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Class Information
Number: 568/913
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Acyclic > Purification or recovery
Description: Processes which include separating the compound from impurities or from the reaction mixture.










Sub-classes under this class:

Class Number Class Name Patents
568/920 Alkali or alkaline earth metal containing compound utilized 23
568/923 By crystallization of hydroxy compound or by forming hydroxy containing addition compound 19
568/916 By dehydration 121
568/915 By oxidation 6
568/918 By plural liquid phase separation 121
568/914 By reduction (e.g., by hydrogenation, etc.) 55
568/917 By sorption 81
568/922 Heavy metal or aluminum containing compound utilized 35


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8704014 Process for purifying ethanol Apr. 22, 2014
8704015 Process for recovering ethanol Apr. 22, 2014
8704016 SMB process for the purification of ethanol and butanediol with integrated regeneration Apr. 22, 2014
8686200 Process to recover alcohol from an acidic residue stream Apr. 1, 2014
8658845 Process and adsorbent for separating ethanol and associated oxygenates from a biofermentation system Feb. 25, 2014
8653308 Process for utilizing a water stream in a hydrolysis reaction to form ethanol Feb. 18, 2014
8652304 Process for separating solids from valuable or harmful liquids by vaporisation Feb. 18, 2014
8629306 Method for producing 1,6-hexanediol Jan. 14, 2014
8604255 Process for recovering ethanol with sidedraws to regulate C.sub.3+ alcohols concentrations Dec. 10, 2013
8586802 Multi-stage process and apparatus for recovering dichlorohydrins Nov. 19, 2013
8575403 Hydrolysis of ethyl acetate in ethanol separation process Nov. 5, 2013
8575405 Reducing acetals during ethanol separation process Nov. 5, 2013
8569552 Recovery of butanol from a mixture of butanol, water, and an organic extractant Oct. 29, 2013
8563788 Recovery of butanol from a mixture of butanol, water, and an organic extractant Oct. 22, 2013
8558034 Reducing acetals during ethanol separation process using high pressure distillation column Oct. 15, 2013
8558037 Method of producing butanol Oct. 15, 2013
8552224 Processes for maximizing ethanol formation in the hydrogenation of acetic acid Oct. 8, 2013
8546622 Process for making ethanol from acetic acid using acidic catalysts Oct. 1, 2013
8513472 High purity 1,6-hexanediol and process for preparing the same Aug. 20, 2013
8481792 Reducing acetals and/or esters during ethanol separation process Jul. 9, 2013
8471077 Process and apparatus for efficient recovery of dichlorohydrins Jun. 25, 2013
8461399 Separation process having an alcohol sidestream Jun. 11, 2013
8455703 Use of ionic liquids with tetracyanoborate anions as a solvents for extraction of alcohols from aqueous solutions Jun. 4, 2013
8440765 Nanostructured polymer membranes for selective alcohol transport May. 14, 2013
8440869 Use of ionic liquids containing tricyanomethide anions as solvents for the extraction of alcohols from aqueous solutions May. 14, 2013
8440866 Process for separating ethanol having low acid May. 14, 2013
8399719 Process for producing a water stream from ethanol production Mar. 19, 2013
8373008 Recovery of butanol from a mixture of butanol, water, and an organic extractant Feb. 12, 2013
8373009 Recovery of butanol from a mixture of butanol, water, and an organic extractant Feb. 12, 2013
8354564 Production of dry alcohol Jan. 15, 2013
8344189 Processes for the recovery of fuel-grade ethanol from dilute aqueous streams Jan. 1, 2013
8318988 Process for purifying a crude ethanol product Nov. 27, 2012
8314272 Process for recovering ethanol with vapor separation Nov. 20, 2012
8309773 Process for recovering ethanol Nov. 13, 2012
8304587 Process for producing ethanol using an extractive distillation column Nov. 6, 2012
8304586 Process for purifying ethanol Nov. 6, 2012
8304585 Production process of 1,6-hexanediol Nov. 6, 2012
8288596 Manufacture of purified alcohols Oct. 16, 2012
8263814 Energy efficient separation of ethanol from aqueous solution Sep. 11, 2012
8252149 Method of cleaning and recycling glycol-tainted water from de-icing operations at airports Aug. 28, 2012
8222466 Process for producing a water stream from ethanol production Jul. 17, 2012
8143460 Apparatus and method for increasing alcohol yield from grain Mar. 27, 2012
8129573 Method for purifying fermentation alcohol Mar. 6, 2012
8057642 Method of corrosion prevention Nov. 15, 2011
8053610 Method for purifying fermentation alcohol Nov. 8, 2011
8026399 Fractional condensation processes, apparatuses and systems Sep. 27, 2011
8022257 Methods for producing polyols using crude glycerin Sep. 20, 2011
7893305 Separation of diols from a mixture comprising diols and polyols Feb. 22, 2011
7834225 Method and device for separation of liquid mixtures without thermal distillation Nov. 16, 2010
7795479 Temperature controlled adsorption multi-step regeneration cycle Sep. 14, 2010

1 2 3 4 5 6 7










 
 
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