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Class Information
Number: 562/608
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acids and salts thereof > Acyclic > Saturated lower fatty acids > Acetic acid per se or salt thereof > Purification or recovery per se
Description: Processes directed to the purification, separation, or recovery of acetic acid.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612232 |
Purification of acetic acid from wood acetylation process |
Nov. 3, 2009 |
| 7601865 |
Recovery of organic acids |
Oct. 13, 2009 |
| 7538245 |
Process for the manufacture of an enantiopure compound |
May. 26, 2009 |
| 7524988 |
Preparation of acetic acid |
Apr. 28, 2009 |
| 7485749 |
Preparation of acetic acid |
Feb. 3, 2009 |
| 7473409 |
Process for recycling waste acid |
Jan. 6, 2009 |
| 7410632 |
Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
Aug. 12, 2008 |
| 7368603 |
Method for purifying compounds containing functional groups |
May. 6, 2008 |
| 7365219 |
Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds |
Apr. 29, 2008 |
| 7351396 |
Extraction process for removal of impurities from an aqueous mixture |
Apr. 1, 2008 |
| 7326323 |
High capacity purification of thermally unstable compounds |
Feb. 5, 2008 |
| 7223886 |
Removal of permanganate reducing compounds from methanol carbonylation process stream |
May. 29, 2007 |
| 7223883 |
Removal of permanganate reducing compounds from methanol carbonylation process stream |
May. 29, 2007 |
| 7208625 |
Removing permanganate-reducing impurities from acetic acid |
Apr. 24, 2007 |
| 7208624 |
Process for producing acetic acid |
Apr. 24, 2007 |
| 7196218 |
Microbial process for the preparation of acetic acid, as well as solvent for its extraction from the fermentation broth |
Mar. 27, 2007 |
| 7048835 |
System and method for acetic acid recovery during terephthalic acid production |
May. 23, 2006 |
| 7041199 |
Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate |
May. 9, 2006 |
| 6955743 |
Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
Oct. 18, 2005 |
| 6926810 |
Process for obtaining an organic acid from an organic acid ammonium salt, an organic acid amide, or an alkylamine organic acid complex |
Aug. 9, 2005 |
| 6867329 |
Waste water treatment in a method for producing formic acid which is free of water |
Mar. 15, 2005 |
| 6838579 |
Utilization of an extracting agent as antifoaming agent in the production of anhydrous formic acid |
Jan. 4, 2005 |
| 6793777 |
Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid |
Sep. 21, 2004 |
| 6747067 |
Process for converting cellulosic material into liquids |
Jun. 8, 2004 |
| 6706193 |
Method for recovering fluorinated emulsifiers from aqueous phases |
Mar. 16, 2004 |
| 6695952 |
Method for the separation of and purification of an aqueous mixture consisting of the main components acetic acid and formic acid |
Feb. 24, 2004 |
| 6667418 |
Oxidation treatment of a recycle stream in production of acetic acid by methanol carbonylation |
Dec. 23, 2003 |
| 6657078 |
Low energy carbonylation process |
Dec. 2, 2003 |
| 6641734 |
Process for purifying an organic acid |
Nov. 4, 2003 |
| 6627768 |
Process for recovery of acid |
Sep. 30, 2003 |
| 6613941 |
Method for recovering fluorinated alkanoic acids from waste waters |
Sep. 2, 2003 |
| 6518442 |
Process for the recovery of fluorinated alkandic acids from wastewater |
Feb. 11, 2003 |
| 6518465 |
Reactive distillation process for hydrolysis of esters |
Feb. 11, 2003 |
| 6512143 |
Salts of N-tert-butylhydroxylamine |
Jan. 28, 2003 |
| 6506935 |
Combination pretreatment/adsorption for treating a liquid stream contaminated with an iodine-containing compound |
Jan. 14, 2003 |
| 6489508 |
Method for purifying lactic acid |
Dec. 3, 2002 |
| 6482981 |
Method for producing acrylic acid |
Nov. 19, 2002 |
| 6462231 |
Method of producing carboxylic acid and alcohol |
Oct. 8, 2002 |
| 6433163 |
Combined supported liquid membrane/strip dispersion process for the removal and recovery of penicillin and organic acids |
Aug. 13, 2002 |
| 6417128 |
Methods and replacing water and cyclohexanone with acetic acid in aqueous solutions of catalyst |
Jul. 9, 2002 |
| 6380428 |
Method for treating a liquid stream contaminated with an iodine-containing compound using a cation-exchanged zeolite |
Apr. 30, 2002 |
| 6375804 |
Tertiary butyl acetate recovery |
Apr. 23, 2002 |
| 6376223 |
Process for purifying polycarboxylic acids |
Apr. 23, 2002 |
| 6346645 |
Adsorptive removal of carbonyl impurities from oxygenated organic liquids |
Feb. 12, 2002 |
| 6339171 |
Removal or reduction of permanganate reducing compounds and alkyl iodides from a carbonylation process stream |
Jan. 15, 2002 |
| 6329549 |
Dimethyl ether for methyl group attachment on a carbon adjacent to an electron withdrawing group |
Dec. 11, 2001 |
| 6326515 |
Carbonylation of methanol to acetic acid with removal of impurities from the product |
Dec. 4, 2001 |
| 6258980 |
Production of metal salts |
Jul. 10, 2001 |
| 6245942 |
Reduction of the carbonyl value of carboxylic acids and derivatives of carboxylic acids and derivatives of carboxylic acids |
Jun. 12, 2001 |
| 6225498 |
Method of removing organic iodides from organic media |
May. 1, 2001 |
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