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Class Information
Number: 210/677
Name: Liquid purification or separation > Processes > Ion exchange or selective sorption > Including rehabilitating or regenerating exchange material or sorbent > Using conserved or recirculated fluid
Description: Process in which a liquid which has once been contacted with the separatory material is again contacted with the same or a different separatory material at a different step in the treating-regenerating cycle.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8679347 Multi-use high water recovery process Mar. 25, 2014
8663476 Water softener regeneration Mar. 4, 2014
8585906 Regeneration of ion exchange resin and recovery of regenerant solution Nov. 19, 2013
8557119 High water recovery from desalination systems using ion exchange technology Oct. 15, 2013
8551340 Method for selective sulphate removal by exclusive anion exchange from hard water waste streams Oct. 8, 2013
8486269 Method for generating softened injection water Jul. 16, 2013
8404120 Method of continuously separating adsorbate Mar. 26, 2013
8349187 Method to remove antimony from copper electrolytes Jan. 8, 2013
8282832 Oil drier regenerator Oct. 9, 2012
7887707 Regeneration of water treatment substrates Feb. 15, 2011
7875186 Process for regenerating and protonating a weak-base anion exchange resin Jan. 25, 2011
7871523 Purification of water Jan. 18, 2011
7850852 Process for producing amino acid or salt thereof by column technique and production apparatus thereof Dec. 14, 2010
7846338 Ion exchange process Dec. 7, 2010
7811457 Alkaline regeneration of N-methyl-D-glucamine functional resins Oct. 12, 2010
7722773 Method of treating organic compounds in wastewater May. 25, 2010
7578416 Water purification apparatus Aug. 25, 2009
7371326 Water treatment/remediation system May. 13, 2008
7361281 High efficiency ion exchange system and method for removing chromium from water Apr. 22, 2008
7291272 Inorganic contaminant removal from water Nov. 6, 2007
7273555 Process for continuous ion exchange Sep. 25, 2007
7160430 Electrochemical treatment of ammonia in waste-water Jan. 9, 2007
7067062 Closed end regeneration method Jun. 27, 2006
7041223 High efficiency ion exchanges system for removing contaminants from water May. 9, 2006
6908560 Zero brine, zero rinse water process for treatment of contaminated drinking water for removal of arsenic Jun. 21, 2005
6878286 High efficiency ion exchange system for removing contaminants from water Apr. 12, 2005
6878285 Ion-exchange based fluid treatment systems Apr. 12, 2005
6878284 Method and apparatus of treating water containing a nitrogen compound Apr. 12, 2005
6821434 System for removal of arsenic from water Nov. 23, 2004
6800203 Catalytic destruction of perchlorate in ferric chloride and hydrochloric acid solution with control of temperature, pressure and chemical reagents Oct. 5, 2004
6776913 Water softening method and apparatus for use therewith Aug. 17, 2004
6736976 Fluid treatment process May. 18, 2004
6641737 Vertical filter Nov. 4, 2003
6593379 Method for converting a weakly acid ion exchanger material from the H form into the Ca form Jul. 15, 2003
6475390 Process for the purification of nutrients from food process streams Nov. 5, 2002
6436719 Displacement chemical regeneration method and apparatus Aug. 20, 2002
6416670 Regenerable hydrocarbon filter Jul. 9, 2002
6383540 Method of processing whey for demineralization purposes May. 7, 2002
6375851 Continuous liquid purification process Apr. 23, 2002
6361696 Self-regenerative process for contaminant removal from liquid and supercritical CO2 fluid streams Mar. 26, 2002
6334886 Removal of corrosive contaminants from alkanolamine absorbent process Jan. 1, 2002
6245128 Process for the reclamation of spent alkanolamine solution Jun. 12, 2001
6214233 Process for simultaneous oxidation of cyanide and recovery of heavy metals from waste water Apr. 10, 2001
6200364 Process for eluting precious metals from activated carbon Mar. 13, 2001
6187189 Process for the preparation of an ultrapure solution of hydrogen peroxide by ion exchange with recycling Feb. 13, 2001
6117331 Processes for the purification of waters containing organic constituents Sep. 12, 2000
6080315 Process for the partial desalination of water Jun. 27, 2000
6059974 Water treatment process May. 9, 2000
6042729 Regeneration of water treatment media Mar. 28, 2000
6033700 Demineralization of milk and milk-derived products by electrodeionization Mar. 7, 2000

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