| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 148253000 | Contains phosphorus | 29 |
| 20080223490 | Non-chrome passivation of steel - Chromate free treatments and compositions for applying a conversion or passivation coating to metal surfaces. Preferred compositions comprise a film forming latex polymer, fluoacid, phosphoric acid, and a polyoxyethylene/oxypropylene block copolymer. The requisite metal surfaces are contacted by the compositions and dried. Rinsing is optional. | 09-18-2008 |
| 20090071573 | PHOSPHATING SOLUTION WITH HYDROGEN PEROXIDE AND CHELATING CARBOXYLIC ACIDS - The invention relates to a phosphating solution and a process for the phosphating of metallic surfaces with aqueous, acidic phosphating solutions that comprise zinc and phosphate ions, at least one source of peroxide and one or more aliphatic chelating carboxylic acids containing 2 to 7 carbon atoms; the phosphating solution having a free acid content of one point or less. | 03-19-2009 |
| 20090084471 | METHODS FOR TREATING A FERROUS METAL SUBSTRATE - Disclosed are methods for treating and coating a ferrous metal substrate, such as cold rolled steel, hot rolled steel, and electrogalvanized steel. These methods include contacting the ferrous metal substrate with an aqueous pretreatment composition comprising: (a) a Group IIIB and/or IVB metal compound; (b) phosphate ions; and (c) water. | 04-02-2009 |
| 20100224286 | METHOD FOR COATING ZINC-PLATED STEEL STRIPS WITH AQUEOUS FORMULATIONS OF ACIDIC POLYMERS - Continuous method of passivating galvanized steel strips with acidic aqueous formulations which comprise at least one water-soluble polymer comprising acidic groups. | 09-09-2010 |
| 20110226388 | Chromate-free Conversion Film Solution and the Method of Applying the Solution to Magnesium Alloys - Disclosed herein is a chromate-free conversion film solution and a method of applying the solution to magnesium and magnesium alloys. The solution contains zirconium ions, manganese ions, barium ions and phosphate corrosion inhibitor; and the pH of the said solution is in the range of 1-5; and may further comprise molybdate as accelerant. The method comprises degreasing, acid etching, surface activation, surface adjusting, and film forming steps. The conversion film obtained in accordance with the disclosed method is uniform, smooth, and compact and has high corrosion resistance and good adhesion with paint film. Moreover, the chromate-free conversion film solution is environmentally friendly and possesses fast film growth rates. | 09-22-2011 |
| 20120211124 | GALVANNEALED STEEL SHEET HAVING EXCELLENT FORMABILITY AND EXFOLIATION RESISTANCE AFTER ADHESION AND PRODUCTION METHOD THEREOF - The galvannealed steel sheet includes: a galvannealed layer formed on at least one surface of a steel sheet and contains includes an amount of 0.05 mass % to 0.5 mass % of Al, an amount of 6 mass % of 12 mass % of Fe, and the balance composed of Zn and inevitable impurities; and a mixed layer formed on a surface of the galvannealed layer and includes a composite oxide of Mn, Zn, and P and an aqueous P compound, wherein the composite oxide includes 0.1 mg/m | 08-23-2012 |
| 20120305140 | NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF - A non-oriented electrical steel sheet includes: a base iron ( | 12-06-2012 |
| 20130126050 | INORGANIC PHOSPHATE CORROSION RESISTANT COATINGS - This disclosure relates to method phosphating an iron surface susceptible to corrosion, the method comprising contacting an iron surface with an aqueous mixture of an acidic phosphate component, a basic component, and at least one silicate; and forming a passivation zone chemically bound to the iron surface of one or more iron ions corresponding to the iron surface, the acidic phosphate component, the basic component, and at least one corrosion inhibitor precursor. | 05-23-2013 |
| 20130160898 | CHEMICAL CONVERSION COATED PLATED STEEL SHEET AND METHOD FOR PRODUCING SAME - The present disclosure relates to a chemically treated zinc-based plated steel sheet that is superior in weather resistance, water resistance, blackening resistance and film adhesion. A chemical conversion film having a thickness 0.5-10 μm is formed by coating and drying a chemical treatment solution on a surface of an aluminum-containing zinc-based alloy plated steel sheet. The chemical treatment solution contains a fluororesin containing 0.05-5% by weight of a hydrophilic functional group selected from the group consisting of a carboxyl group and a sulfonic acid group and 7-20% by weight of a fluorine atom, the fluororesin in which a number-average molecular weight is 1,000-2,000,000, and an oxoate, a fluoride, a hydroxide, an organic salt, a carbonate or a peroxygenated salt of a group 4A metal. | 06-27-2013 |
| 20140251503 | High Temperature Conversion Coating on Steel and Iron Substrates - The present invention is directed to compositions and methods for forming conversion coatings on a surface of a substrate by contacting a liquid composition to the surface of the substrate at a high temperature (i.e., 400° F. or above). | 09-11-2014 |
| 20160024660 | METHOD FOR MANUFACTURING GALVANIZED STEEL SHEET (AS AMENDED) - There is provided a method for manufacturing a galvanized steel sheet that has low sliding resistance in press forming and good degreasing property even under severe alkaline degreasing treatment conditions due to low temperature and short process line length. An oxide layer formed on the surface of a galvanized steel sheet is subjected to neutralization treatment using an alkaline aqueous solution containing 0.01 g/L or more of P ions and 0.01 g/L or more of colloid dispersed particles, wherein the alkaline aqueous solution preferably contains at least one phosphorus compound selected from phosphates, pyrophosphates, and triphosphates and at least one type of colloid dispersed particles selected from Ti, silica, Pt, Pd, Zr, Ag, Cu, Au, and Mg. | 01-28-2016 |
| 148254000 | Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, etc.) | 5 |
| 20090159158 | PHOSPHATING SOLUTION AND METHOD FOR CONVERSION TREATING SURFACE OF MAGNESIUM ALLOY WORKPIECE - An exemplary phosphating solution is used for conversion treating a surface of a magnesium alloy workpiece. The phosphating solution includes: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin. A method for conversion treating a surface of a magnesium alloy workpiece is also provided. | 06-25-2009 |
| 20110120595 | METHOD FOR FORMING CONVERSION COATING ON OUTER SURFACE OF MAGNESIUM OR MAGNESIUM ALLOY - Disclosed is a method for forming a conversion coating on the outer surface of magnesium or a magnesium alloy by surface treatment with acidic and alkaline solutions. The method is carried out in an environmentally friendly manner to improve the corrosion resistance of the magnesium or magnesium alloy. The method minimizes the damage to the appearance of the magnesium or magnesium even after surface treatment and maximizes the attractive appearance of the magnesium or magnesium alloy. | 05-26-2011 |
| 20120205011 | Protective Conversion Coating on Mixed-Metal Subtrates and Methods Thereof - Mixed-metal automotive vehicle bodies-in-white comprising ferrous metal surfaces, zinc surfaces, aluminum alloy surfaces, and magnesium alloy surfaces are cleaned and immersed in an aqueous bath comprising an adhesion promoter and an aqueous electrocoat bath (the adhesion promoter may be in the electrocoat bath. The adhesion promoter, which may be a cerium salt, is selected to react with each metal in the body surfaces to form an oxide layer that provides corrosion resistance for the surface and adherence for the deposited polymeric paint coating. The body is cathodic in the electrocoat deposition. | 08-16-2012 |
| 20140251504 | PASSIVATION OF HOLLOW COPPER STRANDS IN A STATOR WATER COOLING SYSTEM - A system for passivating a plurality of hollow copper strands in a stator water cooling system including; a first storage tank containing a cleaning solution, a second storage tank containing rinsing water; a third storage tank containing a passivation solution; a plurality of conduits connecting the first, second, and third storage tanks in a closed loop with the plurality of hollow copper strands; and an alkaline pump for pumping the cleaning solution, the rinsing water, and the passivation solution through the closed loop. | 09-11-2014 |
| 20140261896 | METHOD FOR CONVERSION TREATING SURFACE OF MAGNESIUM ALLOY WORKPIECE - A method for conversion treating a surface of a magnesium alloy workpiece includes the following steps: providing a magnesium alloy workpiece, degreasing the magnesium alloy workpiece, acid pickling the magnesium alloy workpiece in a first acid pickling treatment step, surface conditioning the magnesium alloy workpiece in a first surface conditioning treatment step, acid pickling the magnesium alloy workpiece in a second acid pickling treatment step, surface conditioning the magnesium alloy workpiece in a second surface conditioning treatment step, pre-phosphating the magnesium alloy workpiece in a pre-phosphating treatment step, and phosphating the magnesium alloy workpiece in a phosphating treatment step to form a phosphating film on the surface of the magnesium alloy workpiece. | 09-18-2014 |
| 148255000 | With additional coating composition containing an atom of chromium, phosphorus or sulfur | 1 |
| 20090266450 | TRICHROME PASSIVATES FOR TREATING GALVANIZED STEEL - In one embodiment, the invention provides a composition useful for passivating a metal surface, in particular a zinciferous surface, comprising, preferably consisting essentially of, most preferably consisting of water and:
| 10-29-2009 |
| 148258000 | Contains an atom of chromium | 1 |
| 20090178734 | PROCESSING SOLUTION FOR FORMING HEXAVALENT CHROMIUM FREE, BLACK CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS, AND METHOD FOR FORMING HEXAVALENT CHROMIUM FREE, BLACK CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS - It is an object of the present invention to provide a processing solution used for forming a hexavalent chromium free, black conversion film, which is applied onto the surface of zinc or zinc alloy plating layers, and which has corrosion resistance identical to or higher than that achieved by the conventional hexavalent chromium-containing conversion film. | 07-16-2009 |
| 148259000 | Contains organic additive other than for pH control | 3 |
| 20110155287 | METHOD FOR CONVERSION TREATING SURFACE OF MAGNESIUM ALLOY WORKPIECE - A method for conversion treating a surface of a magnesium alloy workpiece includes the steps of degreasing, acid pickling, alkali pickling, and chemical converting. A phosphating solution is used in the step of chemical converting and includes the following solution concentrations: 2.89 gram/liter to 8.67 gram/liter of phosphoric acid, 0.3 gram/liter to 1.0 gram/liter of carbamide, 0.39 gram/liter to 1.56 gram/liter of nitric acid, 6 gram/liter to 30 gram/liter of manganese dihydrogen phosphate, and 0.2 gram/liter to 0.6 gram/liter of tannin. | 06-30-2011 |
| 148260000 | Nitrogen-containing organic compound | 2 |
| 20090020186 | Methods of preventing corrosion - The invention provides a method for pre-treating a metal surface with a corrosion inhibitor prior to painting, a method for inhibiting corrosion in a cooling system, wherein the cooling system includes a metal surface and a coolant; and a method for inhibiting corrosion of a reinforcement steel in concrete wherein the method comprising the step of adding to a concrete mixture an anti-corrosive mixture. | 01-22-2009 |
| 20110180186 | METHOD AND SOLUTION FOR COATING METALLIC SURFACES WITH A PHOSPHATING SOLUTION CONTAINING HYDROGEN PEROXIDE, METALLIC OBJECT PRODUCED AND USE OF THE OBJECT - A method for the treatment or pre-treatment of surfaces of metal objects by means of an acidic, aqueous solution containing zinc and phosphate. The phosphating solution contains between 0.1-10 g/L, zinc, 4-50 g/L phosphate calculated as PO | 07-28-2011 |
| 148261000 | Contains an atom of arsenic, boron or metal atom other than alkali metal | 8 |
| 20110024001 | Zirconium-Vanadium Conversion Coating Compositions For Ferrous Metals And A Method For Providing Conversion Coatings - The invention provides a method and composition for coating a ferrous metal surface with a zirconium/vanadium conversion coating which is substantially free of an organic film forming composition and tannins. The method is a low temperature method which contemplates an aqueous conversion coating composition which is low in phosphates and which comprises zirconium, vanadium, fluoride, as well as phosphate ions in a ratio and a concentration effective for providing a conversion-coated ferrous metal surface. | 02-03-2011 |
| 148262000 | Contains an atom of iron or manganese or a group II metal atom (Be, Ca, Sr, Ba, Zn, Cd, Hg) | 7 |
| 20080314479 | HIGH MANGANESE COBALT-MODIFIED ZINC PHOSPHATE CONVERSION COATING - Phosphate conversion coatings having very light color and excellent surface coverage with fine crystal size are obtained using liquid compositions containing phosphate, zinc cations, relatively high concentrations of Co and Mn, and low or no Ni. | 12-25-2008 |
| 20090242080 | PHOSPHATE-TREATED GALVANIZED STEEL SHEET AND METHOD FOR MAKING THE SAME - A method for making a phosphate-treated galvanized steel sheet, including forming a phosphate film on the surface of a galvanized layer of a galvanized steel sheet using a phosphate treatment solution containing Zn | 10-01-2009 |
| 20100132845 | METHOD OF APPLYING ZINC-PHOSPHATE CONVERSION CRYSTAL COATING - A modified zinc-phosphate conversion coating method, presented as the Absorbed Solution Layer Phosphating (ASLP) coating method. This modified zinc-phosphate conversion crystal coating (ZPCCC) method is carried out in a reactor, containing metal substrate, a quantity of phosphate solution and a quantity of inert, solid filler particles, the quantity of phosphate solution being dependent on the solid filler particle's solution absorption ability. The ASLP process is carried out in an interface layer between the substrate and the solid filler particles, with the reactor being constructed to provide movement of treated parts and filler particles relative to each other, continually exposing surfaces of the substrate to fresh phosphate solution. | 06-03-2010 |
| 20110094631 | COMPOSITION AND PROCESS FOR IMPROVED ZINCATING MAGNESIUM AND MAGNESIUM ALLOY SUBSTRATES - Improved compositions and processes for zincating magnesium and magnesium alloy substrates. An aqueous zincating composition having a pH of from about 8 to about 11 and including zinc ions, a complexing agent, fluoride ions and a reducing agent. A non-electrolytic process for zincating a magnesium or magnesium alloy substrate, including immersing the substrate in the non-electrolytic aqueous zincating composition for a time sufficient to deposit a zincate on the substrate. A non-electrolytic process for zincating a magnesium or magnesium alloy substrate, including preparing a aqueous non-electrolytic composition comprising zinc ions, a complexing agent, fluoride ions and a pH in the range from about 8 to about 11; adding to the composition an amount of a reducing agent sufficient to improve deposition of zincate on the magnesium or magnesium alloy substrate; and immersing the substrate in a composition for a time sufficient to deposit the zincate on the substrate. | 04-28-2011 |
| 20110146847 | CHEMICAL CONVERSION TREATMENT LIQUID - A chemical conversion treatment liquid which can stably form a phosphate-type chemical conversion film on a steel material for a joint portion of an oil well steel pipe containing 0.5-13% Cr is developed. | 06-23-2011 |
| 148263000 | Contains an atom of calcium | 2 |
| 20100206437 | TREATMENT SOLUTION FOR INSULATION COATING FOR GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING GRAIN ORIENTED ELECTRICAL STEEL SHEET HAVING INSULATION COATING - A treatment solution for insulation coating for grain oriented electrical steel sheet includes at least one member selected from phosphates of Mg, Ca, Ba, Sr, Zn, Al, and Mn, and colloidal silica in a proportion of 0.2 to 10 mol in terms of SiO | 08-19-2010 |
| 20130139930 | INORGANIC PHOSPHATE CORROSION RESISTANT COATINGS - This disclosure relates to method phosphating an iron surface susceptible to corrosion, the method comprising contacting an iron surface with an aqueous mixture of an acidic phosphate component, a basic component, and at least one silicate; and forming a passivation zone chemically bound to the iron surface of one or more iron ions corresponding to the iron surface, the acidic phosphate component, the basic component, and at least one corrosion inhibitor precursor. | 06-06-2013 |
