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| Number | Title | Issue Date |
| 7918945 | Method for manufacturing surface treated steel material using a chemical conversion treatment liquid A method of manufacturing a surface treated oil well pipe comprising performing chemical conversion treatment on an oil well pipe having a steel composition containing 0.5-13% Cr using a chemical conversion treatment liquid containing zinc and phosphoric acid or man... | 04/05/2011 |
| 7381281 | Surface treatment method of metal member, and metal goods A method of surface-treating a metal member involves heating, or heating under pressure, the metal member in an aqueous alkaline solution having a pH of 9 or more and containing a manganese compound and a chelating agent dissolved in water, whereby a mold release ag... | 06/03/2008 |
| 7354890 | Cleaning composition and method Cleaning compositions composed of specific amounts of carbonic acid and/or carbonate, hydrogen peroxide, aluminum fluoride and water are highly effective for cleaning electronic devices of resist, resist residues, titanium dioxide, aluminum oxide and silicon dioxide... | 04/08/2008 |
| 7341677 | Non-carcinogenic corrosion inhibiting additive A non-carcinogenic corrosion inhibiting additive includes an anodic corrosion inhibitor and/or a cathodic corrosion inhibitor and a solubility enhancer for the inhibitors in the form of a metal complexing agent. ... | 03/11/2008 |
| 7285200 | Process for electrocoating metal blanks and coiled metal substrates Processes for forming a coating on electroconductive flat blanks having two major surfaces and sheared edges are provided. Also provided is a process for forming a multi- composite coating on a pre-sheared, electroconductive, flat blank having two major surfaces and... | 10/23/2007 |
| 7285201 | Process for electrocoating metal blanks and coiled metal substrates Processes for forming a coating on electroconductive flat blanks having two major surfaces and sheared edges are provided. Also provided is a process for forming a multi-composite coating on a pre-sheared, electroconductive, flat blank having two major surfaces and ... | 10/23/2007 |
| 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 |
| 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 |
| 7135075 | Corrosion resistant coating with self-healing characteristics An aqueous solution for depositing an inorganic corrosion resistant coating on a metal substrate is disclosed. The aqueous solution comprises a film-forming agent, a supplemental anion, and a substrate activator. The film-forming agent is a vanadate salt that forms ... | 11/14/2006 |
| 7029769 | Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose hexa-coordinated ion radius, defined by Shannon, R. D., is 0.073 nm or more, and... | 04/18/2006 |
| 6977016 | Surface modified stainless steel A method has been developed for surface modifications of high temperature resistant alloys, such as FeCrAl alloys, in order to increase their resistance to corrosion at high temperatures. Coating it with a Ca-containing compound before heat-treating builds a continu... | 12/20/2005 |
| 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 |
| 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 |
| 6863743 | Polymetalate and heteropolymetalate conversion coatings for metal substrates The present invention provides a conversion coating solution containing polymetalates and/or heteropolymetalates to oxidize the surface of various metal substrates. The polymetalates have the general formula MxOyn−, where M is sele... | 03/08/2005 |
| 6835460 | Dry-in-place zinc phosphating compositions and processes that produce phosphate conversion coatings with improved adhesion to subsequently applied paint, sealants, and other elastomers Excellent adhesion to subsequently applied paint or elastomer is obtained by coating a metal substrate with a phosphate conversion coating by contact with a liquid phosphating solution that contains zinc cations, phosphate anions, and at least one adhesion promoter ... | 12/28/2004 |
| 6819005 | Chemical treatment of helical splines in starter In a starter, a barrel of a one-way clutch fits on an outer circumference of an output shaft. The barrel and the output shaft have spline portions and engage with each other. A chemical conversion coating is formed on at least one of the spline portion of the output... | 11/16/2004 |
| 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 |
| 6756092 | Surface treated steel material, a method for its manufacture, and a 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. Using a chemical conversion treatment liquid to which ... | 06/29/2004 |
| 6753095 | Zinc-based metal plated steel sheet treated with phosphate being excellent in formability and method for production thereof The aim of the present invention is to provide a phosphate treated zinc coated steel sheet with excellent workability. A steel sheet coated with a zinc based alloy has a phosphate treated coating on the surface thereof. The phosphate treated coating comprises mainly... | 06/22/2004 |
| 6743302 | Dry-in-place zinc phosphating compositions including adhesion-promoting polymers Excellent adhesion to subsequently applied paint or elastomer is obtained by coating a metal substrate with a phosphate conversion coating by contact with a liquid phosphating solution that contains zinc cations, phosphate anions, and at least one adhesion promoter ... | 06/01/2004 |
| 6733896 | Process for treating steel-, zinc- and aluminum-based metals using a two-step coating system The present invention comprises a method for treating one or more multi-metal articles. The method comprises exposing the one or more articles to a first treatment composition capable of providing a conversion coating on steel- and zinc-based metal, and exposing the... | 05/11/2004 |
| 6723178 | Process for forming a phosphate conversion coating on metal A metal surface on which a phosphate conversion coating is to be formed and which has been surface conditioned by contact with a liquid surface conditioner composition that contains dispersed fine particles of solid phosphate of at least one divalent or trivalent ca... | 04/20/2004 |
| 6645316 | Post-passivation of a phosphatized metal surface A process for post-passivation of a phosphated metal surface, characterized in that the phosphated metal surface is treated with an aqueous post-passivation solution which contains from 50 to 500 mg/l of nickel ions and from 200 to 1500 mg/l of phosphate ... | 11/11/2003 |
| 6627006 | Method of controlling a treatment line The invention relates to a method of controlling a treatment line. According to said method a) a correlation between one or several variable parameters of the chemical and/or physical processes of the treatment line and one or several characteristic value... | 09/30/2003 |
| 6620263 | Zinc phosphating process and composition with reduced pollution potential The phosphate concentration, and therefore the pollution potential, of conventional high quality phosphating compositions containing zinc, manganese, and, optionally, nickel or copper cations, can be reduced without loss of corrosion protective value of t... | 09/16/2003 |
| 6582530 | Non-chromate protective coating for iron and iron alloys and coating solution A non-chromate protective coating and coating solution useful for coating iron and iron alloys, particularly steel, includes V2 O5, Ce2 (MoO4)3 or SrWO4 as a corrosion inhibitive component... | 06/24/2003 |
| 6569263 | Corrosion protection There has been invented a chemically bonded phosphate corrosion protection material and process for application of the corrosion protection material for corrosion prevention. A slurry of iron oxide and phosphoric acid is used to contact a warm surface of ... | 05/27/2003 |
| 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 |
| 6537387 | Corrosion protection for galvanized and alloy galvanized steel strips A process for the corrosion protection of steel strips coated with zinc or zinc alloy, characterised in that the steel strips coated with zinc or zinc alloy are brought into contact with an aqueous treatment solution having a pH within the range of from 1... | 03/25/2003 |
| 6530999 | Phosphate conversion coating Phosphate conversion coatings having very fine crystal size are obtained using liquid compositions containing phosphate, zinc cations and relatively low concentrations of Co, Ni and Mn.... | 03/11/2003 |
| 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 |
| 6500276 | Polymetalate and heteropolymetalate conversion coatings for metal substrates The present invention provides a conversion coating solution containing polymetalates and/or heteropolymetalates to oxidize the surface of various metal substrates. The polymetalates have the general formula Mx Oyn-, where... | 12/31/2002 |
| 6497772 | Surface treatment for improved hardness and corrosion resistance An article is protected with a wear-resistant coating. The wear-coated article is thereafter treated to produce a chemical conversion coating on any portions of the surface of the article accessible through micropores in the wear-resistant coating. For st... | 12/24/2002 |
| 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 |
| 6461450 | Method for controlling the coating weight for strip-phosphating A process for controlling the layer weight during the phosphating of steel strip zinc-coated on one or both sides, using a phosphating solution which contains 1 to 6 g/l zinc ions and 10 to 30 g/l phosphate ions, characterized in that a Fe(II) ion content... | 10/08/2002 |
| 6458219 | Metal surface-treating method This invention provides a metal surface-treating method which comprises a chemical conversion step of dipping a substrate in an acidic aqueous zinc phosphate solution, and using an aqueous zinc nitrite solution as an accelerator, said aqueous zinc nitrite... | 10/01/2002 |
| 6447662 | Process for phosphatizing, rerinsing and cathodic electro-dipcoating A process for pretreating surfaces made from steel, galvanised steel and/or aluminum and/or alloys thereof, wherein, in a first process stage, phosphating is performed using a low-nickel zinc phosphating solution; in a second process stage, the phosphated... | 09/10/2002 |
| 6395105 | Phosphating process with a metalliferous re-rinsing stage A process for phosphating metal surfaces in which a nitrite- and nickel-free zinc-containing phosphating solution is applied to the metal surfaces which, if desired, are then rinsed and subsequently after-rinsed with an aqueous solution with a pH value of... | 05/28/2002 |
| 6379474 | Phosphating method accelerated by N-oxides An acidic aqueous phosphating solution is presented having 0.2 to 3 g/l of zinc ions, 3 to 50 g/l of phosphate ions expressed as PO4-3, and 0.05 to 4 g/l of an organic N-oxide containing a saturated, unsaturated or aromatic 5- or 6-m... | 04/30/2002 |
| 6376092 | Surface-treated steel sheet and manufacturing method thereof The present invention has an object to provide a surface-treated steel sheet which has highly balanced corrosion resistance and formability, and satisfies fundamental properties required mainly for steel sheets for automobile body, and a manufacturing met... | 04/23/2002 |
