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| Number | Title | Issue Date |
| 4230758 | Fluorine resin coated structure of aluminum or aluminum alloy A fluorine resin coated aluminum structure comprising: (a) an aluminum substrate with a roughened surface; (b) a coating of aluminum oxide formed on the surface of the aluminum substrate; and (c) a baked coating of a fluorine resin firmly bonded to the aluminum oxi... | 10/28/1980 |
| 4212701 | Process and composition of low toxicity for preparing aluminum surfaces for adhesive bonding The invention provides a process and composition of low toxicity for prepng aluminum surfaces for adhesive bonding. The process involves treating the aluminum with an etching composition composed of sulfuric acid, ferric sulfate and water. The invention ... | 07/15/1980 |
| 4210695 | Method of forming colored patterns on aluminum or its alloys A colored pattern imitating the grain of wood is formed on the surface of an article formed of an aluminum or its alloy by dipping the article in a coating bath floating a coating material in a multilinear pattern or multiannular pattern to form on the su... | 07/01/1980 |
| 4201836 | Aluminum substrates grained with a saturated solution of aluminum salts of mineral acids A method for the production of aluminum substrates useful in the production of lithographic printing plates which comprises graining the surface of an aluminum sheet in a saturated solution of an aluminum salt of a mineral acid to which up to 10% of a min... | 05/06/1980 |
| 4173075 | Engraver's template An engravers template having a desired pattern therein with engraved portions and raised portions. An aluminum sheet is provided having an aluminum oxide layer on one side and a plastic layer on the opposite side. The desired engraved pattern is etched th... | 11/06/1979 |
| 4139386 | Method for obtaining engravers template Method for obtaining an engravers template having a desired pattern therein with engraved portions and raised portions. An aluminum sheet is provided having an aluminum oxide layer on one side and a plastic layer on the opposite side. The desired engraved... | 02/13/1979 |
| 4126522 | Method of preparing aluminum wire for electrical conductors Aluminum wire, of either pure aluminum or an aluminum alloy is plated with a firm layer of nickel by passing the wire through a pickling bath of an aqueous solution of phosphoric and hydrochloric acids at a temperature of between 50° and 70° C and then ... | 11/21/1978 |
| 4126483 | Method of adherency of electrodeposits on light weight metals A method of treating an aluminum article prior to plating by first cleaning the article to be substantially free of aluminum oxide and then immersing the article in a solution containing sodium hydroxide, sodium metasilicate, trisodium phosphate and sodiu... | 11/21/1978 |
| 4124516 | Dot-etching solution A dot-etching solution for dot-etching a halftone image of a metal composed mainly of aluminum, the dot-etching solution comprising (1) water, (2) (a) phosphorous acid or (b) phosphorous acid and phosphoric acid, (3) at least one of a bismuth compound and an antimo... | 11/07/1978 |
| 4122215 | Electroless deposition of nickel on a masked aluminum surface A method for depositing electroless nickel on aluminum or aluminum alloy is described. The method is particularly useful for fabricating bonding pads on aluminum metallized semiconductor devices and for creating beam leads. The described method deposits a... | 10/24/1978 |
| 4116699 | Aluminium polishing compositions Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes if the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound, in which at... | 09/26/1978 |
| 4110147 | Process of preparing thermoset resin substrates to improve adherence of electrolessly plated metal deposits A process is disclosed comprising laminating an anodically treated aluminum surface against a thermoset plastic substrate, whereby the surface of the substrate after chemically removing the aluminum has an improved affinity for the adherence thereon of el... | 08/29/1978 |
| 4089736 | Method of removing Al-Cr-Co coatings from nickel alloy substrates A method of removing a coating containing aluminium and chromium in combination with cobalt from a nickel base alloy substrate. The coated substrate is immersed in a solution containing the following constituents (by weight): Ferric Sulphate; 6-14% Hydroc... | 05/16/1978 |
| 4087367 | Preferential etchant for aluminium oxide A method of etching aluminium oxide and/or cleaning aluminium surfaces with an etchant consisting of a solution of a fluoride in an organic solvent, which solution is substantially free from hydrofluoric acid and unbound water.... | 05/02/1978 |
| 4080246 | Novel etching composition and method for using same An improved etchant solution for selectively etching unprotected areas of metal film from a substrate which comprises between about 65 and about 90 parts by weight phosphoric acid, between about 0.5 and about 5 parts by weight of a perchloric acid compone... | 03/21/1978 |
| 4069094 | Method of manufacturing apertured aluminum oxide substrates A method for making an apertured aluminum oxide substrate by selectively masking a sapphire wafer, depositing aluminum oxide adjacent the wafer and the mask, and removing the aluminum oxide deposited adjacent the mask and the mask, whereby an aperture is ... | 01/17/1978 |
| 4067751 | Aqueous NaCl test solution for aluminum and its alloys A corrosive solution, designed to accelerate the rupture of workpieces of aluminum and its alloys in stress-corrosion-cracking tests, contains sodium chloride, hydrogen peroxide and sodium acetate dissolved in water, with maintenance of an acidic pH.... | 01/10/1978 |
| 4044106 | Reclamation of phosphate from bright dip drag-out Rinse acid collected from an aluminum bright dipping operation is reacted with soda alkalies at 80° C or higher to yield a solution of trisodium phosphate, Na3 PO4, sodium aluminate, NaAlO2, sodium nitrate, NaNO3 | 08/23/1977 |
| 4035209 | Method of preventing deterioration by heat Substrate materials are prevented from deteriorating from exposure to intense heat by protecting the substrate with aluminum foil having at least one surface thereof roughened and subjecting said substrate to heat. The foil is capable of resisting tempera... | 07/12/1977 |
| 4011099 | Preparation of damage-free surface on alpha-alumina A chemical polishing process for alpha-alumina utilizing a silica colloid polishing fluid which is both a reactant and a medium for the removal of the reaction product is disclosed.... | 03/08/1977 |
| 4008084 | Metallic image forming material A metallic image forming article comprising a support, an intermediate layer comprising Al and a metal having an ionizing tendency lower than that of Al, and a photosensitive resin layer on the intermediate layer.... | 02/15/1977 |
| 4003772 | Method for preparing thin film integrated circuit A thin film integrated circuit consists of a first conductor of aluminum extended in any desired direction on an insulating substrate, an anodized film formed by anodization in a chromic acid solution at positions other than cross-connectional parts on th... | 01/18/1977 |
| 3988254 | De-smutting agent A de-smutting agent comprising an aqueous solution containing a water-soluble hydrogen peroxymonosulfate and a water-soluble hydrogen sulfate and a method for removing smut from aluminum.... | 10/26/1976 |
| 3964914 | Electromarking solution This invention is directed to an aqueous halogen-free electromarking solution which possesses the capacity for marking a broad spectrum of metals and alloys selected from different classes. The aqueous solution comprises basically the nitrate salt of an a... | 06/22/1976 |
| 3948701 | Process for manufacturing base material for printed circuits In a process for making a printed circuit, a method of forming a base for the circuit, including coating a cover foil with a decomposable film, then bonding the film to a carrier, and then removing the cover foil from the film. A protected base useful for... | 04/06/1976 |
| 3944421 | Process for simultaneous development and etch of photoresist and substrate Photoresists are developed and the supporting substrate is etched simultaneously therewith by bringing the resist (after exposure) into physical contact with a fluid containing a developer for the resist and an etchant for the supporting substrate.... | 03/16/1976 |
| 3935083 | Method of forming insulating film on interconnection layer A method for forming an insulating film on an interconnection layer for an integrated circuit, or the like, includes the steps of forming an aluminum layer on the surface of a substrate, oxidizing a thin portion of the upper surface of the aluminum layer ... | 01/27/1976 |
| 3935052 | Acid engraving machine device An acid engraving device containing a reservoir for acid, a valve to meter the acid flow from the reservoir, and a ball point etching pen to apply acid to the work surface.... | 01/27/1976 |
| 3932243 | Cleaning and polishing compound for barrel and vibratory finishing of ferrous and non-ferrous metals A formulation for the surface treatment of metal articles wherein the article to be treated is immersed and agitated in a working solution of the formulation. The formulation consists essentially of the esterification reaction product of phosphoric acid b... | 01/13/1976 |
