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| Number | Title | Issue Date |
| 7670442 | Iron phosphating process that reduces laser scale resulting in improved paint adhesion A process for iron phosphating ferrous metal substrates having undesirable ferrous oxides thereon, such as that formed by laser cutting, that eliminates at least the pickling step in the phosphating process and provides good paint adhesion, and compositions of matte... | 03/02/2010 |
| 7510613 | Composition and process for treating metals Metal surfaces are treated with acidic aqueous compositions to form conversion coatings. The acidic aqueous compositions contain fluorometallate anions, divalent and/or trivalent cations of certain elements such as zinc, phosphorus-containing inorganic oxyanions, ph... | 03/31/2009 |
| 7344607 | Non-chromate conversion coating treatment for metals Chromate-free treatments and compositions, for applying a conversion or passivation coating to zinc coated metal surfaces. The compositions comprise a polyamidoamine/epihalohydrin polymer or cationic polyamine/epihalohydrin polymer component, fluoacid, H3... | 03/18/2008 |
| 7332021 | Coating composition A coating composition comprising an aqueous mixture containing acid-stable particles and one or more fluoroacids. The amount of the acid-stable particles in the coating composition is from 0.005% to 8% by weight on a dry weight basis. The acid-stable particles can b... | 02/19/2008 |
| 7294210 | Use of substituted hydroxylamines in metal phosphating processes Alkyl-substituted hydroxylamines are useful as aids in the phosphating of metal substrates. In particular, the rate of phosphating and the rate at which manganese compounds are dissolved into aqueous phosphoric acid solutions may be accelerated by alkyl-substituted ... | 11/13/2007 |
| 7250193 | Pretreatment method for coating It is an object of the present invention to provide a pretreatment method for coating, which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. A pretreatment method for coat... | 07/31/2007 |
| 7229565 | Chemically assisted surface finishing process A method of surface refinement for refining a first roughness of a surface of a component to a second roughness. The method includes wetting the first roughness surface with an aqueous mixture that includes solid media. The aqueous mixture chemically alters the surf... | 06/12/2007 |
| 7229506 | Process for pickling martensitic or ferritic stainless steel A process for pickling martensitic or ferritic stainless steel, preferably in the form of wires, tubes or rods, wherein the stainless steel is placed in contact with a pickling solution which has a temperature in the range 15 to 29° C. and contains 50 to 120 g/l of... | 06/12/2007 |
| 7208053 | Method for applying a phosphate covering and use of metal parts thus phospated Metallic surfaces are coated with an aqueous, acidic phosphate solution containing 10 to 60 g/l zinc, 0.5 to 40 g/l manganese, 50 to 300 g/l phosphate ions calculated as P2O5, and optionally other components. ... | 04/24/2007 |
| 7175882 | Process for coating metal surfaces A protective coating is formed on a metallic surface by contacting the surface with an aqueous solution of fluorometallate followed by an aqueous solution containing vanadate ions. The process does not require the use of any organic substances, but provides a corros... | 02/13/2007 |
| 7153348 | Hexavalent chromium-free surface-treating agent for Sn or Al-based coated steel sheet, and surface treated steel sheet A hexavalent chromium-free surface treating agent for Sn- or Al-based coated steel sheet, comprising a trivalent chromium compound (A), a water-dispersible silica (B), a lubricity imparting component (C) made of one or more waxes of polyolefin wax, fluorine-containi... | 12/26/2006 |
| 7144599 | Hybrid metal oxide/organometallic conversion coating for ferrous metals The ferrous metal chemical conversion coating is comprised of mixed oxides and organometallic compounds of aluminum and iron. A ferrous metal substrate is immersed for a period of time in a bath composition, at a temperature, at a pH, and at a concentration for each... | 12/05/2006 |
| 7105472 | Coating solution for metals and metal alloys The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy. ... | 09/12/2006 |
| 7063735 | Coating composition A coating composition comprising an aqueous mixture containing inorganic particles, a catechol compound, and one or more fluoroacids. The preferred fluoroacids are selected from fluorotitanic acid, fluorozirconic acid, fluorosilicic acid, fluoroboric acid, fluorosta... | 06/20/2006 |
| 7056445 | Method of removing paint applied to magnesium-alloy material A method is provided for removing a paint layer formed on a Mg-alloy material. The method includes a physical removing step and a chemical removing step. At the physical removing step, the paint layer is partially removed by using a cutter or by wet blasting. Then, ... | 06/06/2006 |
| 7041629 | Stripper for special steel The inventive aqueous pickling agent on the basis of sulfuric acid or phosphoric acid and hydrogen fluoride for stainless steels, which pickling agent is free of wetting and emulsifying agents, contains (each as 100 wt-% substance) | 05/09/2006 |
| 7037385 | Aqueous metal treatment composition An aqueous metal surface treatment composition comprising the following ingredients: (A) an aqueous dispersion of a phenolic resin that includes a reaction product of (i) a phenolic resin precursor; | 05/02/2006 |
| 6929705 | Antimicrobial coated metal sheet The present invention relates to metallic sheets having an improved antimicrobial property and also related to a method of manufacturing such sheets. More particularly, it relates to the continuous coating on metallic sheets with a resin composition containing antim... | 08/16/2005 |
| 6913840 | Magnesium alloy molded product and method for manufacturing the same There is provided a magnesium alloy molded product being excellent in corrosion resistance. The magnesium alloy molded product being excellent in corrosion resistance and capable of being easily recycled is manufactured by forming an aluminum layer on a surface of a... | 07/05/2005 |
| 6902766 | Two-part aqueous metal protection treatment A two-part metal protection composition includes: an aqueous metal treatment conversion coating component that includes an admixture of an acid and a coating forming component; and an aqueous protective coating component that is applied over metal treated with the a... | 06/07/2005 |
| 6881279 | High performance non-chrome pretreatment for can-end stock aluminum A chemically and thermally stable chromate free aqueous liquid treatment for metals, especially aluminum, that imparts corrosion resistance as good as that from conventional chromate containing treatments, contains water and a fluoroacid selected from the group cons... | 04/19/2005 |
| 6875334 | Method of anodizing of magnesium and magnesium alloys and producing conductive layers on an anodized surface A method, a composition and a method for making the composition for anodizing metal surfaces, especially magnesium surfaces is disclosed. The composition is a basic aqueous solution including hydroxylamine, phosphate anions and nonionic surfactants. A complementary ... | 04/05/2005 |
| 6858097 | Brightening/passivating metal surfaces without hazard from emissions of oxides of nitrogen A chromium- and nitrogen-free brightening and passivating treatment for metal surfaces, particularly iron and steel, comprises: at least one acid; at least one substance containing a peroxy moiety; and at least one organic substance selected from the group consistin... | 02/22/2005 |
| 6818313 | Corrosion-inhibiting coating A corrosion-inhibiting coating, process, and system that provides a tight, adherent zinc- or zinc-alloy coating that is directly deposited onto steel or cast iron surfaces for enhanced corrosion protection. A process for applying the coating is also provided. The pr... | 11/16/2004 |
| 6805756 | Universal aqueous coating compositions for pretreating metal surfaces A universal aqueous composition and a process for using such a composition for pretreating metal substrates is provided. The aqueous composition includes a hydroxy functional cyclic compound, such as a tannin, in an amount of at least about 500 ppm, phosphate ions, ... | 10/19/2004 |
| 6780256 | Method of treating a metal surface with a no rinse zinc phosphate coating An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion of subsequently coated materials such as sealants and paints. The sol... | 08/24/2004 |
| 6758916 | Composition and process for treating metals A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid that preferably has a pH value betwee... | 07/06/2004 |
| 6740173 | Method for protecting metals against corrosion and non-polluting reactive composition therefor The invention concerns a method for protecting metal products against corrosion, characterised in that it consists in applying directly on the metal products, that is without prior treatment, a composition consisting at least of a film-forming binder, at least a cor... | 05/25/2004 |
| 6706123 | Phosphate conversion coating concentrate A liquid iron phosphating concentrate is provided which contains dispersed aromatic carboxylic acid. The aromatic carboxylic acid remains dispersed in the concentrate by incorporation of a thickener in the composition. ... | 03/16/2004 |
| 6673470 | Surface treated tin-plated steel sheet and surface treatment solution A surface treated tin-plated steel sheet which has an alloy layer formed on the surface of a steel sheet, a tin plating layer being formed on said alloy layer with a remaining exposed portion of the alloy layer having an area of 30% or more of that of the... | 01/06/2004 |
| 6638370 | Phosphate conversion coating process and composition By including nitric acid and hydroxylamine in a manganese phosphating composition and controlling the ratio of nitric to phosphoric acids and the ratio of Total Acid to Free Acid within a specified range, satisfactory manganese phosphate conversion coatin... | 10/28/2003 |
| 6635122 | Methods of making and using annealable insulated metal-based powder particles Methods of making and using annealable insulated metal-based powder particles are provided. The insulated metal-based powder particles are formed from metal-based core particles that are coated with an annealable insulating material. The annealable insula... | 10/21/2003 |
| 6589324 | Agent for treating metallic surface, surface-treated metal material and coated metal material A chromium-free agent for treating metallic surface comprising the following (i)-(iv): (i) at least one of (A) a mixture of an aluminum salt and an inorganic oxide particle and (B) an aluminum-containing inorganic oxide particle comprising aluminum, oxyge... | 07/08/2003 |
| 6569264 | Surface-treating agent for magnesium-based part and method of surface treatment The present invention provides a corrosion inhibitor composition for magnesium or magnesium alloys which contains as an effective component, at least one compound selected from among aromatic carboxylic acids and salts thereof as an effective component. F... | 05/27/2003 |
| 6565671 | Surface-treated steel sheet coated with chromate film for fuel tanks and method of fabricating the same The present invention relates to a surface-treated steel sheet coated with a chromate layer having excellent corrosion resistance, fuel resistance and seam weldability, and a chromate solution used for preparing the surface-treated steel sheet. Specifical... | 05/20/2003 |
| 6551417 | Tri-cation zinc phosphate conversion coating and process of making the same Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings formed from these c... | 04/22/2003 |
| 6540845 | Aqueous metal surface treating agent The present invention provides an aqueous agent for treating metal surfaces capable of degreasing and forming a zinc phosphate coat simultaneously. The present metal surface treating agent includes an aqueous solution that includes water and a water-solub... | 04/01/2003 |
| 6514357 | Composition for metal surface treatment and surface treated metallic material A composition for metal surface treatment which comprises an aluminum ion, a magnesium ion, a manganese ion, a water-soluble organic resin, an acid and water; and a surface treated metal material which has been treated with the composition. The resultant ... | 02/04/2003 |
| 6482273 | Preparation of workpieces for cold forming The invention relates to a method for preparing workpieces suitable for phosphatizing for chipless cold forming by acid pickling, rinsing, drying and treatment with acid reaction lubricants containing phosphate ions. According to said method the workpiece... | 11/19/2002 |
| 6478885 | Phosphating processes and products therefrom with improved mechanical formability When a phosphate ester or a dispersed wax is added to a conventional liquid phosphate conversion coating composition, the resulting phosphate coating formed on a metal substrate has a lower coefficient of friction after being oiled than it would have had ... | 11/12/2002 |
