| Patents for C02F 5 - Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (8,632) |
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| 02/17/1999 | EP0896570A1 Use of hydroxamated polymers to alter bayer process scale |
| 02/16/1999 | US5871691 Corrosion resistance of iron metals in water systems |
| 02/03/1999 | EP0720588B1 Method and apparatus for treating fluid with radio frequency signals |
| 02/02/1999 | US5866042 Copolymer of (meth)acrylic acid and acetoacetoxyethyl methacrylate |
| 02/02/1999 | US5866032 Composition for controlling scale formation in aqueous systems |
| 02/02/1999 | US5866013 Method for inhibiting scale and controlling corrosion in cooling water systems |
| 02/02/1999 | US5866012 Water treatment |
| 02/02/1999 | US5866011 Using polyepoxysuccinic acid |
| 01/27/1999 | EP0892838A1 Use of aspartic acid-containing polymers in cooling circuits with added biocides |
| 01/27/1999 | EP0823923B1 Process for preparing polymers with recurring succinyl units |
| 01/26/1999 | US5864596 Minimizing the accumulation of metal-oxide deposits |
| 01/20/1999 | EP0892040A2 Chelating composition |
| 01/13/1999 | CN2303836Y 水垢抑制机 Scale inhibition machine |
| 01/12/1999 | US5858248 On premise water treatment method for use in a post-mix beverage dispenser |
| 01/12/1999 | US5858245 Flashing geothermal fluid to produce steam and brine containing dissolved silicon compounds, adding aluminum complexing agent to form soluble complex, flowing in contact with heat exchanger to cool without forming precipitate |
| 01/12/1999 | US5858244 Use of biodegradable polymers in prevention scale build-up |
| 01/12/1999 | US5858176 Compositions and methods for inhibiting fouling of vinyl monomers |
| 01/12/1999 | CA2067148C Calcium hypochlorite compositions for inhibiting scale formation and a method for their use |
| 01/06/1999 | CN1203962A Scale inhibitors |
| 01/06/1999 | CN1203889A Utility of water-soluble polymers having pendant derivatized amide functionalities for scale control |
| 01/05/1999 | US5855791 Performance-based control system |
| 12/30/1998 | EP0887316A1 Utility of water-soluble polymers having pendant derivatized amide functionalities for scale control |
| 12/30/1998 | CN2302248Y Domestic water activation generator |
| 12/29/1998 | US5854321 Graft copolymers of unsaturated monomers and sugars, a process for the production and the use thereof |
| 12/29/1998 | US5854191 Graft copolymers of unsaturated monomers and sugars, a process for the production and the use thereof |
| 12/27/1998 | CA2241617A1 Utility of water-soluble polymers having pendant derivatized amide functionalities for scale control |
| 12/16/1998 | CN2300644Y Electromagnetic scale remover |
| 12/09/1998 | EP0881991A1 A method for inhibiting the deposition of silica and silicate compounds in water systems |
| 12/09/1998 | EP0850198A4 Magnesiosilicates |
| 12/09/1998 | CN2299859Y Filter element mounted in unboiled water heating container |
| 12/09/1998 | CN1201016A Method for inhibiting formation of scale in water-heating part, and water heater using same |
| 12/09/1998 | CN1041099C Acid catalyzed process for preparing amino acid polymers |
| 12/08/1998 | US5847065 Dispersions of graft copolymers of unsaturated monomers and sugars |
| 12/03/1998 | WO1998054096A1 System for recovering and treating waste water |
| 12/02/1998 | EP0880472A1 Methods and compositions for controlling biofouling using fluorosurfactants |
| 11/25/1998 | EP0879794A1 Scale inhibiting agent and method for using same |
| 11/25/1998 | EP0879793A1 A process for treating water to inhibit scale formation |
| 11/25/1998 | CN1200100A Magnesiosilicates |
| 11/24/1998 | US5841826 Method of using a chemical solution to dislodge and dislocate scale, sludge and other deposits from nuclear steam generators |
| 11/24/1998 | US5840658 Process for the controlled fixing of scale inhibitor in a subterranean formation |
| 11/19/1998 | DE19720538A1 Removal of metal ions from dilute aqueous solution without concentration step |
| 11/18/1998 | EP0878446A1 A proces for sequestration of water hardness ions |
| 11/11/1998 | EP0877002A2 Scale inhibitors |
| 11/09/1998 | CA2236605A1 Scale inhibitors |
| 11/05/1998 | WO1998049260A1 Use of polysaccharide polymer in a liquid acidic composition |
| 11/05/1998 | WO1998049257A1 Acidic limescale removal compositions |
| 11/05/1998 | CA2287835A1 Acidic limescale removal compositions |
| 11/04/1998 | EP0875555A1 Use of polysaccharide polymer in liquid acidic composition |
| 11/04/1998 | EP0875553A1 Detergent composition |
| 11/04/1998 | EP0875551A1 Self-thickened acidic cleaning compositions |
| 11/04/1998 | EP0594806B1 Composition and method for scavenging oxygen |
| 11/04/1998 | CN1197770A Rubber ball cleaning system for steam condenser |
| 11/03/1998 | US5830985 Acid polymerization catalysts |
| 11/03/1998 | US5830956 Biodegradable copolymers, methods of producing them and their use |
| 10/29/1998 | WO1998047593A1 Compositions and methods for inhibiting fouling of vinyl monomers |
| 10/29/1998 | WO1998033750A3 Preparation and utility of water-soluble polymers having pendant derivatized amide, ester or ether functionalities as ceramics dispersants and binders |
| 10/28/1998 | EP0874067A2 Apparatus and method for removing metal or mineral contaminants, especially for oil drilling equipments |
| 10/28/1998 | EP0874004A1 Improved chelating resins |
| 10/28/1998 | CN2295749Y Counterflush electronic descaling device |
| 10/28/1998 | CN1197085A Improved chelating resins |
| 10/21/1998 | CA2234880A1 Improved chelating resins |
| 10/15/1998 | WO1998045400A1 Water-soluble, water-softening builder |
| 10/15/1998 | CA2229969A1 Use of multiple treatment agents to reduce hardness of an oilfield produced water |
| 10/15/1998 | CA2229924A1 Water treatment process for reducing the hardness of an oilfield produced water |
| 10/13/1998 | US5821211 De-scaling solution and methods of use |
| 10/11/1998 | CA2203284A1 Process for tablet production |
| 10/07/1998 | EP0869201A2 Method for preventing metal deposition and an oil or gas well with electrically contacting means |
| 10/07/1998 | EP0869169A1 Detergent composition |
| 10/07/1998 | EP0868578A1 Device for deliming water outlets |
| 10/07/1998 | EP0868448A1 Low molecular weight structured polymers |
| 09/30/1998 | EP0867410A2 Cooling water treatment composition comprising a source of peroxide, a phosphonate compound and an organic alcohol |
| 09/29/1998 | US5814221 Solution treatment device |
| 09/29/1998 | CA2114692C Scale deposit inhibitor for kraft digesters and method for controlling scale deposition in kraft digesters |
| 09/23/1998 | CN1193609A Agent and method for cleaning pre-membrane of circulation system at hot status |
| 09/22/1998 | CA2059419C Water softening process and apparatus |
| 09/16/1998 | EP0863850A1 Drinking water system cleaner, cleaning method and use thereof |
| 09/09/1998 | EP0638049B1 Process for preventing deposits in a structure's drainage system |
| 09/09/1998 | CN1039701C Method and solid material body for purifying fluids such as water, aqueous fluids and liquid fuels |
| 09/08/1998 | US5804606 Suspension polymerization of mono- and di-vinyl aromatics, oxygen-containing crosslinkers in presence of phase extender; improved stability, capacity. |
| 09/02/1998 | EP0861846A2 Novel phosphino derivatives |
| 09/02/1998 | CN2289785Y Magnetic treater without scaling |
| 09/01/1998 | US5800732 All-in-one treatment agent for cooling water |
| 09/01/1998 | US5800718 Method for treating dry film stripping and developing solution |
| 08/26/1998 | CN2288967Y Water treatment device |
| 08/20/1998 | WO1998035915A1 Inhibition of calcium oxalate scale in aqueous based solutions |
| 08/19/1998 | CN1190659A Hydrophilic graft polymer, production process therefor, composition containing polymer, and use thereof |
| 08/12/1998 | EP0857514A2 Method of preventing corrosion in a water system |
| 08/06/1998 | WO1998033750A2 Preparation and utility of water-soluble polymers having pendant derivatized amide, ester or ether functionalities as ceramics dispersants and binders |
| 08/06/1998 | CA2279321A1 Preparation and utility of water-soluble polymers having pendant derivatized amide, ester or ether functionalities as ceramics dispersants and binders |
| 08/05/1998 | CN1189498A Method for preparing carbamido tetra-al-alphospho acid and sodium salt and its application |
| 08/04/1998 | US5788885 Reduces viscosity, inhibits settling for improved pumpability; a combo of a dicarboxyethyl-n-octadecyl surfactant, an alkylaryl sulfonate surfactant, xanthan gum and clay. |
| 08/04/1998 | US5788866 Prevent precipitation of scale on metal surfaces |
| 08/04/1998 | US5788857 Hydroxyimino alkylene phosphonic acids for corrosion and scale inhibition in aqueous systems |
| 07/29/1998 | EP0754167B1 Process and installation for the targeted formation of germs or crystals |
| 07/22/1998 | CN1188081A Silicate coating inhibition and scale preventing agent |
| 07/21/1998 | US5783728 Antiscaling agents; corrosion resistance |
| 07/21/1998 | US5783616 Graft copolymers of unsaturated monomers and sugars, a process for the production and the use thereof |
| 07/15/1998 | CN1187470A Process for treating water |
| 07/14/1998 | US5779814 Method for controlling and removing solid deposits from a surface of a component of a steam generating system |
| 07/08/1998 | CN1186780A Producing method and use of scale-eliminating member |