 | EP0072243A2 Deasphaltenating cat cracker bottoms and production of pitch carbon artifacts |
| 02/16/1983 | EP0072242A2 Production of carbon artifact feedstocks |
| 02/08/1983 | CA1140886A1 Extraction process |
| 02/01/1983 | US4371427 Extractive distillation |
| 12/21/1982 | US4364821 Countercurrent liquid-liquid extraction of hydrocarbons |
| 12/14/1982 | US4363717 Upgrading to motor fuels using a metal halide catalyst |
| 12/14/1982 | CA1137435A1 Sulphur extraction |
| 11/24/1982 | EP0065194A1 Process for obtaining a conjugated diolefine from a C4-C5 hydrocarbon mixture |
| 11/23/1982 | US4360448 Organonitrogen ion exchange compound |
| 11/23/1982 | US4360420 Distillation and solvent extraction process for rerefining used lubricating oil |
| 11/23/1982 | CA1136164A1 Process for the separation of dienic and/or aromatic hydrocarbons present in hydrocarbon fractions |
| 10/12/1982 | US4353794 Process for the solvent extraction of aromatics and the recovery of an aromatics-free non-aromatic product from a hydrocarbon feedstock |
| 10/12/1982 | US4353793 Method for removing polyhalogenated hydrocarbons from nonpolar organic solvent solutions |
| 10/05/1982 | CA1132934A1 Process for deasphalting hydrocarbon oils |
| 09/28/1982 | US4351812 Hydrolysis of carbon oxysulfide with morpholines and piperazines |
| 08/24/1982 | CA1130232A1 Solvent dewaxing wax-containing hydrocarbon oils using dewaxing aid |
| 08/03/1982 | US4342646 Comprising n-methyl-2-pyrrolidone solvent from raffinate |
| 07/07/1982 | EP0055627A1 Removal of metallic contaminants from petroleum fractions |
| 07/06/1982 | US4338183 Method of solvent extraction of coal by a heavy oil |
| 06/22/1982 | US4336106 Apparatus for the solvent extraction of aromatic hydrocarbons from a hydrocarbon mixture |
| 06/15/1982 | US4334983 Multistate drying under pressure to generate steam of high enough quality to be used for stripping solvents |
| 06/15/1982 | US4334605 Technique for handling and treating heavy waste hydrocarbons |
| 06/09/1982 | EP0053535A1 De-asphalting process with a solvent of residual hydrocarbon oils |
| 06/08/1982 | US4333824 Refining highly aromatic lube oil stocks |
| 06/08/1982 | US4333823 Organic amine additive to sulfolane-type process |
| 06/01/1982 | US4332676 Removal of basic nitrogen compounds from organic streams |
| 06/01/1982 | US4332675 Removal of basic nitrogen compounds from organic streams |
| 05/25/1982 | CA1124038A1 Hydrolysis of carbon oxysulfide with morpholines and piperazines |
| 05/04/1982 | US4328092 Solvent extraction of hydrocarbon oils |
| 04/28/1982 | EP0050381A1 Process for the simultaneous separation in aromatics and non-aromatics of a heavy hydrocarbon stream and a light hydrocarbon stream |
| 04/20/1982 | US4325818 Dual solvent refining process |
| 04/20/1982 | CA1122152A1 Extracting aromatic hydrocarbons from mixtures containing same |
| 04/13/1982 | US4324651 Solvent extraction of mineral oil with methanol |
| 03/23/1982 | US4321127 Coal liquefaction using liquid clathrates |
| 03/10/1982 | EP0046805A1 Multidentate macromolecular complex salt clathrates |
| 03/09/1982 | CA1119544A1 Process for increasing the fuel yield of coal liquefaction products by extraction of asphaltenes, resins and aromatic compounds from said coal liquefaction products |
| 02/23/1982 | US4316796 Solvent extraction |
| 01/26/1982 | CA1117064A1 Recovery and recycle of dewaxing aid |
| 01/19/1982 | US4311583 N-methyl-2-pyrrolidone, refining |
| 01/13/1982 | EP0043685A1 Method of separating aromatic and nonaromatic hydrocarbons in mixed hydrocarbon feeds |
| 01/06/1982 | EP0043267A1 Method of separating aromatic and nonaromatic hydrocarbons in mixed hydrocarbon feeds |
| 12/29/1981 | CA1115230A1 Conversion of asphaltene-containing charge stocks and product separation process |
| 12/22/1981 | US4306945 Extracting aromatic hydrocarbons from mixtures containing same |
| 12/22/1981 | CA1114764A1 Treatment of pyrolysis fuel oil |
| 12/15/1981 | US4305814 Energy efficient process for separating hydrocarbonaceous materials into various fractions |