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Class Information
Number: 585/860
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > N-containing
Description: Subject matter wherein an agent contains nitrogen.










Sub-classes under this class:

Class Number Class Name Patents
585/861 Ammonia 17
585/862 Carbonyl moiety-containing 45
585/863 Interaction with aromatic 30


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8663461 Extraction process with novel solvent regeneration methods Mar. 4, 2014
8608943 Process for removing nitrogen from vacuum gas oil Dec. 17, 2013
8608949 Process for removing metals from vacuum gas oil Dec. 17, 2013
8608950 Process for removing metals from resid Dec. 17, 2013
8608952 Process for de-acidifying hydrocarbons Dec. 17, 2013
8580107 Process for removing sulfur from vacuum gas oil Nov. 12, 2013
8552247 Aromatics recovery by extractive distillation Oct. 8, 2013
8420879 Process for workup of a stream comprising butene and/or butadiene Apr. 16, 2013
8378164 Method for obtaining aromatic hydrocarbons from a hydrocarbon mixture Feb. 19, 2013
8366914 Multifunctional scavenger for hydrocarbon fluids Feb. 5, 2013
8362314 Method for obtaining aromatic hydrocarbons from a hydrocarbon mixture Jan. 29, 2013
8362313 Processes and systems for recovery of styrene from a styrene-containing feedstock Jan. 29, 2013
8323456 Removal of bound water from bio-oil Dec. 4, 2012
8237005 Method for separating and producing cyclohexene Aug. 7, 2012
8110716 Method for the removal of acetylenes from olefins using ionic liquid-based solution Feb. 7, 2012
8110094 Regenerable and non-regenerable sorbents for acid gas removal Feb. 7, 2012
8076526 Extractive distillation of conjugated diene Dec. 13, 2011
8058498 Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds Nov. 15, 2011
7879918 Low-foaming gas processing compositions and uses thereof Feb. 1, 2011
7803271 Method of extracting the hydrogen sulfide contained in a hydrocarbon gas Sep. 28, 2010
7718841 Extractive distillation May. 18, 2010
7687048 Amine treatment in light olefin processing Mar. 30, 2010
7601255 Process for removal of residual catalyst components Oct. 13, 2009
7553406 Process for removing polar impurities from hydrocarbons and mixtures of hydrocarbons Jun. 30, 2009
7495141 Minimizing corrosion in a methanol-to-olefin effluent processing system Feb. 24, 2009
7432411 Continuous method for obtaining butenes from a C.sub.4 fraction Oct. 7, 2008
7396450 Method of reducing amount of peroxides, reducing fuel sediments and enhancing fuel system elastomer durability, fuel stability and fuel color durability Jul. 8, 2008
7355087 Production of 1-alkenes from mixed olefin streams using catalytic distillation Apr. 8, 2008
7348466 Solvent extraction Mar. 25, 2008
7304200 Method for separation of substances by extraction or by washing them with ionic liquids Dec. 4, 2007
7205438 Solvent recovery blends from diene production Apr. 17, 2007
7204927 Settling aids for solids in hydrocarbons Apr. 17, 2007
7202391 Process for inhibiting polymerization of an aromatic vinyl compound Apr. 10, 2007
7182839 Preventing deposition of fouling agents onto equipment Feb. 27, 2007
7078580 Process for separating aromatics by extractive distillation and a composite solvent used therein Jul. 18, 2006
7048847 Settling aids for solids in hydrocarbons May. 23, 2006
7019188 Use of ionic liquids to separate olefins, diolefins and aromatics Mar. 28, 2006
6866772 Extraction of aromatics from hydrocarbon oil using furfural-co-solvent extraction process Mar. 15, 2005
6689926 Process for purifying styrene monomer feedstock prior to polymerization Feb. 10, 2004
6617483 Polyalkylene glycol compositions for enhanced aromatic extraction Sep. 9, 2003
6555726 Methods for enhanced extractive distillation employing extractive distillation compositions comprising sulfolane and compatibility agent Apr. 29, 2003
6531103 Process for removing sulfur compounds from gas and liquid hydrocarbon streams Mar. 11, 2003
6483003 Removal of impurities from a hydrocarbon component or fraction Nov. 19, 2002
6475348 Mixture of substances containing compounds with vinyl groups and stabilizers Nov. 5, 2002
6441264 Method for separating benzothiophene compounds from hydrocarbon mixture containing them, and hydrocarbon mixture obtained by said method Aug. 27, 2002
6407306 Process for extracting carotenes from carotene-containing materials Jun. 18, 2002
6395953 Process for preparing purified conjugated diene May. 28, 2002
6392115 Separation of hydrocarbons by extractive distillation May. 21, 2002
6342648 Methods and compositions for inhibiting vinyl aromatic monomer polymerization Jan. 29, 2002
6337429 Method for separating a C4-hydrocarbon mixture Jan. 8, 2002

1 2 3 4










 
 
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