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| Number | Title | Issue Date |
| 7632458 | Corrosion inhibitor treatment for closed loop systems The present invention provides an effective method of inhibiting corrosion on metallic surfaces in contact with a fluid contained in a closed loop industrial fluid system, which comprises adding to such fluid an effective corrosion controlling amount of a combinatio... | 12/15/2009 |
| 7407623 | Steam condensate corrosion inhibitor compositions and methods Lecithin and 2-bromo-2-nitropropane-1,3 diol (BNPD) are used to inhibit corrosion in boiler steam condensate systems. Aqueous steam condensate corrosion inhibiting compositions of these components are also disclosed. BNPD is also used as a preservative in lecithin c... | 08/05/2008 |
| 7404902 | Method for treating water A composition for treating water contained in enclosures, such as swimming pools, spas, whirlpool tubs and cooling towers, which includes at least one boron compound, cyanuric acid, at least one mineral remover and at least one clarifier is provided. A composition a... | 07/29/2008 |
| 7252769 | Use of cerium salts to inhibit manganese deposition in water systems Methods to control manganese deposition in an aqueous system, which include introducing a cerium-containing composition, and optionally another deposit control agent, to the aqueous system, are described. Also described, are cerium-containing compositions that promo... | 08/07/2007 |
| 7204937 | Metal oxides dispersant composition This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant compositio... | 04/17/2007 |
| 7179384 | Control of cooling water system using rate of consumption of fluorescent polymer A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water treatment product including at least one fluorescent polymer and a fluoresce... | 02/20/2007 |
| 7179403 | Anti-corrosion solutions for air dehumidification systems Anti-corrosion solutions useful for air dehumidification processes are disclosed. Phosphonate corrosion inhibiting agents or mixtures thereof can be added to halide solutions of alkali metals, alkaline earth metals, or mixtures thereof, to minimize corrosion of the ... | 02/20/2007 |
| 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 |
| 7141174 | Modified amine for boiler water treatment The present invention provides a method of treating boiler and condensate water by the addition of an effective amount of a hydroxyamine-acid ester treatment reagent or an all-in-one treatment composition comprising a hydroxyamine-acid ester. Modification of a hydro... | 11/28/2006 |
| 7122148 | Cooling water scale and corrosion inhibition A methods of the present invention for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica residuals (SiO2) are maintained in excess of 200 mg/L, and source water silica deposition is inhibited with silica accumulations... | 10/17/2006 |
| 7081438 | Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces Fluids useful in oil well drilling operations are described. The fluids comprise standard viscosifying and fluid loss control additives along with phosphonates or phosphate esters of organic ligands. The addition of the phosphonates or phosphate esters at effective ... | 07/25/2006 |
| 7047985 | Removal of blockages from pipework using carbamate and nitric acid treatment steps The invention provides a method for the removal of contaminating materials from pipework, the contaminating materials comprising deposits on the pipework which cause a reduction in the effective internal diameter of the pipes and thereby effect a reduction in the ra... | 05/23/2006 |
| 7008561 | Ether carboxylic acids based on alkoxylated mercaptobenzothiazoles and use of the same as corrosion inhibitors The present invention relates to compounds of formula (1) and the salts thereof which correspond to formula (2). In the formulae, A is C2- to C4-alkylene, x is a number from 1 to 100, y is a number... | 03/07/2006 |
| 6998092 | Cooling water scale and corrosion inhibition A methods for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica (SiO2) can be maintained at residuals below 200 mg/L, but more preferably maintained at greater than 200 mg/L as SiO2, without silica scale an... | 02/14/2006 |
| 6998049 | Method for preventing the formation of biological films The invention relates to a method for improving the performance of filtration devices by adding P- and/or N-containing compounds to the medium to be filtered. ... | 02/14/2006 |
| 6953534 | Engine antifreeze composition In general this invention relates to an antifreeze composition that can be used in the cooling systems of internal combustion engines, for example, in heavy-duty diesel engines, light duty trucks and cars. The antifreeze composition can be added to water or other su... | 10/11/2005 |
| 6949193 | Cooling water scale and corrosion inhibition A methods for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica (SiO2) can be maintained at residuals below 200 mg/L, but more preferably maintained at greater than 200 mg/L as SiO2, without silica scale an... | 09/27/2005 |
| 6935192 | Microfluidic bulk flow determinations based on converting heat tracer measurements The fluid flow rate within a microfluidic passageway of a microfabricated device is determined by measuring the time-of-flight of a heat pulse coupled into the fluid. Since the propagation velocity of the heat trace is generally slower than the mean flow rate of the... | 08/30/2005 |
| 6929749 | Cooling water scale and corrosion inhibition A methods of the present invention for inhibiting silica scale formation and corrosion in aqueous systems where soluble silica residuals (SiO2) are maintained in excess of 200 mg/L, and source water silica deposition is inhibited with silica accumulations... | 08/16/2005 |
| 6926836 | Treatment of iron sulphide deposits Treating a water system containing or in contact with a metal sulphide scale to inhibit, prevent, reduce, dissolve or disperse iron sulphide deposits. A solution of tris(hydroxyorgano)phosphines (THP) and tetrakis(hydroxyorgano)phosphonium salts (THP+ sal... | 08/09/2005 |
| 6846419 | Phosphonamide and phosphonamide blend compositions and method to treat water The invention is a water treatment composition comprising at least one phosphonamide and blends thereof and a method to treat water. As phosphonamides are generally odorless, and typically solids, phosphonamide and phosphonamide blend compositions are generally odor... | 01/25/2005 |
| 6846452 | Scale inhibitor for an aqueous system This invention relates to a composition and a method for inhibiting the formation of scale, particularly complex scale, in an aqueous system where more than one type of scale is present. The scale typically present in the aqueous system includes silica, silicates, a... | 01/25/2005 |
| 6840989 | Corrosion inhibitor for bathing water containing sodium chloride and magnesium sulfate The present invention relates to a corrosion inhibitor for bathing waters which contain chlorides and sulfates, in particular sodium chloride and magnesium sulfate, that reduces the corrosion effect of such bathing water on metallic materials, in particular steels (... | 01/11/2005 |
| 6814930 | Galvanized metal corrosion inhibitor A white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more organophosphorus compounds and one or more tannin compounds. ... | 11/09/2004 |
| 6808680 | Method of preventing or stopping sulfuric corrosion of metals A method is disclosed for prevention or stoppage of sulfidation or sulfuric corrosion of metal surfaces in contact with fluids including sulfiding compounds, where the method involves the addition of a compound to the fluid, where the additive has a higher affinity ... | 10/26/2004 |
| 6645428 | Fluorescent monomers and tagged treatment polymers containing same for use in industrial water systems Fluorescent monomers are described and claimed which are synthesized by reacting a substituted or non-substituted naphthalic anhydride with an amine and with a moiety containing a polymerizable group. Such monomers are useful for the preparation of tagged... | 11/11/2003 |
| 6572789 | Corrosion inhibitors for aqueous systems A method of inhibiting corrosion in aqueous systems comprising adding to the system a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts and a method of preparing a composition comprising mono, bis and oligomeric phosphinosucci... | 06/03/2003 |
| 6533958 | System for controlling microbial fouling A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source. The method is... | 03/18/2003 |
| 6468470 | Galvanized metal corrosion inhibitor A white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more organophosphorus compounds, one or more tannin compounds, and one or more... | 10/22/2002 |
| 6464900 | Scale corrosion inhibiting composition This invention relates to corrosion inhibiting compositions for aqueous systems comprising (a) polyaspartic acid or salts therefore, and (b) a water soluble phosphonated oligomer. The compositions are effective corrosion inhibitors, but are also advantage... | 10/15/2002 |
| 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 |
| 6403028 | All-organic corrosion inhibitor composition and uses thereof This invention relates to an all-organic corrosion inhibiting composition comprising (a) 6,6,6-(1,3,5-triazine-2,4,6-triyltriimino) tris hexanoic acid; and (b) a water-soluble phosphonated oligomer salt. The invention also relates to a process for inhibit... | 06/11/2002 |
| 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 |
| 6383414 | Use of corrosion inhibiting compounds to inhibit corrosion of metal plugs in chemical-mechanical polishing A process of inhibiting a corrosion of metal plugs formed in integrated circuits is described. The corrosion inhibiting process includes providing a partially fabricated integrated circuit surface including the metal plugs on a polishing pad to carry out ... | 05/07/2002 |
| 6379612 | Scale inhibitors The present invention provides compositions of oil-soluble inhibitors suitable for use in inhibiting oil field scale formation. The compositions comprise an acid form of a known scale inhibitor and a tertiary alkyl primary amine. These compositions posses... | 04/30/2002 |
| 6337047 | Process for dispersing iron oxide in steam generating boilers This invention relates to a process for dispersing corrosion products, specifically iron oxide, in steam generating boilers. Improved dispersion is achieved by adding a dispersant to a feedpoint of the steam generating boiler where the composition compris... | 01/08/2002 |
| 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 |
| 6183649 | Method for treating water circulating systems Water-circulating systems are treated with an aqueous, alkaline composition comprising I) an organo-phosphorus chelating agent, II) an acrylate homopolymer, III) a salt of an acrylic copolymer, a portion of the repeating units of which contain sulfonate groups... | 02/06/2001 |
| 6180056 | Method and compositions for minimizing biological and colloidal fouling A composition for minimizing biological and/or colloidal fouling is described, which includes an anionic antiscalant and a cationically charged biocide. Further, a method of controlling fouling is described and achieved by introducing a formulation of the... | 01/30/2001 |
| 6177047 | Water-treatment composition and method of use The invention herein relates to water-treatment technology, namely compositions comprising a phosphonic acid, a zinc salt and a metal salt. A preferred metal salt is aluminum tri-chloride whereas amino tris methylene phosphonic acid is a preferred phospho... | 01/23/2001 |
