| 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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| 02/24/1993 | CN1069296A Cyclic cleaning method and cleaning agent for calcareous scale |
| 02/18/1993 | WO1993002973A1 Anti-fouling agent for wet surfaces |
| 02/10/1993 | EP0526786A1 Hydroxamic acid containing polymers used as corrosion inhibitors |
| 02/10/1993 | CN1068802A Multifunctional water treating agent contg. organic phosphine |
| 02/10/1993 | CN1068801A Silica scale inhibition |
| 02/10/1993 | CN1068800A Descaling method for water producing machine on vessels |
| 02/09/1993 | CA1313503C Full water treatment apparatus for use in soft drink dispensing system |
| 02/03/1993 | EP0526181A1 Controlling mineral deposits in cooling systems |
| 02/03/1993 | EP0525923A1 Multipurpose scale preventer/remover |
| 02/03/1993 | EP0525835A2 Scale removal and prevention device |
| 02/03/1993 | EP0525166A1 Composition and methods for removing or preventing biofilm. |
| 02/02/1993 | US5183590 Mixing aminohydroxysuccinic acid compound with aqueous solution to prevent corrosion of ferrous metals |
| 02/02/1993 | US5183574 Adding a copolymer of methacrylate acid and styrenesulfonic acid or styrene sulfonic acid water soluble salts to aqueous system |
| 02/02/1993 | US5183573 Multipurpose scale preventer/remover |
| 01/30/1993 | CA2048059A1 Controlling mineral deposits in cooling systems |
| 01/27/1993 | CN1068313A Water treating agent for boilers |
| 01/27/1993 | CN1068312A Corrosion inhibiting antisludging agent for circularly-cooling sea water |
| 01/26/1993 | US5182343 Dispersants, antiscaling agents, fiber treatment, plating bath additive, excavation-muddy water-viscosity-adjusting agent |
| 01/26/1993 | US5182028 Monofluorophosphate for calcium carbonate scale control and iron and manganese stabilization |
| 01/26/1993 | US5182027 Treating with an oxidizing agent and biocide |
| 01/26/1993 | US5181567 Injection of quaternary amines as antideposit agents |
| 01/19/1993 | US5180790 Terpolymer of acrylic acid, methacrylic acid and itaconic acid for sequestering metallic cations |
| 01/19/1993 | US5180498 Polymers for the treatment of boiler water |
| 01/07/1993 | DE4122490A1 Liq. water softener compsns. - contg. alkali metal or poly:carboxylate salt, water-soluble alcohol and surfactant opt. with phosphonic acid |
| 01/05/1993 | US5176849 Corrosion resistance |
| 01/05/1993 | US5176848 Corrosion control composition |
| 12/16/1992 | CN1067074A Method for tceating boiler scale |
| 12/15/1992 | US5171477 Corrosion inhibition in chelant solutions |
| 12/15/1992 | US5171460 Method for preventing metal carbonate scale formation in a well penetrating a subterranean formation |
| 12/15/1992 | US5171459 Phosphate ester or phosphonate calcium carbonate inhibitor, alkyldiphenyl oxide sulfonate sulfide dispersant |
| 12/15/1992 | US5171451 Simultaneous use of water soluble polymers with ozone in cooling water systems |
| 12/15/1992 | US5171450 Monitoring and dosage control of tagged polymers in cooling water systems |
| 12/14/1992 | CA2066081A1 Phosphonate-containing polymers used as scale and corrosion inhibitors |
| 12/09/1992 | EP0517470A2 Phosphinic acid-containing polymers and their use in preventing scale and corrosion |
| 12/09/1992 | EP0517453A1 Controlling scale in black liquor evaporators |
| 12/09/1992 | CN1066833A Equipment for de-alkalization of industrial waste water by sulfur dioxide |
| 12/08/1992 | US5169563 Mixture of aliphitic hydroxycarboxylic acid and polyamine; corrosion resistance |
| 12/08/1992 | US5169537 Antideposit agent |
| 12/02/1992 | EP0516382A1 Polyether polyamino methylene phosphonates for high pH scale control |
| 12/02/1992 | EP0516357A1 Anionic/cationic polymer mixture for scale inhibition |
| 12/02/1992 | EP0516346A1 Telomers |
| 12/02/1992 | EP0516305A1 Simultaneous use of water soluble polymers with ozone in cooling water systems |
| 12/02/1992 | CN2123531U Equipment for dealkali of industrial waste water by so2 |
| 12/02/1992 | CN2123530U Softener for automobile cooling water |
| 12/01/1992 | US5167866 Antiscaling agents |
| 12/01/1992 | US5167835 Method of scavenging oxygen from boiler waters with substituted quinolines |
| 12/01/1992 | US5167834 Oxidation of condensate from geothermal brine; air pollution control |
| 12/01/1992 | US5167828 Phosphinate-containing polymers for controlling scale in underground petroleum-containing formations and equipment associated therewith |
| 12/01/1992 | CA2070091A1 Telomers |
| 12/01/1992 | CA2070078A1 Controlling scale in black liquor evaporators |
| 12/01/1992 | CA2069526A1 Anionic/cationic polymer mixture for scale inhibition |
| 12/01/1992 | CA2060775A1 Corrosion inhibition in chelant solutions |
| 11/25/1992 | CN1066432A Recipe and prodn. method of descaling and antiscale agent |
| 11/24/1992 | US5166074 Method of detecting the initial concentration of a water-treatment chemical in a diluted aqueous system |
| 11/17/1992 | WO1992020629A1 Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
| 11/17/1992 | US5164468 Antiscaling agents for industrial water systems |
| 11/17/1992 | CA2103141A1 Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
| 11/12/1992 | WO1992019557A1 Limescale remover |
| 11/12/1992 | WO1992019549A1 Limescale remover |
| 11/04/1992 | EP0511850A1 Terpolymer of itaconic acid for high PH scale control |
| 11/03/1992 | US5160637 Apparatus and method for hydrolysis of cyanide-containing liquids |
| 11/03/1992 | US5160630 Scale inhibition |
| 10/31/1992 | CA2067533A1 Terpolymer of itaconic acid for high ph scale control |
| 10/28/1992 | EP0510989A1 Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion, inhibiting precipitation of dissolved manganese and iron and reducing soluble lead in potable water |
| 10/27/1992 | US5158685 Using mixture of hydroxyphosphonocetic acid and an acrylic polymer |
| 10/27/1992 | US5158684 Additing thermally stable chelant |
| 10/25/1992 | CA2066991A1 Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion |
| 10/21/1992 | CN2119429U Pi shaped device for removing water scale |
| 10/21/1992 | CN2119421U Device for preventing and removing scale |
| 10/20/1992 | US5156744 Process for inhibiting scale using maleic anhydride polymerized in reactive aromatic hydrocarbons |
| 10/14/1992 | EP0508953A1 Method for scale, corrosion and microbiological control in aqueous systems |
| 10/14/1992 | CN2118731U Ionic device for preventing scale |
| 10/14/1992 | CN1065258A Water pretreatment using calcium carbide slurry |
| 10/09/1992 | CA2065201A1 Method for scale, corrosion and microbiological control in aqueous systems |
| 10/07/1992 | CN2118071U Electronic scale preventing and removing instrument |
| 10/06/1992 | US5152904 Water softening process |
| 10/06/1992 | US5152902 Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor |
| 10/06/1992 | US5152403 Treatment of seawater evaporator aqueous systems with scale-inhibiting mixture of polymaleic anhydride and a carboxyl-containing acrylic polymer |
| 10/04/1992 | CA2062210A1 Mixed polymers for preventing scale caused by mineral processing water |
| 10/01/1992 | WO1992016463A1 Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor |
| 10/01/1992 | WO1992016462A1 Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor |
| 09/30/1992 | EP0506339A1 Monofluorophosphate for calcium carbonate scale control and iron and manganese stabilization |
| 09/29/1992 | US5151196 Purification of solutions for scale removal solutions by acidification and chelation, separation and precipitation |
| 09/29/1992 | CA2063952A1 Monofluorophosphate for calcium carbonate scale control and iron and manganese stabilization |
| 09/23/1992 | EP0504520A2 On-stream monitoring of a treating agent in a cooling water system |
| 09/16/1992 | EP0503589A1 Electrodialysis reversal process and apparatus with bipolar membranes |
| 09/16/1992 | CA2059963A1 Water soluble terpolymers and methods of use thereof |
| 09/15/1992 | US5147555 Methods of controlling scale formation in aqueous systems |
| 09/13/1992 | CA2060627A1 Transport and deposit inhibition of copper in boilers |
| 09/08/1992 | US5145515 Passing acidified constituents through conduit packed with metal higher in electromotive series than copper |
| 09/02/1992 | CN2114655U Lolunz effect sea water dosalination system |
| 09/01/1992 | US5143622 Phosphinic acid-containing polymers and their use in preventing scale and corrosion |
| 08/26/1992 | EP0500266A2 A method of and composition for retarding corrosion of metal surfaces in contact with boiler water systems |
| 08/25/1992 | CA1306661C All-in-one boiler water treatment composition |
| 08/22/1992 | CA2053814A1 Method of retarding corrosion of metal surfaces in contact with boiler water systems which corrosion is caused by dissolved oxygen |
| 08/20/1992 | WO1992013807A1 Composition and methods for removing or preventing biofilm |
| 08/18/1992 | US5139702 Scale and corrosion inhibitors |
| 08/12/1992 | EP0498098A1 Method and apparatus for ionizing fluids utilizing a capacitive effect |
| 08/12/1992 | EP0497812A1 A process of combatting microorganisms. |
| 08/11/1992 | US5137657 Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion |