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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 |
| 7101469 | Metal pieces and articles having improved corrosion resistance A metal piece having an organic coating with improved corrosion resistance and adhesion is described which comprises a zinc or zinc alloy plated metal piece having on its surface, a chromate film deposited from an aqueous acidic chromium solution comprising trivalen... | 09/05/2006 |
| 7048822 | Packaging material for polymer cell and method for producing the same A polymer battery module packaging sheet includes, as essential components, a base layer (61), an aluminum layer (62), chemical conversion coatings (64a, 64b) coating the opposite surfaces of the aluminum layer (62), ... | 05/23/2006 |
| 7030183 | Surface treating method and surface treating agent A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per liter, 2–60 g Zn, 40–300 g caustic alkali, 0.01–50 g adsorbent, 0... | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6294262 | Composition and process for anticorrosive treatment of non-ferrous metal Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO3 and an inorganic acid with phosphorous acid as a reducing agent unti... | 09/25/2001 |
| 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 |
| 6224657 | Hexavalent chromium-free phosphate-bonded coatings A heat curable bonding composition of the present invention comprises an aqueous solution containing phosphate ion (PO4-3) and chromium(III) ion (Cr+3, or trivalent chromium) and is substantially free of hexavalent chromiu... | 05/01/2001 |
| 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 |
| 6126758 | Aluminide-silicide coatings, coating compositions, process for coating and improved coated products An improved aluminide coating especially for superalloy substrates. Slurry coating compositions of eutectic metal alloy powders and of non-eutectic metal powders, including an elemental powder of a silicide-former in a heat-curable liquid binder. A proces... | 10/03/2000 |
| 6096140 | Treating solution and treating method for forming protective coating films on metals A metallic surface treating solution characterized in that it is an aqueous solution at pH 0.1 to 6.5 comprising a source of at least one selected from the group consisting of Mo, W, V, Nb, Ta, Ti, Zr, Ce, Sr, and trivalent chromium, an oxidizing substanc... | 08/01/2000 |
| 6048921 | Method for applying conversion coating with wick applicator The present invention relates to an applicator for flowable materials which comprises a generally cylindrical housing having a chamber, a discharge opening, a wick projecting through said discharge opening, and a projecting structure for shielding the use... | 04/11/2000 |
| 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 |
| 5702759 | Applicator for flowable materials The present invention relates to an applicator for flowable materials which comprises a generally cylindrical housing having a chamber, a discharge opening, a wick projecting through said discharge opening, and a projecting structure for shielding the use... | 12/30/1997 |
| 5525431 | Zinc-base galvanized sheet steel excellent in press-formability, phosphatability, etc. and process for producing the same A zinc-base galvanized sheet steel which comprises zinc-base plated sheet steel and, formed on the plating layer surface, an inorganic covering layer which contains at least one inorganic oxide in an amount of 1-500 mg/m2 in terms of the weight... | 06/11/1996 |
| 5507884 | Process for forming a sparingly soluble chromate coating on zinciferous metal coated steel A highly corrosion-resistant, highly alkali-resistant, and very paintable chromate film on the surface of a steel substrate coated with Zn-containing metal is formed by coating the substrate with an aqueous chromate bath and drying into place, preferably ... | 04/16/1996 |
| 5451271 | Conversion treatment method and composition for aluminum and aluminum alloys The paint adhesion and corrosion resistance of surfaces of aluminum and its alloys, particularly when using a paint based on poly{vinyl chloride}, is improved by using a conversion coating solution having a pH in the range from 1.0 to 3.0 and consisting e... | 09/19/1995 |
| 5415702 | Black chromium-containing conversion coatings on zinc-nickel and zinc-iron alloys A method is described for preparing a black chromium-containing conversion coating on a zinc-nickel alloy surface containing at least about 8% nickel in the alloy or on a zinc-iron alloy surface. The method of the invention comprises contacting said surfa... | 05/16/1995 |
| 5407749 | Iridescent chromium coatings and method A method is described for producing an iridescent chromium coating on a zinc-nickel alloy surface containing at least about 8% nickel in the alloy. The method of the invention comprises (A) contacting said surface with an aqueous acidic solution maintained at ... | 04/18/1995 |
| 5399209 | Composition and method for chromating treatment of metal A chromate conversion coating with excellent cold workability and protection against corrosion after subsequent painting can be formed on metal surfaces, particularly on galvanized steel sheet, by drying in place on the metal an amount of an acidic aqueou... | 03/21/1995 |
| 5395655 | Composition and process for chromating metal surfaces A chromating treatment composition particularly suitable for preparing aluminum and stainless steel for clear coating comprises water, anions containing hexavalent chromium, trivalent chromium cations, phosphate ions, dry process finely divided silica, an... | 03/07/1995 |
| 5393354 | Iridescent chromium coatings and method A method is described for producing an iridescent chromium coating on a zinc-nickel alloy surface containing at least about 8% nickel in the alloy. The method of the invention comprises (A) contacting said surface with an aqueous acidic solution maintained at ... | 02/28/1995 |
| 5373986 | Fluoride cleaning of metal surfaces and product A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together by fibrillated polytetrafluoroethylene. This is applied to... | 12/20/1994 |
| 5366567 | Method for chromating treatment of zinc coated steel A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges produces a protective layer on the surface of zinc coated steel ... | 11/22/1994 |
| 5356679 | Pipe surface coating with conversion and thermosetting resin layer, and process for the coating application A multilayer pipe surface coating for water system elements requiring high corrosion resistance includes at least one conversion layer and one thermosetting synthetic resin layer.... | 10/18/1994 |
| 5300158 | Protective coating having adhesion improving characteristics There is provided a method of treating a copper or copper alloy substrate to provide improved resistance to both oxidation and to chemical attack. The substrate is immersed in an aqueous solution containing both chromium (VI) ion and phosphate ions. The t... | 04/05/1994 |
| 5242714 | Process for forming protective base coatings on metals A process for forming a chromium/silica/phosphate protective conversion coating on a metal surface is improved by pretreating the surface with a composition comprising at least one of (i) H2 TiF6, (ii) H2 SiF6, ... | 09/07/1993 |
| 5230750 | Chromating method of zinc-based plated steel sheet A chromating liquid for forming a chromate film on a Zn or Zn-alloy plated steel sheet, is prepared by adding and mixing a silane coupling agent in a molar ratio of from 0.05 to 0.3 relative to Cr6+ contained in an aqueous chromating liquid whi... | 07/27/1993 |
| 5164235 | Anti-tarnish treatment of metal foil A process for imparting tarnish resistance to copper and copper alloy materials, particularly copper foil. The material is first treated with an acidic chromium-containing solution to deposit chromium ions on said foil. Thereafter the material is treated ... | 11/17/1992 |
| 5141575 | Surface treatment for zinciferous surfaces Zinciferous surfaces, particularly those of galvanized steel, may be effectively protected against corrosion, either as treated or after painting, while remaining easy to weld, by contact with an aqueous solution containing chromium in both +6 and +3 vale... | 08/25/1992 |
| 5091023 | Composition and process for chromating galvanized steel and like materials The resistance of chromated zinc surfaced steel objects, particularly plates and sheets, to extraction of hexavalent chromium by alkaline degreasing solutions used on the chromated objects, can be substantially increased by utilizing an aqueous acidic liq... | 02/25/1992 |
| 5066540 | Flake materials in coating compositions A cured coating composition and substrate coated with the cured coating composition which coating is based upon an aqueous acid binder solution containing phosphate and chromate and/or molybdate ions into which has been dispersed a blend of metallic powde... | 11/19/1991 |
| 5039360 | Method for coating hot metal surfaces A method for coating a metal surface includes heating an untreated metal surface to a temperature of about 40° C. to 250° C. and spraying a coating composition onto the hot untreated metal surface, while continuously moving the metal surface, so that a ... | 08/13/1991 |
