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| Number | Title | Issue Date |
| 7390847 | Polymer derivatives for the treatment of metals A composition for the treatment of metal surfaces and for the deposition of metals or metal alloys on plastics surfaces contains a) at least one polymer as component A, composed of the structural element (1) ... | 06/24/2008 |
| 7273337 | Partially coated fastener assembly and method for coating A fastener assembly includes a row of fasteners having a head, a tip, and a portion of a shank coated with a polymer composition. The polymer composition includes a polymer material such as polyurethane and metal particles. The polymer composition is used to provide... | 09/25/2007 |
| 7238264 | Galvanizing device A galvanizing device has at least one jet cell with a contact zone located after the jet cell in the direction of transportation of a work piece through the jet cell. At least one partition separates the jet cell from the contact zone. A seal surrounds the workpiece... | 07/03/2007 |
| 7222657 | Metal object forming method and mold used for the same A metal object is formed by die-casting with the use of a specially treated mold. The mold has cavity-defining surfaces covered by a heat-insulating layer made of a material that includes ceramic powder and heat-resistant resin. Molten metal is injected into the cav... | 05/29/2007 |
| 7055553 | Laminated hose construction having one or more intermediate metal barrier layers A laminated fluid transfer hose construction having one or more intermediate metal barrier layers is provided, as well as, a hose assembly employing the laminated hose construction and coupling means. The inventive hose construction demonstrates improved barrier pro... | 06/06/2006 |
| 7029541 | Trivalent chromate conversion coating In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and substantially free of an oxidi... | 04/18/2006 |
| 6946201 | Chromium (VI)-free conversion layer and method for producing it A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to 1000 h in t... | 09/20/2005 |
| 6887321 | Corrosion resistant surface treatment for structural adhesive bonding to metal A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate. The coated anodized metal s... | 05/03/2005 |
| 6858098 | PROCESSING SOLUTION FOR FORMING HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS, HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM, METHOD FOR FORMING THE SAME A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises: trivalent chromium and oxalic acid in a molar ratio ranging from 0.5/1 to 1.5/1, wherein the trivalen... | 02/22/2005 |
| 6740424 | Surface coated aluminum fine powder and aqueous chromium-free corrosion inhibiting coating composition including the same A chromium-free corrosion inhibiting coating composition, which does not utilize harmful chromium compounds and can be used for corrosion inhibition of a metal surface, comprising a slurry mixture in which coated aluminum fine powder treated with a hydrophilic coupl... | 05/25/2004 |
| 6719852 | PROCESSING SOLUTION FOR FORMING HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM ON ZINC OR ZINC ALLOY PLATING LAYERS, HEXAVALENT CHROMIUM FREE AND CORROSION RESISTANT CONVERSION FILM AND METHOD FOR FORMING THE SAME A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises a silicon compound; trivalent chromium and oxalic acid in a molar ratio ranging from 0.5 to 1.5, where... | 04/13/2004 |
| 6677053 | Surface-treated steel sheet and production method therefor A surface-treated steel sheet includes a steel sheet, an Al--Zn-base alloy plating layer formed on the steel sheet, a chemical conversion film provided on the alloy plating layer, and a concentric layer of a Cr compound that is formed on the alloy plating... | 01/13/2004 |
| 6656294 | Method of reducing elution of lead in lead-containing copper alloy, and drinking water service fittings made of lead-containing copper alloy It is an object of the present invention to provide a processing method for preventing elution of lead in a lead-containing copper alloy to prevent lead from eluting from a faucet metal, etc. made of a lead-containing copper alloy, and a drinking water se... | 12/02/2003 |
| 6560845 | Prefinished deformable metal reflector sheet A prefinished curved reflector suitable for use in recessed lighting, downlighting, head lamps, and tail lamps is made from metal sheet, preferably an aluminum alloy sheet. An outer surface of the metal sheet is either anodized, laminated, or polymer coat... | 05/13/2003 |
| 6554916 | Treatment method for making heat exchanger hydrophilic and heat exchanger treated to be hydrophilic A treatment method for hydrophilicity for a heat exchanger which can maintain the deodorizing property and hydrohilicity even after a long-time use, and a heat exchanger thus treated for hydrophilicity by said method are provided. After a previous acidic ... | 04/29/2003 |
| 6428630 | Method for coating and protecting a substrate A method of coating a substrate is provided. A metallic layer comprising at least about 8% nickel is deposited by thermal spraying on a substrate. The metallic layer has an average density greater than about 80%. A slurry layer comprising from about 10% t... | 08/06/2002 |
| 6395106 | Conversion coatings prepared or treated with calcium hydroxide solutions A conversion coating process that forms a stable and corrosion-resistant oxide layer on metal or metal oxide substrates or layers. Particularly, the conversion coating process involves contacting the metal or metal oxide substrate or layer with the aqueou... | 05/28/2002 |
| 6387538 | Surface-treated steel sheet for fuel tanks and method of fabricating same A surface-treated sheet for fuel tanks includes a cold-rolled steel sheet with a low carbon content, a zinc or zinc-based alloy plating layer formed on the steel sheet, and a chromate film coated on the zinc or zinc-based alloy plating layer. The chromate... | 05/14/2002 |
| 6287704 | Chromate-free conversion layer and process for producing the same A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to ... | 09/11/2001 |
| 6270589 | Method of manufacturing resin coated aluminum alloy plates for drawn and ironed cans A method of manufacturing a resin-coated aluminum alloy sheet for drawn and ironed cans, which coated sheet can be subsequently formed into a drawn and ironed can without its wall breaking, and having substantial strength, the can-forming process includin... | 08/07/2001 |
| 6267826 | Process for producing resin-coated aluminum alloy sheet for drawn/ironed cans A method of manufacturing a resin-coated aluminum alloy sheet for drawn and ironed cans, which can be formed into a drawn and ironed can free from its wall breaking and having enough strength as a can, when it is formed through a composite forming process... | 07/31/2001 |
| 6221176 | Surface treatment of copper to prevent microcracking in flexible circuits In one embodiment, the present invention relates to a flexible laminate, comprising a first flexible polymeric film; a copper layer having a microcracking prevention layer on at least one side the microcracking prevention layer sufficient to prevent micro... | 04/24/2001 |
| 6110297 | Aluminum alloy sheet with excellent formability and method for manufacture thereof The invention provides an aluminum alloy sheet that has excellent formability, high coat-baking hardenability, excellent corrosion resistance, and is particularly suitable for external automobile body plates. The aluminum alloy sheet comprises: 0.9 to 1.3... | 08/29/2000 |
| 6074495 | Method for enhancing the corrosion resistance of chemical conversion coating aluminum A method for treating aluminum to enhance corrosion resistance of its surface. The chemical conversion coating aluminum and aluminum alloys are exposed to an aqueous PU solution to form a PU film on the surface. The aqueous PU solution comprises: (i) 5-15... | 06/13/2000 |
| 6071629 | Organic rust-proof treated copper foil An organic rust-roof treated copper foil characterized in that it has a metallic rust-proof layer formed on the non-adhesive side of the original copper foil and has an organic rust-proof layer formed on said metallic rust-proof layer, the organic rust-pr... | 06/06/2000 |
| 6027580 | Hydrophilicizing post-treatment over chromate conversion coating Substantially improved hydrophilicity can be provided to a metal substrate, particularly an aluminum alloy of the type used for heat exchanger fins, that has been previously provided with a conventional chromium oxide conversion coating, by drying into pl... | 02/22/2000 |
| 5993567 | Compositions and processes for forming a solid adherent protective coating on metal surfaces An aqueous liquid chromate free primary composition for forming a protective coating on metals, particularly aluminum, is made by reacting cobalt(II) cations, carboxylate anions, at least one other type of coordinate complexing agent for cobalt(III) catio... | 11/30/1999 |
| 5985046 | Process for making clear coated aluminum alloy lighting sheet A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and then coated with a U... | 11/16/1999 |
| 5876517 | Chromate-plating bath and process for finishing zinc zinc alloy or cadmium surfaces Process for finishing zinc, zinc alloy or cadmium surfaces which consists in bringing the components to be treated into contact first with an acidic chromate-plating bath based on chromium, cobalt and silver salts and then with a top coat bath comprising ... | 03/02/1999 |
| 5865931 | Reflective vehicle trim A reflective laminated strip includes an aluminum alloy strip having a cleaned and conversion coated outer surface, an adhesive layer adjacent the conversion coated outer surface, and a polymer layer joined to the adhesive layer. An exterior side of the p... | 02/02/1999 |
| 5725683 | Manufacturing clear coated aluminum alloy lighting sheet A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and then coated with a U... | 03/10/1998 |
| 5704995 | Method for forming a black, adherent coating on a metal substrate A black uniform coating with excellent adhesion, bend flexibility, and cosion resistant characteristics can be formed on metals such as aluminum and its alloys, zinc and its alloys, and copper and its alloys such as brass, with the deposition of zinc and... | 01/06/1998 |
| 5637403 | Organic composite-plated steel plate and resin composition for coating material used therein The present invention comprises an improved organic composite-plated steel plate which is obtained by applying a thermosetting resin to a chromate-coated alloy-plated steel plate and curing this, wherein, various aqueous resin compositions having the form... | 06/10/1997 |
| 5614585 | Hydrophilic surface-treating aqueous solution and hydrophilic surface-treating method A hydrophilic surface-treating aqueous solution and a hydrophilic surface-treating method are provided to form a film which can maintain its hydrophilicity. The hydrophilic surface-treating aqueous solution contains as main components polyglutamic acid, b... | 03/25/1997 |
| 5575865 | Process for coating a workpiece of steel with an anti-corrosive agent A process for coating a workpiece of steel with an anti-corrosive agent, comprising the steps of providing the surface of the workpiece with a chemo-mechanical layer, and chromatizing the chemo-mechanical layer, and characterized by the steps of providing... | 11/19/1996 |
| 5531841 | Fluoropolymer aluminum laminate An aluminum fluoropolymer laminate and a method for making such a laminate which includes conversion coating the aluminum and bonding the fluoropolymer onto the conversion coated aluminum is described.... | 07/02/1996 |
| 5494535 | Modification of metal surfaces Cleaned or chemically pretreated metal surfaces are modified using aqueous solutions of amino-containing organic polymers, the metal surfaces thus modified being particularly suitable for coating by cathodic electrodeposition.... | 02/27/1996 |
| 5478414 | Reflective aluminum strip, protected with fluoropolymer coating and a laminate of the strip with a thermoplastic polymer A strip of gray reflective aluminum protected by a conversion coating and a light-permeable fluoropolymer coating which is non-adhesively interstitially mechanically bonded to the microscopic irregularities of the conversion coated surface. The highly ref... | 12/26/1995 |
| 5401334 | Fluoropolymer aluminum laminate An aluminum fluoropolymer laminate and a method for making such a laminate which includes conversion coating the aluminum and bonding the fluoropolymer onto the conversion coated aluminum is described.... | 03/28/1995 |
| 5401337 | Secondary protective treatments for metal surfaces Seal coating compositions and methods of applying them to metallic surfaces, particularly aluminum or alloys thereof, beating a previously formed protective coating, particularly a conversion coating, such as a chromate or phosphate coating or a chrome-fr... | 03/28/1995 |
