| Patents for C10G 21 - Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (2,651) |
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| 09/17/1997 | CN1159767A Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 09/03/1997 | EP0792928A2 Process for the recovery of pure aromatics from reforming gasoline and apparatus for carrying out this process |
| 08/26/1997 | US5660717 Abatement of hydrolyzable cations in crude oil |
| 08/13/1997 | EP0762937A4 A process for improving the effectiveness of a process catalyst |
| 08/06/1997 | EP0772485A4 Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 08/03/1997 | CA2196585A1 Procedure for generating pure aromatics from reformed gasoline and device for implementing the procedure |
| 07/23/1997 | EP0784645A1 Process for producing oligoamines or polyamines |
| 07/15/1997 | US5648305 Process for improving the effectiveness of process catalyst |
| 07/02/1997 | CN1153201A Method and apparatus for extraction of aromatic compound from hydrocarbon material |
| 06/19/1997 | WO1997021786A1 Method of and apparatus for producing power in solvent deasphalting units |
| 05/14/1997 | EP0772485A1 Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 04/29/1997 | US5625117 Fuel gas stripping of rich amine to remove hydrocarbons |
| 04/17/1997 | WO1997013567A1 Extraction method |
| 04/17/1997 | CA2231657A1 Extraction method |
| 04/09/1997 | EP0767156A1 Improved method and composition for sweetening of liquefied petroleum gas |
| 04/01/1997 | US5616238 Solvent extraction of hydrocarbon oils producing an increased yield of improved quality raffinate |
| 03/19/1997 | EP0763076A1 Process for reducing the level of sulfur in a refinery process stream and/or crude oil |
| 03/19/1997 | EP0762937A1 A process for improving the effectiveness of a process catalyst |
| 03/13/1997 | WO1997009291A1 Addition of co-solvents to furfural for aromatic extractions |
| 03/13/1997 | CA2226168A1 Addition of co-solvents to furfural for aromatic extractions |
| 03/12/1997 | EP0761801A1 Process and apparatus for the extraction of aromatic compounds from a hydrocarbon charge |
| 02/27/1997 | WO1997007082A1 Fuel gas stripping of rich amine to remove hydrocarbons |
| 02/19/1997 | CN1143383A Removing contaminants from oil |
| 02/05/1997 | EP0757091A1 Procedure used to generate electric energy from used oils and other petroleum residues |
| 01/15/1997 | EP0646037B1 Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery |
| 01/09/1997 | WO1997000926A1 Method for preparing lubricating oils |
| 12/18/1996 | EP0748861A1 Abatement of hydrogen sulfide with an aldehyde ammonia trimer |
| 12/10/1996 | US5582714 Process for the removal of sulfur from petroleum fractions |
| 12/04/1996 | EP0745113A1 Removal of contaminants from oil |
| 10/30/1996 | EP0739972A2 Use of olefinic imines to scavenge sulphur species |
| 10/22/1996 | US5567213 Use of olefinic imines to scavenge sulfur species |
| 10/22/1996 | US5567212 Use of olefinic imines to scavenge sulfur species |
| 10/08/1996 | US5563315 Extracting mixture with lean solvent stream, withdrawing raffinate stream comprising nonaromatics and rich solvent stream comprising aromatics, separately mixing solute stream with raffinate and rich solvent streams, separating |
| 10/05/1996 | CA2173282A1 Process for removing aromatics from hydrocarbon vapour streams |
| 10/02/1996 | EP0735126A2 Abatement of hydrolyzable cations in crude oil |
| 09/28/1996 | CA2172684A1 Abatement of hydrolyzable cations in crude oil |
| 09/18/1996 | EP0731830A1 Purification of oil |
| 09/03/1996 | US5552036 Chemical reduction of crude oils using reducing agents |
| 08/14/1996 | EP0726460A2 A method of characterizing hydrocarbon feeds and products using infra-red spectra |
| 06/05/1996 | CN1123825A Deacidifying process for petroleum cut fraction with amino-alcohol |
| 06/04/1996 | US5523023 Water treatment/cleaning composition comprising polyaspartic acid or derivatives thereof and phosphonic acid |
| 05/15/1996 | EP0711819A2 Process for recovering organic sulfur compounds from fuel oil and equipment therefor |
| 05/15/1996 | CN1031800C Method for separating petroleum heavy oil |
| 04/24/1996 | CN1121103A Method of refining anthracene, phenanthrene and carbazole |
| 04/18/1996 | WO1996011225A1 Process for producing oligoamines or polyamines |
| 04/11/1996 | WO1996010618A1 Electrodynamic-chemical processing for beneficiation of petroleum residue |
| 04/11/1996 | DE4435688A1 Verfahren zur Herstellung von Oligoaminen oder Polyaminen Process for the preparation of oligoamines or polyamines |
| 02/29/1996 | DE4427748C1 Cleaning transformers contaminated with PCB |
| 02/27/1996 | US5494572 Desulfurization and denitration of light oil by extraction |
| 02/08/1996 | WO1996003198A1 Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 02/08/1996 | CA2195631A1 Desulfurization of incondensible gases from the vacuum distillation of crude oil |
| 01/02/1996 | US5480860 Methods for reducing sulfides in sewage gas |
| 12/24/1995 | CA2148849A1 Method of treating sour gas and liquid hydrocarbons |
| 12/19/1995 | US5476987 Solvent extraction using sulfolane and 1,3-dimethylimidazolidinone |
| 12/07/1995 | WO1995033017A1 Process for reducing the level of sulfur in a refinery process stream and/or crude oil |
| 12/07/1995 | WO1995032801A1 A process for improving the effectiveness of a process catalyst |
| 12/07/1995 | CA2191744A1 Gaming system and process for generating card faces |
| 12/07/1995 | CA2191743A1 A process for improving the effectiveness of a process catalyst |
| 11/29/1995 | CN1112600A Process for the conversion of a residual hydrocarbon oil |
| 11/14/1995 | US5466365 Process for deasphalting and demetallizing petroleum residues |
| 11/08/1995 | EP0680505A1 Treatment of waste petroleum. |
| 10/31/1995 | US5462650 Catalytic hydrocracking of stock oil in presence of silica-alumina support which contains group 5 and 8 metal, cracked product separation into fuel and lubricating oil fractions by distillation, dewaxing and hydrofinishing of lubricating oil |
| 10/31/1995 | CA1337485C Removing haze from dewaxed hydrocarbon oil mixture boiling in the lubricating oil range |
| 10/24/1995 | US5461184 Method for diamondoid extraction using a solvent system |
| 10/24/1995 | US5460713 Distillation of a mixture of heavy gas oil, vacuum gas oil and slack wax |
| 10/17/1995 | US5458437 Extraction of non-ionic organic pollutants |
| 10/05/1995 | DE19510517A1 Verfahren zur Inhibierung der Oxidation und Polymerisation von Furfural und seinen Derivaten A method for inhibiting the oxidation and polymerization of furfural and its derivatives |
| 09/26/1995 | US5453519 Process for inhibiting oxidation and polymerization of furfural and its derivatives |
| 09/21/1995 | WO1995024981A1 Extraction of non-ionic organic pollutants |
| 09/20/1995 | EP0672625A1 Compound for water treatment with polyaspartic acid or a derivative thereof and phosphonic acid |
| 09/13/1995 | EP0671455A2 Process for the selective removal of nitrogen-containing compounds from hydrocarbon blends |
| 09/12/1995 | US5449797 Process for the removal of soap from glyceride oils and/or wax esters using an amorphous adsorbent |
| 09/05/1995 | US5447620 In a first distillation zone, contact distillate with water to form two phases, decantation, and multistage distillation |
| 08/29/1995 | US5446231 Extracting nitriles with solvent of water and methanol, separating hydrocarbon |
| 08/23/1995 | CN1107174A Reusing method for extracted solution of lubricating oil solvent |
| 08/17/1995 | WO1995021902A1 Removal of contaminants from oil |
| 08/17/1995 | CA2183433A1 Removal of contaminants from oil |
| 08/16/1995 | EP0667517A1 Method and apparatus to manufacture optimum VI dewaxed oil |
| 08/09/1995 | EP0408700B1 Method for sweetening hydrocarbons |
| 07/27/1995 | WO1995019946A1 Method for removing contaminants from hydrocarbon streams |
| 07/25/1995 | US5435918 Solvent extraction process involving membrane separation of extract phase and/or intermediate zone phase |
| 06/01/1995 | WO1995014752A1 Purification of oil |
| 05/31/1995 | CN1028648C Demetal inpurity from hydrocarbon material using inorganic chelating agent containing phosphorus |
| 05/30/1995 | US5419185 Optimization of the process to manufacture dewaxed oil |
| 05/17/1995 | EP0653477A2 Desulfurization and denitration of light oil by extraction |
| 05/17/1995 | EP0562005B1 Integrated solvent extraction/membrane extraction with retentate recycle for improved raffinate yield |
| 04/26/1995 | EP0649328A1 Process and device for cleaning pcb-contaminated electric appliances |
| 03/16/1995 | WO1995007248A1 Aromatics extraction from hydrocarbon oil using tetramethylene sulfoxide |
| 02/15/1995 | CN1027647C Method for extracting petroleum |
| 02/07/1995 | CA2005946C Composition and method for sweetening hydrocarbon |
| 02/01/1995 | EP0636675A2 Method of treating sour gas and liquid hydrocarbon streams |
| 01/31/1995 | CA2125513A1 Method of treating sour gas and liquid hydrocarbon streams |
| 01/17/1995 | CA1334015C Two-step heterocyclic nitrogen extraction from petroleum oils with reduced refinery equipment |
| 01/05/1995 | DE4320711A1 Process for cleaning transformers |
| 12/28/1994 | CN1027176C Hydrocracking process with polycyclic aromatic dimer removal |
| 11/16/1994 | CN1095088A Treatment of waste petroleum |
| 10/11/1994 | US5354454 Using dimethyl carbonate as extraction solvent |
| 10/03/1994 | CA2118984A1 Upgrading of bitumen asphaltenes by hot water treatment containing carbonate |
| 10/03/1994 | CA2118983A1 Upgrading of bitumen by hot water treatment |
| 09/27/1994 | CA1332140C Method and apparatus for reclassification of electrical apparatus contaminated with pcb |