Patents
Patents for C02F 5 - Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (8,632)
10/1996
10/31/1996WO1996033953A1 Stain corrosion and scale inhibitors
10/31/1996WO1996033952A1 Stabilization of water
10/31/1996WO1996033951A1 Treatment for inhibiting microbial adhesion on surfaces
10/31/1996CA2218882A1 Stabilization of water
10/30/1996EP0739313A1 Method for the supercritical water oxidation of organic compounds
10/30/1996CN2238833Y Electrostatic descaling apparatus
10/30/1996CN1134401A New-type scale-inhibiting dispersion agent for water treatment
10/30/1996CN1134400A Crystalline sheet sodium silicate
10/24/1996WO1996033137A1 MEANS OF AND PROCESS FOR REGULATING THE HARDNESS AND THE pH VALUE OF THE WATER IN FRESH-WATER AQUARIA
10/24/1996DE19514272A1 Mittel und Verfahren zur Regulierung der Härte und des pH-Wertes des Wassers von Süßwasseraquarien Means and methods for regulating the hardness and the pH of the water from freshwater aquariums
10/22/1996CA2171129A1 Water treatment polymer containing poly¬oxy-¬(hydroxymethyl)-1,2-ethanediyl|| macromonomers and methods of use thereof
10/22/1996CA1338656C Anti-scale and corrosion inhibitor
10/17/1996WO1996032523A1 A method and composition for inhibiting biological fouling in an irrigation system
10/16/1996EP0737215A1 Graft copolymers of unsaturated monomers and polyhydroxy compounds, process for producing them and their use
10/15/1996US5565106 Stabilization of polyether polyamino methylene phosphonate scale inhibitors against degradation by bromine and chlorine biocides
10/10/1996DE19512898A1 Polymers with recurring succinyl units which also include imino:di:succinate units
10/09/1996CN1132726A Composite regenerating agent for water processing
10/08/1996US5562830 Calcium carbonate scale controlling method
10/03/1996WO1996030430A1 Method of preparing mixtures of polyaspartic acids and acylated polyaspartic acids
10/03/1996WO1996030310A1 On premise water treatment apparatus
10/03/1996WO1996030309A1 On premise water treatment method
10/02/1996DE19529052C1 Inhibiting deposits in evaporative concn. of sulphite process black liquor
10/02/1996DE19511859A1 Verfahren zur Herstellung von Mischungen aus Polyasparaginsäuren und acylierten Polyasparaginsäuren A process for the preparation of mixtures of polyaspartic acids and acylated polyaspartic
10/02/1996CN1132241A Method for prodn. of medical-function beer
10/01/1996US5560823 Reversible flow supercritical reactor and method for operating same
09/1996
09/26/1996WO1996029291A1 Scale control in aqueous industrial systems
09/26/1996CA2215395A1 Scale control in aqueous industrial systems
09/25/1996EP0733664A2 Polymers of aspartic acid with sequestering activity, process for their preparation and use thereof
09/25/1996CN2235969Y Health-preservation ball
09/25/1996CN2235968Y Multi-function electronic scaling instrument
09/25/1996CN1131642A High polymeric iron aluminum chloride compound coagulant and its preparation method
09/17/1996US5556938 Acid catalyzed process for preparing amino acid polymers
09/11/1996EP0731058A1 Crystalline layered sodium silicate
09/11/1996CN1130599A High-efficient faintly acid scale preventing and removing agent
09/10/1996US5554721 Acid catalyzed process for preparing amino acid polymers
09/07/1996CA2169528A1 Crystalline sheet sodium silicate
09/04/1996EP0730152A2 Regulating water treatment agent dosage based on operational system stresses
09/03/1996US5552516 Mixing dissolved polysuccinimide with a crosslinking agent, isolating and collecting the product, and hydrolyzing crosslinked polysuccinimide
09/03/1996US5552514 Antiscaling agents of amino acid polymers for water treatment
08/1996
08/28/1996EP0458981B1 Deoxidizer for boiler and method of removing dissolved oxygen from boiler water
08/20/1996CA1338534C Method and system for variable frequency electromagnetic water treatment
08/14/1996CN1128735A Method for prepn. of three-purpose agent for preventing scale, corrosion-resistance and disinfection
08/07/1996EP0725093A2 Water-soluble or water-dispersible graft polymers, their preparation and their use
08/06/1996US5543490 Process for the preparation of polysuccinimide, polyaspartic acid and salts thereof, and the use of these compounds
08/06/1996US5542981 Process for removing mineral deposits from lagoon recycle lines
08/04/1996CA2168594A1 Water-soluble or water-dispersible graft copolymers, the preparation thereof and the use thereof
07/1996
07/31/1996EP0723940A1 Method for preventing deposit formation of scale in electric household appliances and such appliances using a complexing agent
07/31/1996CN2232038Y Improved flow bed water treatment equipment
07/30/1996US5540863 Mixtures of polyamino acids and citrate
07/25/1996WO1996022247A1 Aqueous, non-corrosive, composition with detergent for rust and stain removal
07/24/1996CN1127222A Flooding water treatment method by mixing clean water with sewage
07/17/1996CN1126702A Body detergent, shampoo, hair washing water filter, and shower head having said filter
07/11/1996WO1996021109A1 Compressor installation
07/10/1996EP0720588A1 Method and apparatus for treating fluid with radio frequency signals
07/10/1996CN2230758Y Scale-eliminating bag in kettle
07/09/1996US5534177 Compositions useful for removing products of metal corrosion
07/09/1996US5534157 Preventing calcium sulfite scale, flue gas scrubber systems
07/04/1996DE4447097A1 Verdichteranlage Compressor system
07/03/1996EP0719734A2 Nonionic polymers for the treatment of boiler water
07/03/1996EP0719317A1 Mixtures of polyamino acids and citrate
07/03/1996CN2230315Y Softening-controlled hard-water softening device capable of regenerating softening material
07/03/1996CN1125697A Application and its using method of biological decontaminant in circulation water system
06/1996
06/30/1996CA2165723A1 Process for preventing scale formation and deposits in appliances and appliances including a complexing agent
06/27/1996WO1996019415A1 Reversible flow supercritical reactor and method for operating same
06/27/1996CA2207490A1 Reversible flow supercritical reactor and method for operating same
06/26/1996EP0718313A2 N-cyanomethylated chitosan and hydrolysis products thereof
06/21/1996CA2155047A1 Nonionic polymers for the treatment of boiler water
06/20/1996DE4445155A1 Preventing accumulation of iron and manganese cpds. in ground water decontaminated by gas stripping
06/19/1996EP0717141A2 Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth and heavy metal ions in dye baths or postdye baths, in the textile industry
06/19/1996CN1124720A Non-toxic quick-acting scale remover
06/18/1996US5527547 Biocidal methods and compositions for recirculating water system
06/18/1996US5527468 Nonionic polymers for the treatment of boiler water
06/18/1996US5527395 Method of cleaning and maintaining potable water distribution pipe systems with a heated cleaning solution
06/12/1996EP0715635A1 Water-soluble copolymerizates containing carboxyl groups, methods of producing said copolymerizates, and use thereof as scale inhibitors
06/11/1996US5525257 Composition for water treatment containing polyaspartic acidora derivative thereof and a polcarboxylic acid and methods of using the composition
06/11/1996US5525252 Foaming, odorless mixture of hydrochloric, phosphoric and dodecylbenzenesulfonic acids
06/11/1996US5525224 Apparatus for improving city water
06/08/1996CA2161919A1 Use of ethylenically unsaturated compound/polyalkylene oxide copolymers for scale and corrosion inhibition
06/05/1996EP0714859A2 Methods for controlling scale formation in aqueous systems
06/05/1996EP0666835A4 Copolymers of polyamino acids as scale inhibition agents.
06/04/1996US5523023 Water treatment/cleaning composition comprising polyaspartic acid or derivatives thereof and phosphonic acid
06/04/1996US5522992 Solution treatment device
05/1996
05/29/1996EP0530358B1 Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor
05/29/1996CN1123252A Method of inhibiting sulfate scale in aqueous systems using poly(amino acids)
05/22/1996EP0712810A2 Prevention of scale formation in aqueous systems
05/22/1996CN1122780A Poly-carboxylic salt water treatment agent, prepn. method and usage thereof
05/22/1996CA2162450A1 Method for prevention of scale formation in aqueous systems
05/21/1996US5518630 Water systems
05/21/1996US5518629 Methods for controlling scale formation in acqueous systems
05/17/1996WO1996014092A1 Synergistic biocidal combinations
05/17/1996CA2204279A1 Synergistic biocidal combinations
05/15/1996EP0711733A1 Polyether polyamino methylene phosphonates for high pH scale control
05/14/1996US5516432 Polymers of unsaturated sulfonic, carboxylic acids as stabilizers
04/1996
04/30/1996US5512186 Method for inhibiting microbial adhesion on surfaces
04/30/1996US5512183 Controlling scale deposition
04/24/1996EP0708057A1 Method of scavenging oxygen from an aqueous medium
04/23/1996US5510038 Adding liquid conditioning agent at high point of seepage pipe
04/21/1996CA2158602A1 Method of scavenging oxygen from an aqueous medium
04/18/1996WO1996011169A1 Composition and method for inhibiting chloride-induced corrosion of and limescale formation on ferrous metals and alloys
04/17/1996CN2224842Y Circular sealed treating tank for purifying water in mine-well
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