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| Number | Title | Issue Date |
| 8057738 | Cooling water scale inhibition method Methods for inhibiting corrosion in aqueous evaporative systems where soluble silica (SiO2) is maintained at residuals between 10 Mg/L and saturation, but more preferably maintained at greater than 300 mg/L as SiO2, to provide corrosion inhibit... | 11/15/2011 |
| 7955553 | Cooling water corrosion inhibition method A method of providing corrosion inhibition to copper, nickel, aluminum, zinc, tin, lead, beryllium, carbon steel, various alloys of such metals, and galvanized coatings in evaporative cooling water applications approaching zero liquid discharge that are specifically... | 06/07/2011 |
| 7708939 | Cooling water corrosion inhibition method A method of providing corrosion inhibition to copper, nickel, aluminum, zinc, tin, lead, beryllium, carbon steel, various alloys of such metals, and galvanized coatings in evaporative cooling water applications approaching zero liquid discharge that are specifically... | 05/04/2010 |
| 7468158 | Corrosion inhibitor for protecting metallic materials in strongly alkaline medium Corrosion inhibitor and method of protecting metallic materials in strongly alkaline medium by means of a corrosion inhibitor, characterized in that it contains an amine containing at least one CH group bound to the nitrogen. ... | 12/23/2008 |
| 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 |
| 7300542 | Method for inhibiting calcium salt scale Compositions and method of improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the black liquor composition recovered f... | 11/27/2007 |
| 7208117 | Automated process for inhibiting corrosion in an inactive boiler containing an aqueous system This invention relates to an automated process to inhibit corrosion of the metal surface of an inactive boiler containing water. ... | 04/24/2007 |
| 7205265 | Cleaning compositions and methods of use thereof A remover composition and method for removing resists from substrates containing nucleophilic amine and at least one solvent is described. Optionally, a chelating agent can also be included in the remover composition. The remover composition is especially suitable f... | 04/17/2007 |
| 7195782 | Concentrated aqueous bromine solutions and their preparation Described is a process of producing a concentrated liquid biocide formulation. Mixed together are (a) bromine chloride or bromine and (b) an aqueous solution of alkali metal salt of sulfamic acid having a pH of at least about 7, in amounts such that (i) the active b... | 03/27/2007 |
| 7172677 | Method for inhibiting calcium salt scale Compositions and method for improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the aqueous digester composition in a c... | 02/06/2007 |
| 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 |
| 7127959 | Process for assessing inhibition of petroleum corrosion The present invention is an apparatus for simulating corrosion activity in liquid and vapor/condensate corrosion environments. The apparatus includes a container, including a lower region containing the liquid and an upper region, including a condenser, a heater for... | 10/31/2006 |
| 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 |
| 7097739 | Method for the production of improved pulp Compositions and method for improving properties of pulp produced or reducing the digester cycle time in alkaline chemical pulping processes in which an effective amount of at least one selected phosphonate or carboxylate compound or mixtures thereof is admixed with... | 08/29/2006 |
| 7087251 | Control of biofilm A method of eradicating or at least substantially reducing biofilm on a surface in contact with water, or which comes in contact with water, which method comprises introducing into such water a concentrated aqueous biocidal composition formed from bromine chloride a... | 08/08/2006 |
| 7001873 | Decontamination of surfaces contaminated with prion-infected material with oxidizing agent-based formulations A surface which carries a material which is infected with prions is cleaned with an alkaline cleaning solution to remove as much proteinaceous material as possible from the surface. The cleaning agent is an alkaline cleaning agent which attacks prions remaining on t... | 02/21/2006 |
| 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 |
| 6995484 | Coating compositions for electronic components and other metal surfaces, and methods for making and using the compositions A method is disclosed for providing inorganic and/or organic coating compositions onto rotor cores to eliminate soldering during aluminum injection. These coatings can also be applied upon electric motor rotors and/or stators laminates as well as other electronic co... | 02/07/2006 |
| 6919364 | Microbiological control in animal processing Fecal bacterial contamination in an animal is reduced by providing it with drinking water containing a microbiocidally-effective amount of halogen-based microbiocide resulting from mixing with water (A) a product formed in water from (i) bromine, chlorine, or bromin... | 07/19/2005 |
| 6908636 | Microbiological control in poultry processing In the processing of poultry, equipment, instruments, apparatus and/or water used in such processing, and/or carcasses and/or parts of poultry resulting from the processing of poultry, are disinfected with aqueous solutions of certain halogen-based microbiocides, es... | 06/21/2005 |
| 6881244 | Method and device for preventing deposits in steam systems The present invention relates to a method for preventing the deposition of contaminants in steam systems. In a method of this type, deposits are prevented in a simple and economic manner by metering an additive into the steam, which additive adheres to the steam-sid... | 04/19/2005 |
| 6695897 | Corrosion resistant system for performance drilling fluids utilizing formate brine A corrosion inhibited formulation for drilling compositions consisting essentially of an environmentally friendly corrosion inhibitor blended with an alkali metal formate. The corrosion inhibitor is prepared pursuant to a process including the steps of: ... | 02/24/2004 |
| 6645400 | Corrosion control utilizing a hydrogen peroxide donor The present invention describes an innovative means of inhibiting corrosion of metals which experience active-passive transition in contact with an electrolyte. This invention incorporates hydrogen peroxide and/or peroxycarboxylic acids or their constitue... | 11/11/2003 |
| 6632294 | Corrosion protection of steel in ammonia/water heat pumps Corrosion of steel surfaces in a heat pump is inhibited by adding a rare earth metal salt to the heat pump's ammonia/water working fluid. In preferred embodiments, the rare earth metal salt includes cerium, and the steel surfaces are cerated to enhance th... | 10/14/2003 |
| 6613249 | Corrosion inhibiting composition This invention relates to a corrosion inhibiting composition for use in commercial, institutional, and industrial water systems. The compositions comprise a mixture of (1) a fatty acid ester, and (2) a polyalkylene glycol, preferably polyethylene glycol. ... | 09/02/2003 |
| 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 |
| 6548016 | Oil soluble hydrogen permeation inhibitor The present invention provides a composition and method for inhibiting hydrogen permeation in metal refinery equipment comprising incorporating into a product stream handled by said equipment a polyamine amide of 3-hydrocarbyl thiopropionic acid in an amo... | 04/15/2003 |
| 6464901 | Halogen resistant copper corrosion inhibitors Non-halogen substituted, nitrogen containing, aromatic compounds are disclosed which are effective copper corrosion inhibitors in aqueous systems being treated with a halogen biocide. The materials of the present invention exhibit copper corrosion inhibit... | 10/15/2002 |
| 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 |
| 6261346 | Method for protecting metal surfaces against corrosion in liquid or gaseous media A process useful for protecting metal surfaces against corrosion in is presented involving: (a) forming a corrosion inhibitor having a compound corresponding to formula (I): ##STR1## where R1, R2 and R3 independently of on... | 07/17/2001 |
| 6203718 | Aqueous ammonia corrosion inhibitor A corrosion-inhibited working fluid for an aqueous ammonia absorption cycle apparatus is charged with an alkali metal base in the concentration range of 0.0003 to 0.0063 moles per liter of water. A process for controlling corrosion and hydrogen generation... | 03/20/2001 |
| 6187227 | Thiacrown ether compound corrosion inhibitors for alkanolamine units The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by adding to the alkanolamine solution a corrosion inhibiting amount of a thiacrown ether compound. The compounds are monomeric or polymeric and h... | 02/13/2001 |
| 6143243 | Method of inhibiting cavitation-erosion corrosion of aluminum surfaces using carboxylic acid based compositions comprising polymerizable-acid graft polymers This invention relates to a method of inhibiting the cavitation-erosion corrosion of aluminum surfaces. The method comprises the step of contacting the aluminum surface with a formulation comprising a corrosion inhibitor composition comprising one or more... | 11/07/2000 |
| 6106770 | Method for preventing obstruction in aluminum brass pipes in a water flow path A method for preventing obstruction in aluminum brass pipes in a water flow path, including the steps of continuously supplying iron ions or an iron ion supply compound to water in the water flow path in such a manner that a concentration of iron ions in ... | 08/22/2000 |
| 6103144 | Halogen resistant copper corrosion inhibitors Non-halogen substituted, nitrogen containing, aromatic compounds are disclosed which are effective copper corrosion inhibitors in aqueous systems being treated with a halogen biocide. The materials of the present invention exhibit copper corrosion inhibit... | 08/15/2000 |
| 6059996 | Low-viscosity coolant brines having improved corrosion protection The invention relates to low-viscosity, aqueous coolant brines based on inhibited alkali metal acetates and/or formates having improved corrosion protection, wherein the coolant brines contain 0.2 to 5% by weight of alkali metal sulfites or pyrosulfites, ... | 05/09/2000 |
| 6045719 | Use of quaternized imidazoles as corrosion inhibitors for non-ferrous metals, and coolant compositions and antifreeze concentrates comprising them Quaternized imidazoles I ##STR1## in which R1 and R3 independently of one another are saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nona... | 04/04/2000 |
| 6042750 | Composition for inhibiting corrosion in ferrous metal A composition for inhibiting corrosion of metal is described, wherein the composition comprises at least one tetraalkylammonium halide, at least one alkyldiamine, at least one polyethylene aliphatic hydrocarbon amine, at least one polyethylene fatty acid ... | 03/28/2000 |
