| 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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| 06/15/1994 | CN2168863Y Purifier for softening rural well water and removing iron and manganese |
| 06/15/1994 | CN1087877A Electrochemical descaling apparatus |
| 06/14/1994 | US5320757 Method of inhibiting calcium oxalate scale deposition |
| 06/09/1994 | WO1994012571A2 Mixtures of unsaturated carboxylic acid polymerizates and use |
| 06/09/1994 | WO1994012438A1 Scale inhibiting composition |
| 06/09/1994 | CA2149746A1 Mixtures of unsaturated carboxylic acid polymerizates and use |
| 06/08/1994 | EP0599888A1 Anti-fouling agent for wet surfaces |
| 06/08/1994 | CN1087649A Graft Copolymers of unsaturated monomers and sugars, a process for the production and the use thereof |
| 06/07/1994 | US5318719 Graft polymers as biodegradable detergent additives |
| 05/26/1994 | WO1994011309A1 Method and appliance for removing at least one constituent from a solution |
| 05/26/1994 | WO1994011306A1 Method of avoiding calcareous deposits on heated, water-cooled tools, cooler for the implementation of the method and use of said cooler |
| 05/26/1994 | DE4239076A1 Mischungen aus Polymerisaten von monoethylenisch ungesättigten Dicarbonsäuren und Polymerisaten ethylenisch ungesättigter Monocarbonsäuren und/oder Polyaminocarbonsäuren und ihre Verwendung Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and / or polyaminocarboxylic acids and their use |
| 05/24/1994 | CA1329752C Corrosion control |
| 05/18/1994 | EP0589966A4 Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
| 05/18/1994 | CN2165379Y Demostic gas hot-water shower antiscale device |
| 05/17/1994 | US5311925 Reduces potential for calcium fluoride scale formation |
| 05/17/1994 | CA1329474C Cooling water corrosion control method and composition |
| 05/11/1994 | WO1994010096A1 Copolymers of polyamino acids as scale inhibition agents |
| 05/11/1994 | CA2146358A1 Copolymers of polyamino acids as scale inhibition agents |
| 05/04/1994 | EP0594806A1 Composition and method for scavenging oxygen |
| 05/03/1994 | US5308498 Hydroxamic acid containing polymers used as corrosion inhibitors |
| 04/26/1994 | US5306429 Copolymers of polyamino acids as scale inhibition agents |
| 04/26/1994 | CA1328885C Cotelomer compounds |
| 04/20/1994 | CN2162460Y Soften water equipment for boiler |
| 04/20/1994 | CN1085525A Automatic scale removing agent for water tank of vehicle |
| 04/14/1994 | WO1994007803A1 Removal of magnetite deposits in water-supply systems |
| 04/12/1994 | US5302677 Scale inhibitors, complexing agents, detergent builders |
| 04/12/1994 | US5302297 Adding carboxylic chelating agent to interfere with antiscaling agent and to precipitate inorganic salt which can then be separated |
| 04/12/1994 | US5302293 Method of controlling iron in produced oilfield waters |
| 04/12/1994 | US5302292 Method for treating ground water contamination |
| 04/06/1994 | EP0590879A1 Method and composition for inhibiting silica and silicate deposition |
| 04/06/1994 | EP0589966A1 Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
| 04/05/1994 | US5300231 Controlling silica/silicate deposition using phosphonate combinations |
| 04/05/1994 | CA1328328C Water soluble polymers containing allyloxybenzenesulfonate monomers |
| 03/31/1994 | DE4232612A1 Entfernung von Magnetitbelägen in wasserführenden Systemen Distance from Magnetitbelägen in water systems |
| 03/29/1994 | US5298221 Inhibition of scale formation and corrosion by sulfonated organophosphonates |
| 03/22/1994 | US5296470 Polydextrose backbone with grafted water soluble unsaturated monomer |
| 03/16/1994 | EP0586998A1 Process and device for the treatment of waste water containing organic matter, especially chlorinated organic compounds from the production of epichlorohydrine |
| 03/15/1994 | US5294371 Hydroxyphosphonoacetic acid derivatives |
| 03/09/1994 | CN1083492A Production of a biodegradable copolymer |
| 03/08/1994 | US5292449 Scale inhibiting composition |
| 03/03/1994 | WO1994002549A1 LOWERING THE pH OF TEXTILE PROCESSING SOLUTION WITH AN ACID/BASE SALT AS A pH ADJUSTING AGENT |
| 02/23/1994 | CN1082515A Natural plant and mineral type boiler scale cleaning agent |
| 02/23/1994 | CN1082514A Electronic water scale cleaning device |
| 02/22/1994 | US5288783 Preparation of salt of polyaspartic acid by high temperature reaction |
| 02/22/1994 | US5288411 Using polyacrylates and phosphonolated amines dispersants |
| 02/22/1994 | US5288410 Adding polyacrylic acid, copolymer of allyl sulfonate and maleic anhydride, copolymer of acrylic acid and acrylamide, and additives |
| 02/10/1994 | DE4221381C1 Pfropf-Copolymerisate von ungesättigten Monomeren und Zuckern, Verfahren zu ihrer Herstellung und ihre Verwendung Graft copolymers of unsaturated monomers and sugars, to processes for their preparation and their use |
| 02/08/1994 | US5284590 Adding low molecular weight acrylic acid-2-methylpropyl sulfonic acid type polymers |
| 02/03/1994 | WO1994002410A1 BOILER OPERATION WITH DECREASED NOx AND WASTE WATER DISCHARGE |
| 02/03/1994 | WO1993024661A3 Use of condensation products of aspartic acid as deposit-prevention agents in the concentration of sugar juices |
| 02/03/1994 | CA2140885A1 Boiler operation with decreased no and waste water discharge |
| 02/01/1994 | US5282995 Aqueous alkaline solution of diethylenetriaminepentaaacetic acid chelating agent and formate anion catalyst |
| 02/01/1994 | US5282976 Adding terpolymer of acrylic or methacrylic acid, vinyl acetate or alcohol, allyloxyhydroxyalkylsulfonic acid or salt |
| 01/26/1994 | EP0580275A1 Method and apparatus for providing an ionic change in fluid |
| 01/26/1994 | CN2154260Y Water treatment device with electronic anti-filth and filth-eliminate |
| 01/25/1994 | US5281537 Adding nutrient to sample slipstream, the nutrient differentiating between chemical and biological fouling |
| 01/25/1994 | CA1326430C Method for barium sulfate and/or calcium oxalate scale control |
| 01/25/1994 | CA1326429C Process to inhibit scale formation and corrosion caused by manganese in water systems by use of aminophosphonic acids |
| 01/22/1994 | CA2099174A1 Scale inhibitor composition |
| 01/22/1994 | CA2086784A1 Method and apparatus for providing an ionic change in fluid |
| 01/20/1994 | WO1994001476A1 Graft copolymers of unsaturated monomers and sugars, process for producing the same and their use |
| 01/19/1994 | CN2153548Y Water pressure transporting type device for adding scale remover to water |
| 01/19/1994 | CN2153545Y Portable ion-exchange water feed bucket |
| 01/14/1994 | CA2100297A1 Method of controlling iron in produced oilfield waters |
| 01/11/1994 | US5277823 Adding a mixture of (meth)acrylic acid or maleic acid or salt homopolymer or terpolymer, magnesium ion antiscaling agent |
| 01/05/1994 | EP0577422A1 Zinc, iron and manganese stabilization using polyeter polyamino methylene phosphonates |
| 01/05/1994 | EP0577016A1 A method of removing scale |
| 01/05/1994 | DE4221457A1 Protective compsn. for hot water heating plant with oxygen@-permeable plastic pipes - contains reducing agent and complexing agent |
| 01/02/1994 | CA2099704A1 Zinc, iron and manganese stabilization using polymer polyamino methylene phosphonates |
| 12/22/1993 | CN1023207C Deoxidizer for boiler water and producting thereof |
| 12/21/1993 | US5271862 Inhibition of silica and silicate deposition in cooling water systems |
| 12/21/1993 | US5271847 Polymers for the treatment of boiler water |
| 12/14/1993 | US5269956 Compatible corrosion inhibitor combinations |
| 12/09/1993 | WO1993024661A2 Use of condensation products of aspartic acid as deposit-prevention agents in the concentration of sugar juices |
| 12/09/1993 | WO1993024199A1 Method for removing alkaline sulfate scale |
| 12/08/1993 | CN1079209A Water scale remover with magnetotherapeutic health purpose |
| 12/07/1993 | US5268108 Control of scale deposition in geothermal operations |
| 12/07/1993 | CA1324941C Water treatment polymers and methods of use thereof |
| 12/02/1993 | DE4217847A1 Verwendung von Kondensaten der Asparaginsäure als Belagsverhinderer bei der Eindampfung von Zuckersäften The use of condensates of aspartic acid as scale inhibitors in the evaporation of sugar juices |
| 11/30/1993 | US5266493 Monitoring boric acid in fluid systems |
| 11/25/1993 | WO1993023452A1 Salts of polyaspartic acid by high temperature reaction |
| 11/23/1993 | US5264510 Terpolymer, containing first monomer from vinyl acetate, vinyl carbonate, or vinyl ether, second one is ethylenically unsaturated monocarboxylic acid and third is an anhydride |
| 11/23/1993 | US5264179 Scavengers comprising starch derivatives |
| 11/23/1993 | US5263541 Polyvinyl sulfonate, polyacrylic acid; enhanced oil recovery |
| 11/23/1993 | CA1324559C Process for treating cooling water |
| 11/19/1993 | CA2094420A1 Composition and method for controlling silica and water soluble silicate deposition |
| 11/16/1993 | US5262061 Inhibiting precipitation of dissolved zinc, iron and manganese, and their reaction products, in water supply systems |
| 11/16/1993 | US5261491 Polyaminomethylene phosphonates for waters having high barium content and low pH |
| 11/10/1993 | EP0569220A2 Stabilization of polyether polyamino methylene phosphonate scale inhibitors |
| 11/09/1993 | US5259985 Calcium carbonate scale inhibitor having organophosphonate, water soluble acrylic or maleic copolymer and citric acid |
| 11/09/1993 | US5259980 Aqueous alkaline solution of polyaminocarboxylic acid and synergistic amount of oxalate anion; strontium/barium sulfates |
| 11/09/1993 | US5259974 High dissolved solids, and high levels of calcium carbonate |
| 11/08/1993 | CA2095395A1 Stabilization of polyether polyamino methylene phosphate scale inhibitors against degradation by bromine and chlorine biocides |
| 11/03/1993 | EP0568171A1 Calcium carbonate antiprecipitating agents |
| 11/03/1993 | EP0568159A1 Apparatus and method for treating water |
| 11/03/1993 | CN2145183Y Contaminant release sac-bag of mineralize, magnetize water |
| 11/02/1993 | CA1323824C Polymers for boiler water treatment |
| 10/29/1993 | CA2095108A1 Apparatus and method for treating water |
| 10/28/1993 | WO1993021483A1 Method of cleaning and maintaining hot water heaters |