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Class Information
Number: 585/800
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery
Description: Processes in which a mixture of a hydrocarbon compound with another substance is treated to recover that same compound in a more usable condition, that is, a purer or less undesirable condition, by a treatment which comprises separating the hydrocarbon from the other substance or making the other substance less obnoxious.

Sub-classes under this class:

Class Number Class Name Patents
585/833 By addition of extraneous agent, e.g., solvent, etc. 283
585/820 By contact with solid sorbent 426
585/801 By conversion of solid to gas, e.g., sublimation, etc., or by melting or squeezing out liquid from solid natural source 16
585/812 By cooling of liquid to obtain solid, e.g., crystallization, etc. 83
585/818 By membrane, selective septum, or coalescer 182
585/802 By plural serial diverse separations 184
585/832 Polymerization and depolymerization 48

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8673312 Method for one-step purification of recombinant Helicobacter pylori neutrophil-activating protein Mar. 18, 2014
8615325 Advanced control system for steam hydrocarbon reforming furnaces Dec. 24, 2013
8598402 Butane absorption system for vent control and ethylene purification Dec. 3, 2013
8580119 Transesterification of biodiesel feedstock with solid heterogeneous catalyst Nov. 12, 2013
8569562 Purification of isoprene from renewable resources Oct. 29, 2013
8557028 Binderless zeolitic adsorbents, methods for producing binderless zeolitic adsorbents, and adsorptive separation processes using the binderless zeolitic adsorbents Oct. 15, 2013
8502004 Process for evaluating a refinery feedstock Aug. 6, 2013
8481795 Processes for transalkylating aromatic hydrocarbons and converting olefins Jul. 9, 2013
8466329 Cold flow response of diesel fuels by fraction replacement Jun. 18, 2013
8445740 Absorber demethanizer for FCC process May. 21, 2013
8435403 Process for removing nitrogen May. 7, 2013
8431755 Combined first and second generation biofuels process Apr. 30, 2013
8399728 Absorber demethanizer for methanol to olefins process Mar. 19, 2013
8388828 Recovery and use of conjunct polymers from ionic liquid catalysts Mar. 5, 2013
8344199 Removal of ultra-fine particles from a Fischer Tropsch stream Jan. 1, 2013
8329974 Filtration tray for fixed bed reactor with a co-current down-flow of gas and liquid Dec. 11, 2012
8237004 Process for making products with low hydrogen halide Aug. 7, 2012
8222474 Fractional extraction of butadiene Jul. 17, 2012
8182654 Heat pump for high purity bottom product May. 22, 2012
8173023 Method and apparatus for treatment of a fluid May. 8, 2012
8153853 Processes using dividing wall distillation column Apr. 10, 2012
8093440 Process and apparatus for C.sub.2 recovery Jan. 10, 2012
8080701 Method and apparatus for treating a hydrocarbon stream Dec. 20, 2011
8053375 Super-dry reagent compositions for formation of ultra low k films Nov. 8, 2011
8044253 Xylene production processes with integrated feedstock treatment Oct. 25, 2011
8039682 Production of aviation fuel from renewable feedstocks Oct. 18, 2011
8013082 Processes for correlating UV-VIS spectra of norbornene compound to polymerization processes using the same, and related purification methods and compositions Sep. 6, 2011
8013195 Enhancing conversion of lignocellulosic biomass Sep. 6, 2011
8013197 Absorption and conversion of acetylenic compounds Sep. 6, 2011
7989668 Lowering nitrogen-containing Lewis bases in molecular sieve oligomerisation Aug. 2, 2011
7989669 Recycle of DME in an oxygenate-to-olefin reaction system Aug. 2, 2011
7960597 Conversion of vegetable oils to base oils and transportation fuels Jun. 14, 2011
7956157 Processes using dividing wall distillation column Jun. 7, 2011
7799118 Product recovery in gas-solids reactors Sep. 21, 2010
7781635 Surfactant-based purification of nanotubes Aug. 24, 2010
7727401 Selective purification of mono-terpenes for removal of oxygen containing species Jun. 1, 2010
7696398 Stabilization of olefin metathesis product mixtures Apr. 13, 2010
7691239 Distillation systems Apr. 6, 2010
7691354 Synthesis of SAPO-34 with essentially pure CHA framework Apr. 6, 2010
7652185 Catalyst recovery process Jan. 26, 2010
7582312 Methods to produce lung surfactant formulations via lyophilization and formulations and uses thereof Sep. 1, 2009
7554002 Method for cold supply to the low-temperature separation stage of an olefin plant Jun. 30, 2009
7435319 Process for the mild distillative separation of mixtures Oct. 14, 2008
7429553 Process for reducing the toxicity of hydrocarbons Sep. 30, 2008
7402716 Hybrid cubic/hexagonal diamondoids Jul. 22, 2008
7357902 Process for the removal of oxygen from olefin-containing process streams Apr. 15, 2008
7326821 Removal of oxygenate from an olefin stream Feb. 5, 2008
7326820 System and method for purifying heptane Feb. 5, 2008
7326817 Process for reducing the toxicity of hydrocarbons Feb. 5, 2008
7294749 Low pressure olefin recovery process Nov. 13, 2007

1 2 3 4

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