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| Number | Title | Issue Date |
| RE40406 | Process for coating and/or touching up coatings on metallic surfaces A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter of phosphorous-containing ino... | 07/01/2008 |
| 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 |
| 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 |
| 7005011 | Method of removing iron oxide deposits from the surface of titanium components Disclosed is a method and solvent composition capable of removing iron oxide deposits from the surface of titanium components without substantially damaging the underlying titanium component. Iron oxide deposits may be removed from the surface of a titanium componen... | 02/28/2006 |
| 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 |
| 6925586 | Methods and systems for centrally-controlled client-side filtering Methods and systems to minimize the number of messages transmitted between a client and a server in a client-server network. The messages may be error messages, and may be associated with a log such as an error log. The client requests permission of the server to tr... | 08/02/2005 |
| 6899770 | Composition and process for treating metal surfaces A metal substrate is provided with a coating that (i) provides substantial corrosion resistance, (ii) makes it possible to shape the substrate by roll forming and similar light cold forming operations without the need for any oil or wax lubricant, and (iii) has good... | 05/31/2005 |
| 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 |
| 6849138 | Method for surface treatment of aluminum alloy high-temperature processed articles The surface of an aluminum alloy high-temperature processed article containing Mg is heated at a high temperature of 200° C. or above, thereafter the surface is etched with an aqueous solution containing a chelating agent, and then at least one surface treatment se... | 02/01/2005 |
| 6723177 | Life extension of chromium coating and chromium alloys A process for treating a chromium coating and/or the surface of a chromium alloy to increase hardness, and/or to decrease coefficient of friction; chromium alloys and/or chromium coatings with surfaces having increased hardness and/or decreased coefficient of fricti... | 04/20/2004 |
| 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 |
| 6596097 | Method of coating a metal substrate with a radioactive layer A method for the immobilization of a radioactive anion on the surface of a metal substrate, said method comprising treating the substrate with an oxidizing agent in the presence of a solution of a radioactive anion which forms an insoluble salt with ions ... | 07/22/2003 |
| 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 |
| 6508890 | Method of enhancing the conductivity of a conductive surface The present invention is drawn to a method of lowering the net resistivity of an interconnect by depositing a monomer layer upon an aluminum bonding pad, the treatment thereof to cross link the monomer to form an electrically conductive polymer, and simul... | 01/21/2003 |
| 6503340 | Method for producing chromium carbide coatings A method for producing chromium carbide coatings on steel provides a steel component having a surface which is carburized to contain at least about 0.40% by weight carbon and is followed by chromizing the surface to form a chromium carbide coating on the ... | 01/07/2003 |
| 6465114 | -Zn coated steel material, ZN coated steel sheet and painted steel sheet excellent in corrosion resistance, and method of producing the same A coated steel material excellent in corrosion resistance and a method of producing the same, wherein a coated steel material has on the surface of the steel sheet a Zn-alloy coating layer containing 1-10 wt % of Mg, 2-19 wt % of Al and 0.01-2 wt % of Si,... | 10/15/2002 |
| 6461449 | Conversion coating zinciferous surfaces to resist blackening and white rust Metal surfaces, particularly the zinciferous surfaces of zinc-coated steel, can be given a chromate conversion coating that is superior in terms of blackening resistance and white rust resistance by drying into place on the surfaces a layer of a treatment... | 10/08/2002 |
| 6451130 | Method for forming Cr2O3 film on stainless steel surface A method for forming a chromium oxide film on the surface of a stainless steel sample. The method includes: (a) placing a sample having stainless a steel surface into a vacuum furnace, evacuating the vacuum furnace to a pressure of 2×10-7 to 3... | 09/17/2002 |
| 6447620 | Water-based surface-treating agent for metallic material A water-based surface-treating agent for metallic materials which gives a film highly satisfactory in corrosion resistance, blackening resistance, wet secondary adhesion to topcoatings, low-pollution characteristics (amount of fixed chromium), chemical re... | 09/10/2002 |
| 6444054 | Slurry compositions for diffusion coatings Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially unifo... | 09/03/2002 |
| 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 |
| 6379750 | Process for enhancing the adhesion of organic coatings to metal surfaces A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in treating the metal surface prior to applicati... | 04/30/2002 |
| 6329067 | Chromating solution and chromated metal sheet In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent c... | 12/11/2001 |
| 6280535 | Manufacturing process on chromate-coated lead-containing galvanized steel sheet with anti-black patina property and anti-white rust property A production method for a lead-containing hot-galvanized chromated steel sheet with excellent resistance to blackening and white rust formation comprises: (a) plating a steel sheet in a hot-galvanizing bath containing 0.05-0.3 wt. % lead and 0.1-0.3 wt. %... | 08/28/2001 |
| 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 |
| 6206981 | Process for enhancing the adhesion of organic coatings to metal surfaces A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in conjunction with a chromating composition in ... | 03/27/2001 |
| 6190464 | Chromating solution and chromated metal sheet In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent c... | 02/20/2001 |
| 6183547 | Environmentally acceptable inhibitor formulations for metal surfaces A composition for inhibiting corrosion of metal surfaces comprises permanganate and a very low concentration of chromium (VI). The concentration of chromium (VI) in the aqueous solution is less than about 100 micrograms per liter, and the concentration of... | 02/06/2001 |
| 6183880 | Composite foil of aluminum and copper This invention provides a composite foil comprising an aluminum carrier layer and an ultra-thin copper foil having a protective layer disposed between them comprising a porous copper layer and an interpenetrating zinc layer. A process for producing such c... | 02/06/2001 |
| 6143430 | Surface-treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability Surface treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability is provided. A steel sheet containing 0.0005-0.0040% of C, 0.005-0.020% of P, 0.0005-0.0040% of N, and 0.0005-0.0030% of B has on at least o... | 11/07/2000 |
| 6110262 | Slurry compositions for diffusion coatings Slurry coating compositions are provided for metal substrates, particularly nickel or cobalt-containing alloys, that enable inward-type diffusion aluminide coatings having a substantially uniform coating thickness to be formed thereon. Substantially unifo... | 08/29/2000 |
| 6039860 | Method for chromium plating titanium alloy A method for chromium plating a part made of titanium or titanium alloy eliminates the conventional chemical cleaning of the part prior to electroplating, and instead employs a mechanical cleaning of the part including degreasing the part and then grit-bl... | 03/21/2000 |
| 5944918 | Method for preparing pre-coated aluminum articles and articles prepared thereby An aluminum-alloy article such as a fastener is prepared by providing an aluminum-alloy article that is not in its final heat-treated state, and is preferably in its annealed state. A curable organic coating material is also provided. The method includes ... | 08/31/1999 |
| 5912050 | Method for chromizing small parts An improved process for chromizing commercial quantities of small, industrial, ferrous-based parts, such as but not limited to threaded connectors, pins, bolts, nuts, washers, fasteners, fittings, couplings, studs, etc., uses a retort filled with layers o... | 06/15/1999 |
| 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 |
| 5807442 | Chromate passivating and storage stable concentrate solutions therefor A concentrated aqueous solution containing: (A) a component of dissolved phosphate ions; (B) a component of dissolved hexavalent chromium; (C) a component of dissolved anions selected from the group consisting of BF4-, AlF6-3 | 09/15/1998 |
| 5730809 | Passivate for tungsten alloy electroplating A passivate for tungsten alloy electroplates. The passivate includes an effective quantity of CrO3 in an aqueous bath having a pH of from about 3.5 to about 7.5.... | 03/24/1998 |
| 5707505 | Method for the electrophoretic dip coating of chromatizable metal surfaces A method is described for the electrophoretic enamelling of chromatizable metal surfaces. Improved adhesion of the enamel is achieved by a chromating pretreatment of the metal surfaces, the chromated metal surfaces being kept wet from the time of their be... | 01/13/1998 |
