| Patents for C02F 5 - Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (8,632) |
|---|
| 11/14/1991 | WO1991017238A1 Extended-release plaque preventing and dissolving compositions and their method of use |
| 11/14/1991 | WO1991017124A1 New formulations for iron oxides dissolution |
| 11/13/1991 | EP0456272A1 Cleaning agent for drinking water installations |
| 11/13/1991 | EP0456271A1 Cleaning agent for drinking water installations |
| 11/12/1991 | US5064563 Hydrogen peroxide polymerization catalyst copper or iron ions and alkali to neutralize acid; detergent builder |
| 11/06/1991 | EP0454915A1 Method for controlling silica/silicate deposition in aqueous systems |
| 11/05/1991 | US5062962 Polyepoxcysuccinic acid |
| 11/02/1991 | CA2015939A1 Method for controlling silica/silicate deposition in aqueous systems using phosphonates and carboxylic/sulfonic polymers |
| 10/30/1991 | EP0454323A1 Phosphinate oligomers, compositions containing them and methods of making and using them |
| 10/29/1991 | US5061373 Process for treating condensate of steam derived from geothermal brine |
| 10/22/1991 | US5059333 Dissolution of sulfate scales |
| 10/17/1991 | CA2040179A1 Metal ion complexes for use as scale inhibitors |
| 10/16/1991 | EP0451434A1 Method for controlling deposits and corrosion in water treatment applications |
| 10/15/1991 | US5057228 Metal ion complexes for use as scale inhibitors |
| 10/09/1991 | CN2086258U Water treatment medicine-adding equipment |
| 10/01/1991 | US5053161 Composition for inhibiting scale in water systems |
| 09/25/1991 | EP0431085A4 Method of decontaminating earth and/or natural gas processing equipment |
| 09/25/1991 | EP0418374A4 Sulfate scale dissolution |
| 09/24/1991 | US5051532 N,N-bis-phosphonomethyl taurine N-oxide and water-soluble salts thereof |
| 09/24/1991 | US5051401 Inhibition of mineral deposition by phosphorylated and related polyanionic peptides |
| 09/24/1991 | US5051281 Process and plant for protecting water pipeworks from corrosion |
| 09/24/1991 | US5051197 Aminopolycarboxylic acids and salts with organosilicone compounds for scale removal in wells |
| 09/18/1991 | EP0447120A1 A liquid membrane catalytic scale dissolution method |
| 09/18/1991 | CN1013955B Scale inhibition in water systems |
| 09/17/1991 | US5049310 Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom |
| 09/17/1991 | US5049304 Phosphonocarboxylic acid, aminophosphonic acid and aminophosphonic acid oxide |
| 09/17/1991 | US5049297 Sulfate scale dissolution |
| 09/17/1991 | CA1289293C Polymer-zinc corrosion inhibitor |
| 09/17/1991 | CA1289145C Hydroxyphosphono carboxylic acids |
| 09/10/1991 | US5047078 Phosphate fertilizer and antiscaling agents |
| 09/03/1991 | US5045211 No drain acid treatment of pools |
| 08/27/1991 | US5043099 Mono- and di-substituted (diphosphonoalkylamino methyl)-4-hydroxybenzenesulfonic acid |
| 08/21/1991 | CN1013578B Corrosion-inhibitive and anti-sludge agent compond of derivatives of thiophosphate ester and imidazoline phosphate ester |
| 08/20/1991 | CA1287744C Method and compositions for increasing plant growth |
| 08/14/1991 | EP0441563A2 Detergent compositions containing vinyl carbamate compounds |
| 08/14/1991 | CN1053782A Ion exchanging type antiscale agent of softened water |
| 08/13/1991 | US5038861 Injecting aqueous solution of a polyquaternary amine |
| 08/07/1991 | CN2082267U Domestic scal-proof device using magnetization |
| 08/07/1991 | CN1053598A Method and solid material body for purification of fluids such as water, aqueous fluids and liquid fuels |
| 08/07/1991 | CA2035248A1 Vinyl carbamate compounds and detergent compositions containing them |
| 07/31/1991 | EP0438744A1 Use as water-treating agents of hydrosoluble copolymers based on monoethylenic and N-vinylamides |
| 07/31/1991 | CN1013359B Method of removing boiler scales |
| 07/30/1991 | US5035806 Scaling salt threshold inhibition and dispersion with hydrophilic/hydrophobic polymers |
| 07/25/1991 | DE4001808A1 Water sol co-polymer for water treatment - from unsatd. carboxylic acid and vinyl:amide deriv. |
| 07/24/1991 | EP0437722A1 Control of corrosion in aqueous systems using certain phosphonomethyl amine oxides |
| 07/24/1991 | CA2034655A1 Water treatment with water-soluble copolymers based on ethylenically unsaturated carboxylic acids |
| 07/23/1991 | US5034155 Sodium molybdate and benzotriazole as corrosion inhibitors with citric acid as an iron dispersant and a microbiocide |
| 07/23/1991 | CA1286490C Phosphonic acid/phosphate mixtures for controlling corrosion of metal and inhibiting calcium phosphate precipitation |
| 07/17/1991 | CN1013192B Water treatment agent consisting of mixed crystal salt of p-mo and process for preparing same |
| 07/16/1991 | US5032646 (Meth)acrylic acid/itaconic acid copolymers, their preparation and use as antiscalants |
| 07/16/1991 | US5032298 Antideposit |
| 07/16/1991 | US5032284 Process for treating ammonia and nitrite containing waters to prevent nitric oxide emissions therefrom |
| 07/16/1991 | US5032280 Liquid membrane catalytic scale dissolution method |
| 07/09/1991 | US5030748 Allyloxy alkylene monomers; antiscaling agents |
| 07/02/1991 | US5028340 Process for treating sulfide-containing water to reduce sulfide emissions therefrom |
| 06/26/1991 | EP0434484A1 Device for softening water by decarbonization |
| 06/26/1991 | CN1052485A Rreparation of biodegradable copolymers |
| 06/25/1991 | US5026481 Liquid membrane catalytic scale dissolution method |
| 06/21/1991 | WO1991009154A1 Deoxidizer for boiler and method of removing dissolved oxygen from boiler water |
| 06/19/1991 | EP0432906A1 Filter |
| 06/19/1991 | EP0432664A1 Control of scale in aqueous systems using certain phosphonomethyl amine oxides |
| 06/18/1991 | US5024783 Antiscaling, antideposit composition |
| 06/18/1991 | US5024769 Method of treating an arsenic-containing solution |
| 06/16/1991 | CA2022023A1 Control of scale in aqueous systems using certain phosphonomethyl amines |
| 06/12/1991 | EP0431085A1 Method of decontaminating earth. |
| 06/12/1991 | CN1052103A Method of saving salt |
| 06/12/1991 | CN1052100A Process for disposal of mg-bearing water |
| 06/11/1991 | US5023011 Treatment with phosphonates, scale modifying polymers, chelants, sodium gluconate, sodium molybdate, and sodium benzotriazole |
| 06/11/1991 | US5023001 Calcium phosphonate scale inhibition |
| 06/11/1991 | US5023000 Oligomer-containing phosphate scale inhibitors |
| 06/11/1991 | US5022926 Corrosion control |
| 06/05/1991 | EP0430574A2 Biodegradable, water-soluble polycarboxylic acid copolymers, compositions containing such copolymers, and methods of use of such copolymers |
| 06/05/1991 | EP0429631A1 Biocidal methods for recirculating water systems. |
| 06/05/1991 | CN1051916A Production of biodegradable copolymer |
| 06/04/1991 | US5021096 Circulating aqueous solution of hydroxyacetic acid and polysaccaride gum to form gel-sludge; dissolving with citric acid; heat exchangers |
| 05/29/1991 | EP0429307A2 Biodegradable, water-soluble graft copolymers, compositions containing such copolymers, and methods of use of such copolymers |
| 05/28/1991 | US5019343 Control of corrosion in aqueous systems using certain phosphonomethyl amines |
| 05/28/1991 | US5018577 Phosphinate inhibitor for scale squeeze applications |
| 05/23/1991 | CA2029633A1 Copolymers as biodegradable detergent additives |
| 05/23/1991 | CA2029631A1 Graft polymers as biodegradable detergent additives |
| 05/16/1991 | WO1991006511A1 Polyvinyl sulfonate scale inhibitor |
| 05/16/1991 | DE3937721A1 Softening water for drinking - by addn. of alkaline soln., ultrasound treatment and addn. of flocculant |
| 05/16/1991 | CA2029839A1 Method of detecting the concentration of an active ingredient in an aqueous system |
| 05/14/1991 | US5015390 Method for controlling scale deposition in aqueous systems using quaternary ammonium/maleic anhydride-type polymers |
| 05/14/1991 | US5015385 Process for promotion of microbial consumption of waste water fats |
| 05/08/1991 | CN2076547U Equipment for softening water |
| 05/07/1991 | US5013481 Boiler chemicals and method of preventing corrosion of boilers |
| 05/02/1991 | WO1991005742A1 Descaling composition and methods of use |
| 05/02/1991 | EP0425068A2 Process for the manufacture anti-scaling agents |
| 05/01/1991 | CN2076100U Dualpurpose tank used in water treatment and decontamination |
| 04/28/1991 | WO1991006217A1 A process of combatting microorganisms |
| 04/25/1991 | CA2013489A1 Process for the manufacture of aqueous solutions of anti-scaling agents and thus obtained solutions |
| 04/17/1991 | CN1012361B High efficiency boiler scale remover |
| 04/11/1991 | WO1991005741A1 Calcium hypochlorite compositions for inhibiting scale formation and a method for their use |
| 04/02/1991 | US5004549 Adding alkali metal salt of phosphonobutane polycarboxylic acid; controlling concentration and ph |
| 03/27/1991 | EP0418374A1 Sulfate scale dissolution. |
| 03/20/1991 | CN2073412U Adjustable type domestic water demineralizing apparatus |
| 03/19/1991 | US5000856 Method for controlling scale deposition in aqueous systems using allyl sulfonate/maleic anhydride polymers |
| 03/13/1991 | EP0416883A1 Inhibition of deposition in aqueous systems |
| 03/13/1991 | EP0416272A1 Formed organosiloxanaminpolycondensates, process for their preparation and their use |