| 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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| 08/06/1992 | CA2041198A1 Method and apparatus for ionizing fluids utilizing a capacitive effect |
| 08/05/1992 | EP0497611A1 Biodegradable polymers, process for preparation of such polymers, and compositions containing such polymers |
| 08/04/1992 | US5135677 Process for producing acid-type maleic acid polymer and water-treating agent and detergent additive containing said polymer |
| 08/04/1992 | US5135661 Antideposit agents in mixture of hydrolyzed polymaleic anhydride and hydrolyzed terpolymer containing maleic anhydride |
| 08/02/1992 | CA2059675A1 Biodegradable free-radical addition polymers |
| 07/29/1992 | CN1017611B Scale inhibitor and method of inhibiting scale |
| 07/22/1992 | EP0495451A1 Water softening process |
| 07/22/1992 | CN1017521B Full water treatment apparatus for use in soft drink dispensing system |
| 07/15/1992 | EP0258237B1 Method and apparatus for reducing pitting in copper water pipes |
| 07/07/1992 | US5128427 Terpolymer from sodium arcylate, sodium salt of amps and allyl ether of glycerol |
| 07/07/1992 | US5128045 Method for stabilizing metal ions in the presence of biofouling organisms |
| 07/04/1992 | CA2046825A1 Composition and method for controlling silica deposition in aqueous systems |
| 06/25/1992 | WO1992010433A1 Use of water-soluble natural graft polymers as water-treatment agents |
| 06/24/1992 | EP0491391A1 Water treatment agent |
| 06/24/1992 | CN1062198A Automatic drug feeding device for boiler water feed and oxygen isolation method |
| 06/23/1992 | US5124047 Allylphosphonate copolymer, in aqueous systems |
| 06/23/1992 | US5124046 Adding synergistic mixture of water soluble terpolymer and phosphonate |
| 06/16/1992 | US5122278 Inhibition of deposition in aqueous systems |
| 06/11/1992 | DE4038908A1 Verwendung von wasserloeslichen gepfropften naturstoffen als wasserbehandlungsmittel Use of natural materials wasserloeslichen grafted as a water treatment agent |
| 05/29/1992 | WO1992008542A1 Method for regenerating scale solvent |
| 05/26/1992 | US5116513 Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor |
| 05/20/1992 | EP0485882A1 A polymer utilized in water system and a method of treatment of water system |
| 05/14/1992 | DE4035580A1 Descaling compsns. - comprising mixt. of protonic and Lewis acids |
| 05/12/1992 | US5112521 Scale reduction and disinfecting of pools |
| 05/12/1992 | US5112496 Methods for inhibition of scale in high brine environments |
| 05/12/1992 | US5111887 Method for reducing radioactivity of oilfield tubular goods contaminated with radioactive scale |
| 05/12/1992 | CA1300467C Detersive systems with a dispersed aqueous-organic softening agent forhardness removal |
| 05/05/1992 | CA1299965C Use of sulfamic acid to inhibit phosphonate decomposition by chlorine-bromine mixtures |
| 05/02/1992 | CA2050017A1 Method of inhibiting scale deposits |
| 04/29/1992 | CN2102924U Mineralize contaminant separater for kettle |
| 04/29/1992 | CN1060639A Compounding method of contaminant release agent |
| 04/28/1992 | US5108619 Using polymethacrylic acid polymer initiated by benzoyl or lauroyl peroxide |
| 04/22/1992 | EP0481669A2 Monofluorophosphate solubility inhibitor for lead in potable water sources |
| 04/22/1992 | EP0481668A1 Multifunctional scale inhibitors |
| 04/21/1992 | US5106491 Device for eliminating boiler scale using arrangement of magnetic coils and baffle plates |
| 04/20/1992 | WO1992006925A1 Apparatus and method for hydrolysis of cyanide-containing liquids |
| 04/16/1992 | WO1992006044A1 Method for removing scale from a solvent |
| 04/16/1992 | CA2053164A1 Multifunctional scale inhibitors |
| 04/16/1992 | CA2053163A1 Monofluorophosphate solubility inhibitor for lead in potable water sources |
| 04/15/1992 | EP0480589A1 Scale inhibition |
| 04/15/1992 | EP0480216A1 Process for the treatment of wash water from gas scrubbers of an iron ore reduction plant |
| 04/14/1992 | CA1298831C Cationic and anionic lignin, amines |
| 04/14/1992 | CA1298801C Method of controlling the composition of a stable microbial mixed biocenosis |
| 04/08/1992 | EP0479465A2 Inhibition of scale |
| 04/08/1992 | EP0479462A1 Method for inhibiting scale formation |
| 04/07/1992 | US5102555 Method of stabilizing mangnaese in aqueous systems |
| 04/07/1992 | US5102515 Ionizing electroconductive fluid using long resistive path, inhibited current flow; preventing precipitation of dissolved solids |
| 04/06/1992 | CA2052706A1 Inhibition of scale |
| 04/01/1992 | EP0478018A1 Treatment of aqueous medium with copolymers containing acrylamidoalkane sulfonic acid |
| 03/31/1992 | US5100558 Method for controlling silica deposition in aqueous systems |
| 03/30/1992 | CA2052397A1 Scale inhibition |
| 03/25/1992 | CN1059707A Rapid descaling method for boiler |
| 03/18/1992 | CN1015890B Scale inhibitor |
| 03/17/1992 | US5096595 Control of scale in aqueous systems using certain phosphonomethyl amine oxides |
| 03/11/1992 | EP0474540A2 Scale inhibitor for calcium-type scale |
| 03/04/1992 | CN2097828U Strong magnetization, no-scale water-boiling unit |
| 03/04/1992 | CN1059172A High-effective scale remover for aluminium kettle |
| 03/03/1992 | US5093451 Polysilsesquioxanes |
| 03/03/1992 | US5093020 Catalyzed chelation |
| 03/03/1992 | US5093005 Method for controlling scale |
| 03/03/1992 | US5092404 Polyvinyl sulfonate scale inhibitor |
| 03/03/1992 | CA1296594C Ampiq copolymers as scale inhibitors |
| 02/26/1992 | EP0471711A1 Use of water-soluble copolymerizates obtained from monoethylenically unsaturated carboxylic acids and vinylimidazole (derivatives) as water-softening agents. |
| 02/25/1992 | US5091108 N,n,n*,n*-tetrasubstituted phenylenediamine |
| 02/18/1992 | US5089150 Method of increasing retention of scale inhibitors in subterranean formations |
| 02/12/1992 | EP0470553A1 Cooling system cleaning solutions |
| 02/11/1992 | US5087376 Treating water with N,N-bis/phosphonomethyl/taurine or cysteic acid |
| 02/11/1992 | US5087371 Method for regenerating scale solvent |
| 02/05/1992 | CN1058384A Deoxidizer for boiler water and production thereof |
| 02/04/1992 | US5085794 Oligomer containing phosphinate compositions and their method of manufacture |
| 02/04/1992 | US5085709 Chelation of alkaline earth metal and radioactive metal sulfates with polyaminocarboxylic acid chelant and a synergist to remove radioactivity and impurity |
| 02/03/1992 | CA2044364A1 Phosphinate inhibitor for scale squeeze applications |
| 01/29/1992 | EP0328567B1 Process and installation for preventing corrosion of water pipes |
| 01/28/1992 | US5084105 Sulfate scale dissolution |
| 01/22/1992 | EP0467505A2 Method and apparatus for treating fluid |
| 01/22/1992 | EP0467287A2 Maleic anhydride copolymer |
| 01/21/1992 | US5082492 Brines |
| 01/21/1992 | CA2041204A1 Method and apparatus for treating fluid |
| 01/21/1992 | CA1294420C Boiler corrosion inhibitor compositions and method |
| 01/14/1992 | US5080801 Adding acrylic polymer blend |
| 01/08/1992 | EP0465286A1 Grafted polysaccharides, process for their preparation and their application as sequestering agents |
| 01/08/1992 | CN1057682A Separately-packed scale-removing agent and its process |
| 01/07/1992 | US5078894 Formulations for iron oxides dissolution |
| 01/07/1992 | US5078891 Method of controlling silica deposition in aqueous systems |
| 01/07/1992 | US5078879 Method for controlling silica/silicate deposition in aqueous systems using 2-phosphonobutane tricarboxylic acid-1,2,4 and anionic polymers |
| 12/31/1991 | US5077364 Polymerization of maleic anhydride |
| 12/31/1991 | US5076941 Monofluorophosphate solubility inhibitor for lead in potable water sources |
| 12/17/1991 | US5073339 Method of inhibiting corrosion and scale formation in aqueous systems |
| 12/17/1991 | US5073299 Antifouling agent for treating water supply system |
| 12/17/1991 | US5073270 Use of reducing agents to control scale deposition from high temperature brine |
| 12/17/1991 | US5073269 Preparation of water-soluble copolymers of maleic acid and use thereof as water treatment agents |
| 12/11/1991 | EP0460797A1 Methods of controlling scale formation in aqueous systems |
| 12/10/1991 | US5071582 Of an ethylendiaminetetraacetic acid salt, a gluconate salt, a soluble nitrate salt and a silicon compound corrosion inhibitor |
| 12/10/1991 | CA1292866C Aminomethylenephosphonate compositions |
| 12/04/1991 | EP0459661A1 Silica scale inhibition |
| 12/04/1991 | EP0458981A1 Deoxidizer for boiler and method of removing dissolved oxygen from boiler water |
| 12/04/1991 | CN1014979B Making method used in oil field for flocculated-etching-retarding agent |
| 12/03/1991 | US5069798 Cloud point of at least 25 parts per million |
| 11/28/1991 | DE4016753A1 Poly:hydroxy:alkan:amino-bis(methylene:phosphonic acid) cpds. - useful as complexing agents, and prevent scaling e.g. machine cleaning and washing plant |
| 11/26/1991 | CA1292582C Hot process liquid treatment method and apparatus |