| 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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| 11/05/2008 | EP1704123B1 Cooling water scale and corrosion inhibition |
| 10/30/2008 | US20080264876 Treating soil, groundwater, process water & wastewater by contact with a peroxide and an iron chelate catalyst (iron II or III citrate or ethylenediaminetetraacetate); water may contain volatile organic compounds, aromatic hydrocarbons, polychlorobiphenyls, pesticides, or herbicides |
| 10/30/2008 | US20080264870 Utilizing tolytriazole, benzotriazole and/or 4-alkylsubstituted benzotriazole inhibitors in combination with high total dissolved solids, high pH and low total hardness |
| 10/29/2008 | EP1758825B1 Improvement of sludge quality |
| 10/29/2008 | CN101293945A Method for preparing modified poly-epoxy succinic acid derivative |
| 10/29/2008 | CN100429161C Water treatment process and tubular water treatment apparatus |
| 10/28/2008 | US7442755 Adding an inhibiting polymer as antiscaling agent |
| 10/28/2008 | US7442309 Methods for reducing boron concentration in high salinity liquid |
| 10/23/2008 | WO2008127786A1 Method for reducing fouling in microfiltration systems |
| 10/22/2008 | EP1981947A1 Scale inhibiting well treatment |
| 10/22/2008 | CN201136826Y Permanent magnet flocculator |
| 10/22/2008 | CN101289257A Fluorescence labeling polyether carboxyl acids antisludging agent and preparation |
| 10/22/2008 | CN101289256A Four-element polymerization type corrosion inhibition antisludging agent and method for preparing same |
| 10/22/2008 | CN100427413C Trielement synergistic corrosion inhibitor |
| 10/21/2008 | US7438828 Diatomite having an enhanced negative electric charge mixed with ferric chloride, aluminum chloride, or magnesium chloride for cleaning water or industrial and sewage waste water; can be prepared ahead of time and then stored for later use without a significant loss of efficacy |
| 10/16/2008 | WO2008122388A1 Biodegradable cleaning agent |
| 10/15/2008 | EP1980535A2 Performance-based Control System |
| 10/15/2008 | EP1979063A2 Method of removal of heavy metal ions from water |
| 10/15/2008 | CN201132801Y Physical scale-borer |
| 10/15/2008 | CN101284701A Corrosion inhibitor and method for preparing same |
| 10/14/2008 | US7435349 System for treating wastewater containing organic compounds |
| 10/09/2008 | WO2008119533A1 Method for the removal of corrosion layers |
| 10/09/2008 | US20080245994 Cleaning Method |
| 10/09/2008 | US20080245732 Methods of using waste waters produced by water purification processing |
| 10/09/2008 | US20080245136 Closed Loop Flow Control of a Hplc Constant Flow Pump To Enable Low-Flow Operation |
| 10/08/2008 | EP1976805A2 Improved biodegradability of antiscalant formulations |
| 10/08/2008 | CN101279798A Scale-inhibiting dispersant for industry recirculated cooling water process and preparation thereof |
| 10/08/2008 | CN101279797A Treatment agent for life drinking water, preparation and application thereof |
| 10/02/2008 | WO2008117780A1 Agent for prevention of deposition of silica-containing stain, and method for prevention of deposition of silica-containing stain |
| 10/02/2008 | WO2008117778A1 Agent for prevention of deposition of silica-containing stain, and method for prevention of deposition of silica-containing stain |
| 10/02/2008 | US20080237143 Maintaining a real-time oxidation-reduction potential at a set point, wherein the system is at operating temperature and pressure; nonlinear equation is derived based upon theoretically derived or empirically collected data; equation is used to determine inflow of active chemical species to water system |
| 10/02/2008 | US20080237138 Methods and arrangements to reduce hardness of water in a hot water system |
| 10/01/2008 | CN201125197Y Homopolar multiple layer type strong magnetizer |
| 10/01/2008 | CN201125196Y Portable functional ceramic tube improving water quality |
| 10/01/2008 | CN101274803A Softener for station boiler sediment incrustation and two-stage incrustation-removing method |
| 09/25/2008 | WO2008115049A1 Method, installation and system for measuring and/or treating contaminating compounds dissolved in a liquid |
| 09/24/2008 | CN201121155Y Water purifier |
| 09/24/2008 | CN201121145Y Medicine feeding system of pure water machine |
| 09/24/2008 | CN101269887A Scale corrosion inhibitor for poly-maleic anhydride boiler |
| 09/24/2008 | CN101269865A Environment protection type mothball formulation |
| 09/24/2008 | CN101269852A Method for wastewater treatment in printed wiring board manufacturing process |
| 09/18/2008 | WO2008110507A1 Method of scavenging oxygen in aqueous systems |
| 09/18/2008 | US20080223791 Method for treating feedwater |
| 09/18/2008 | US20080223790 Desalination Scale Inhibitors |
| 09/17/2008 | CN101264987A Method for reducing hardness in drinking water |
| 09/17/2008 | CN101264986A Maleic anhydride copolymer anti-scale disperser and preparation method thereof |
| 09/17/2008 | CN100418905C Reverse osmosis membrane anti-scaling agent and its preparation method |
| 09/12/2008 | WO2008107098A2 Device for softening untreated water |
| 09/12/2008 | WO2007136831B1 Robotic pool cleaner with internal ultraviolet water sterilization |
| 09/10/2008 | EP1966097A1 Corrosion inhibition |
| 09/10/2008 | EP1966096A2 Use of phytate for water treatment |
| 09/10/2008 | CN101260177A Low molecular weight graft copolymers |
| 09/10/2008 | CN101260176A 磺化接枝共聚物 Sulfonated graft copolymer |
| 09/09/2008 | CA2432677C Phosphate stabilizing compositions |
| 09/03/2008 | CN101256180A Method for evaluation of antisludging performance of reverse osmosis antisludging agent |
| 09/03/2008 | CN101254983A Preparation method of water treatment scale and corrosion inhibitor |
| 09/03/2008 | CN101254982A Method for preparing nano scale-inducing agent |
| 09/03/2008 | CN101254953A Circulating cooling water purification re-utilization automatic monitoring system |
| 09/03/2008 | CN100415664C Low phosphine compound slow corrosion antisludging agent |
| 09/03/2008 | CN100415659C Coagulating removing method of calcium sulfate fouling in reverse osmosis concentrated liquid |
| 09/03/2008 | CN100415301C Pre-treating module and system for purifying a fluid, and methods of cleaning liquid purifying system |
| 09/02/2008 | US7419603 Water treatment method |
| 09/02/2008 | CA2215398C Treatment for inhibiting microbial adhesion on surfaces |
| 08/28/2008 | WO2008101775A1 Hot water unit |
| 08/28/2008 | DE102007008913A1 Warmwassergerät Water heater |
| 08/27/2008 | CN101250265A Method for synthesizing polysuccinimide and polysuccinimide copolymer |
| 08/27/2008 | CN100413790C Corrosion mitigation and antiscaling technology for copper and copper alloy apparatus used in cooling water system |
| 08/20/2008 | CN101245140A Non-ionic polymeric compound for inhibiting deposition of silicon dioxide/silicate dirt in water and method of producing same |
| 08/20/2008 | CN101244872A Low-zincium organophosphor scale inhibitor for recirculated cooling water process |
| 08/20/2008 | CN101244871A Environment protection type composite antisludging agent for inhibiting silicon dioxide dirt deposition in water |
| 08/20/2008 | CN101244870A Composite resistivity silicon scale inhibitor for preventing silicon dioxide dirt deposition in industrial water conditioning system |
| 08/20/2008 | CN101244869A Water treatment scale corrosion inhibitor, preparation method and application thereof |
| 08/20/2008 | CN101244856A Chemical control method for corrosion microorganism in pipeline conveyance system and product |
| 08/19/2008 | CA2204673C Method of controlling scale formation in brine concentration and evaporation systems |
| 08/14/2008 | WO2008097671A1 Silane substituted polyethylene oxide reagents and method of using for preventing or reducing aluminosilicate scale in industrial processes |
| 08/14/2008 | WO2008095945A1 Process and polymer for preventing ba/sr scale with incorporated detectable phosphorus functionality |
| 08/14/2008 | CA2677249A1 Silane substituted polyethylene oxide reagents and method of using for preventing or reducing aluminosilicate scale in industrial processes |
| 08/13/2008 | CN101239757A Desulfurizing waste water processing device antiscaling agent and antiscaling method |
| 08/13/2008 | CN100410191C Corrosion inhibitor for cooling system for nuclear power plant |
| 08/06/2008 | CN101235145A Method for preparing glycine/aspartic acid copolymer used as green scale inhibitor |
| 08/06/2008 | CN100408488C Agent for softening hard water |
| 08/06/2008 | CN100408154C Non-phosphate alkaliproof highly effective chelating dispersion stabilizer, preparation process and use thereof |
| 08/05/2008 | US7407623 Steam condensate corrosion inhibitor compositions and methods |
| 08/05/2008 | CA2162313C Methods for controlling scale formation in aqueous systems |
| 07/31/2008 | WO2008090219A1 Method for derusting metallic surfaces |
| 07/31/2008 | WO2007136831A3 Robotic pool cleaner with internal ultraviolet water sterilization |
| 07/31/2008 | US20080179564 Method of preventing or reducing aluminosilicate scale in industrial processes |
| 07/30/2008 | EP1950327A1 Method for derusting metallic surfaces |
| 07/30/2008 | EP1432534B1 Method for treatment against corrosion and depositions in domestic supply water installations and apparatus therefor |
| 07/30/2008 | CN101230132A Corrosion and scale inhibitor epoxy succinic acid/epoxy ethylbenzene sulfonic acid copolymer and preparation method thereof |
| 07/29/2008 | US7405263 Scale inhibition in mineral oil extraction, corrosion inhibition in aqueous systems; greater inhibition toward calcium phosphate and phosphonate; polymerizing methacrylic acid in the presence of isopropanol to modify, then amidating with an aminoalkylsulfonic acid such as taurine |
| 07/24/2008 | DE102007003748A1 Removal of biofilm from water supply system, introduces acid and catalyst to work on biofilm for given interval, then alkali to restore pH to desired value |
| 07/23/2008 | EP1947158A1 Scale control composition for high scaling environments |
| 07/23/2008 | EP1947062A2 Hydrophobically modified polymers and its use as dispersant and for preventing scale |
| 07/23/2008 | CN100404439C Oil repellents |
| 07/23/2008 | CN100404438C Water treatment agent and preparation method thereof |
| 07/17/2008 | US20080169243 Method of inhibiting scale formation and deposition in desalination systems |
| 07/17/2008 | DE112005001172T5 Flusskreislaufsteuerung einer HPLC-Pumpe mit konstantem Fluss, um einen Niedrigflussbetrieb zu ermöglichen Flow control circuit of an HPLC pump at a constant flow, to enable a low flow operation |
| 07/16/2008 | CN101219782A Method for producing slow-dissolve ball type sodium hexametaphosphate and special equipment |
| 07/10/2008 | US20080164213 Passing moderately saline water (0.05-1.00% salts) through an ion exchanger saturated with calcium and magnesium ions; desalting to produce an effluent containing lower sodium content but having increased salts of calcium and magnesium; soil stabilization, pond sealing; root rot; animal potability |