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| Number | Title | Issue Date |
| 7361632 | Water soluble glass as corrosion protector in dishwashing machines A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO. ... | 04/22/2008 |
| 7157008 | Apparatus and process for water conditioning A conditioning process and equipment are provided for removing hardness from water circulated in a system, such as an evaporative cooling system. A sidestream from such system is routed to a reaction chamber and back to the system. A conditioner is added to the side... | 01/02/2007 |
| 7135118 | Method for treatment against corrosion and depositions in domestic supply water stallations The invention concerns a method for preventive treatment of corrosion, oxidation and/or depositions in domestic supply water distribution circuits, comprising steps which consist in: a diagnosis including an analysis of the state of corrosion, oxidation, depositions... | 11/14/2006 |
| 6811747 | Corrosion inhibitor The present invention relates to water treatment chemical formulations, and more particularly to chemical formulations used to treat water containing halogens as a sanitizing agent. The water treatment chemical formulations contain cyanuric acid and an alkali metal ... | 11/02/2004 |
| 6620340 | Method for providing a corrosion inhibiting solution The invention is directed to a method for providing a corrosion inhibiting aqueous solution which includes zinc orthophosphate where the zinc orthophosphate is solubilized. The invention is directed to a method of making a substantially contaminant-free, ... | 09/16/2003 |
| 6551553 | Disinfection method A process is provided for disinfecting articles at temperatures below 5° C. with an aqueous alcoholic salt solution. The process provides a fast reduction of microorganisms at low temperatures with a wide degree of efficacy.... | 04/22/2003 |
| 6416712 | Corrosion inhibition method suitable for use in potable water Effective corrosion inhibitors having minimal organic content, particularly suitable for use in municipal drinking water systems, are described. The corrosion inhibiting additive is a stannous salt of a non-carbon acid.... | 07/09/2002 |
| 6399021 | Method of treating concrete structures A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products, and novel combinations thereof with metals, for preventing or... | 06/04/2002 |
| 6395225 | Sulphydryl acid and imidazoline salts as inhibitors of carbon corrosion of iron and ferrous metals The invention concerns inhibitor compositions based on fatty sulphydryl acid and poly(ethyleneamino)imidazoline salts for considerably reducing the corrosive effect of carbon brine on iron and ferrous metals. These compositions are as efficient when the c... | 05/28/2002 |
| 6391384 | Method for providing a corrosion inhibiting solution The invention is directed to a method for providing a corrosion inhibiting aqueous solution which includes zinc orthophosphate where the zinc orthophosphate is solubilized. The invention is directed to a method of making a substantially contaminant-free, ... | 05/21/2002 |
| 6365101 | Methods of preventing scaling involving inorganic compositions, and compositions therefor Method for inhibiting scale deposits in an aqueous system. The method may include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-sca... | 04/02/2002 |
| 6355214 | Methods of preventing scaling involving inorganic compositions, and inorganic compositions therefor Method for inhibiting scale deposits in an aqueous system. The method may include adding anti-scalant to the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 500 ppm, wherein the anti-scalant comprises at least one o... | 03/12/2002 |
| 6333005 | Methods of preventing scaling involving inorganic compositions in combination with copolymers of maleic anhydride and isobutylene, and compositions therefor Method for inhibiting scale deposits in an aqueous system. The method includes at least one of adding and forming anti-scalant in the aqueous system, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbona... | 12/25/2001 |
| 6200529 | Corrosion inhibition method suitable for use in potable water Effective corrosion inhibitors having minimal organic content, particularly suitable for use in municipal drinking water systems, are described. The preferred corrosion inhibiting additive is an aqueous solution of a stannous halide, preferably stannous c... | 03/13/2001 |
| 6080334 | Corrosion resistant buffer system for metal products A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products, and novel combinations thereof with metals, for preventing or... | 06/27/2000 |
| 6071435 | Composition and process for treating a zinciferous surface To inhibit the blackening of zinciferous metal-plated steel sheet while also generating a good corrosion resistance, fingerprint resistance, and chromium fixation ratio for the steel sheet, it is coated with an aqueous liquid composition that has a pH not... | 06/06/2000 |
| 5985152 | Method of preventing corrosion in a water system Ca ion is removed by a cation exchange resin and silica and corrosive ions are removed by an anion exchange resin. Even after the anion exchange resin reaches the silica break through point or after the cation exchange resin reaches the Ca ion break throu... | 11/16/1999 |
| 5976414 | Non-Phosphorus corrosion inhibitor program for air washer system The prevention of corrosion on the surfaces of airwasher systems and particularly systems containing low levels of hardness is controlled utilizing a corrosion inhibiting amount of a composition including an alkali metal silicate, a hydroxycarboxylic acid... | 11/02/1999 |
| 5858798 | Method and apparatus for detecting amines and ammonia by fluorescence Primary amines, ammonia, or mixtures thereof can be detected using a reagent comprising from about 650 ppm to about 25 percent by weight of phthalic dicarboxyaldehyde; from about 74 to about 99.88 percent by weight of an alkali metal borate; and, from abo... | 01/12/1999 |
| 5820763 | Method for inhibiting corrosion in water systems The water of a water system is treated to inhibit corrosion of metal components by passage through an anion exchanger preloaded with corrosion-inhibiting anions. A low molecular weight polymer is added. A chlorine containing slime controlling agent is add... | 10/13/1998 |
| 5792360 | Water treatment system comprising water-soluble glass A water treatment system for submersion in a body of water to be treated comprises a water-soluble glass treatment agent and a water-insoluble retaining means for the water-soluble glass treatment agent. The retaining means is adapted, in use, to retain w... | 08/11/1998 |
| 5753181 | Method for enhancement of polyguanide based sanitizing system The invention discloses a composition and method for the enhancement of polyguanide based water sanitizing systems and for conversion of such systems to alternative water sanitizing systems if desired. The method includes the addition of an enhancing or c... | 05/19/1998 |
| 5720902 | Methods and compositions for inhibiting low carbon steel corrosion Disclosed are methods and compositions for inhibiting the corrosion of low carbon steel in contact with aqueous systems. The composition comprises a silicon compound containing a hydrolyzable group, a complex fluoro acid, and a cross-linking agent.... | 02/24/1998 |
| 5589106 | Carbon steel corrosion inhibitors The prevention of corrosion on the surfaces of metallic pipes, heat exchangers, and the like which are in contact with industrial cooling waters, and particularly industrial cooling waters containing low levels of hardness is controlled utilizing a corros... | 12/31/1996 |
| 5578246 | Corrosion inhibiting compositions for aqueous systems This invention relates to a metal corrosion inhibiting composition comprising in admixture: (a) an anodic silicate salt; (b) a silicate salt stabilizer; (c) a cathodic corrosion inhibitor; and water. Preferably, the corrosion inhibiting composition also c... | 11/26/1996 |
| 5527506 | Method for enhancement of polyguanide based sanitizing system The invention discloses a composition and method for the enhancement of polyguanide based water sanitizing systems and for conversion of such systems to alternative water sanitizing systems if desired. The method includes the addition of an enhancing or c... | 06/18/1996 |
| 5512212 | Corrosion inhibitor composition and method of use A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxy... | 04/30/1996 |
| 5435969 | Monitoring water treatment agent in-system concentration and regulating dosage A concentration-fluctuation responsive regulation of water treatment agent feed is achieved by adding an incipient to a sample whereby a concentration indicator is formed. Such a concentration indicator comprises a combination of the incipient reagent and... | 07/25/1995 |
| 5424007 | 1-methyl-3,5,7-triaza-1-azoniatricyclodecane compounds, a method for preparing these compounds, their use in the control of microorganisms in aqueous systems, and their use in the inhibition of corrosion Compounds of the formula ##STR1## wherein X is an anion selected from the group consisting of phosphate, borate and molybdate groups, and a method for making these compounds. The compounds are useful in the control of microorganisms in aqueous system... | 06/13/1995 |
| 5415805 | Corrosion inhibitor composition and method of use A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxy... | 05/16/1995 |
| 5397534 | Method for controlling crevice chemistry on the secondary side of a pressurized water reactor steam generator A method for detecting pH imbalances and/or achieving pH balance in crevices of a pressurized water reactor steam generator. The method comprises obtaining hideout return concentrations of sodium, chloride, calcium and sulfate ions, and silica from the wa... | 03/14/1995 |
| 5395600 | Corrugated thin metal monolith converter A multicellular monolith converter body having a plurality of corrugated thin metal sheets or strips in alternating relation with a thin wire mesh or frame, and which monolith has a cell density up to 100 cells per square inch. These monoliths are useful ... | 03/07/1995 |
| 5380466 | Reaction product of nitrogen bases and phosphate esters as corrosion inhibitors A method for inhibiting corrosion of metal surfaces in an aqueous medium, comprising incorporating into the medium a corrosion inhibitor in an amount sufficient to inhibit corrosion, the corrosion inhibitor comprising a water-soluble agent selected from t... | 01/10/1995 |
| 5378401 | Preparation of zinc polyphosphate in high PH solution An improved method is disclosed for preparing zinc polyphosphate in a stable, concentrated solution, for water treatment purposes having a pH above 7.0 and in a preferred range of pH between 8.0 and 10.0. Without any acid solubilization required, an appro... | 01/03/1995 |
| 5376331 | Method and composition for inhibiting general and pitting corrosion in cooling tower water A method of inhibiting the pitting corrosion rate of carbon steel in a cooling tower system comprising adding to a cooling tower water an effective amount of a corrosion inhibiting composition containing from about 1 to about 10 ppm of a water soluble mol... | 12/27/1994 |
| 5372748 | Agent inhibiting the corrosive characteristics of nitrogenous fertilizing solutions, process using the said agent and nitrogenous fertilizing solutions containing the said agent Process for inhibiting the corrosive characteristics of a nitrogenous fertilizing solution comprising incorporating in said nitrogenous fertilizing solution at the moment of its constitution, about 50 to about 150 ppm of at least one of the linear esters ... | 12/13/1994 |
| 5356548 | 1-methyl-3,5,7-triaza-1-azoniatricyclodecane compounds, a method for preparing these compounds, their use in the control of microorganisms in aqueous systems, and their use in the inhibition of corrosion Compounds of the formula ##STR1## wherein X is an anion selected from the group consisting of phosphate, borate and molybdate groups, and a method for making these compounds. The compounds are useful in the control of microorganisms in aqueous system... | 10/18/1994 |
| 5320779 | Use of molybdate as corrosion inhibitor in a zinc/phosphonate cooling water treatment A corrosion inhibitor treatment composition for cooling water systems is disclosed in which no chromate is used and no free orthophosphate is present comprising a combination of a localized corrosion inhibitor in the form of a salt of molybdenum, vanadium... | 06/14/1994 |
| 5266228 | Corrosion-inhibiting automotive coolant solutions containing effective amounts of sodium silicate having a low ratio of silica to sodium oxide Non-corrosive anti-freeze solutions for automotive cooling systems include an anti-corrosive effective amount of a sodium silicate corrosion inhibitor. The sodium silicate has an unusually low ratio of silica to sodium oxide of greater than 1.0 to about 2... | 11/30/1993 |
| 5262078 | Corrosion-inhibiting automotive coolant solutions containing effective amounts of sodium silicates and sodium nitrate, and methods of inhibiting corrosion of automotive cooling systems using such coolant solutions Non-corrosive anti-freeze solutions for automotive cooling systems include an anti-corrosive effective amount of a sodium silicate corrosion inhibitor, and sodium nitrate. The sodium silicate has an unusually low ratio of silica to sodium oxide of greater... | 11/16/1993 |
