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| Number | Title | Issue Date |
| 7169284 | High surface area cathode for electrolytic capacitors using conductive polymer The present invention is directed to a conductive polyethylenedioxythiophene (PEDOT) polymer coated electrode adapted for use as a cathode electrode of an electrolytic capacitor and a method of manufacturing the same. According to the present invention, a metal foil... | 01/30/2007 |
| 7166205 | Method for producing hard surface, colored, anodized aluminum parts The present invention uses a two-step anodizing process to produce a colored anodized coating on the surface of an aluminum part. In accordance with this invention, a thin hard anodized coating layer is first formed on the surface of the aluminum part and then growi... | 01/23/2007 |
| 7048814 | Halogen-resistant, anodized aluminum for use in semiconductor processing apparatus We have discovered that the formation of particulate inclusions at the surface of an aluminum alloy article, which inclusions interfere with a smooth transition from the alloy surface to an overlying aluminum oxide protective film can be controlled by maintaining th... | 05/23/2006 |
| 7036219 | Method for manufacturing a high-efficiency thermal conductive base board A method for manufacturing a high-efficiency thermal conductive base board for electrical connection with an electronic component includes the steps of: (a) placing a metal substrate in an electrolytic bath; (b) oxidizing the metal substrate in the electrolytic bath... | 05/02/2006 |
| 6896787 | Metal articles with smooth surface having durable visible marking and method of manufacture Metal articles having a durable visible marking on a smooth Type III hard anodized surface particularly useful for shock absorber tubes are produced by applying an alkaline solution to the anodized surface for not less than about 15 seconds at temperature of 100°-1... | 05/24/2005 |
| 6866945 | Magnesium containing aluminum alloys and anodizing process An anodized aluminum alloy comprises an aluminum alloy comprising magnesium in an amount greater than 3 weight percent based on the total weight of the aluminum alloy; and a clear porous oxide layer having a thickness greater than about 5 micrometers disposed on and... | 03/15/2005 |
| 6858126 | High capacitance anode and system and method for making same A method of producing electrodes for electrolytic capacitors by etching metal foil in a low pH etching electrolyte is disclosed. The low pH electrolyte is an aqueous solution, which comprises hydrochloric acid, glycerol, sodium perchlorate or perchloric acid, sodium... | 02/22/2005 |
| 6844082 | Gas distribution plate with anodized alumnium coating A new and improved, anodized aluminum gas distribution plate for process chambers, particularly an etch chamber. The gas distribution plate includes an aluminum body having multiple gas flow openings extending therethrough and an alumina anodized coating or layer on... | 01/18/2005 |
| 6834708 | Aluminium alloys strips with high surface homogeneity and method for making same An aluminum alloy strip of high surface homogeneity, intended for applications requiring good visual quality or specific optical properties, such as reflectors and anodized plates for construction and decoration. The strip may be characterized by an upper side havin... | 12/28/2004 |
| 6379523 | Method of treating surface of aluminum blank With the purpose of forming an anodic oxide coating that is given conductivity or other new functions on the surface of aluminum-based material with high productivity, anodizing of aluminum-based material (2) is performed in an anodizing bath containing s... | 04/30/2002 |
| 6372357 | External component of endoscope An external component of an endoscope includes an aluminum alloy base member whose surface is subjected to anodic oxidation, and thereafter, is subjected to an electrolytic deposition thereon.... | 04/16/2002 |
| 6231744 | Process for fabricating an array of nanowires An array of nanowires having a relativley constant diameter and techniques and apparatus for fabrication thereof are described. In one embodiment, a technique for melting a material under vacuum and followed by pressure injection of the molten material in... | 05/15/2001 |
| 6149795 | Fungus resistant boric acid-sulfuric acid anodizing An improved method of anodizing an aluminum or aluminum alloy workpiece including the steps of: (a) providing an aqueous anodizing bath consisting essentially by weight of about 3 to 5 percent sulfuric acid, from about 0.5 to 1 percent boric acid, not mor... | 11/21/2000 |
| 6139713 | Method of manufacturing porous anodized alumina film A plurality of recesses having the same interval and array as those of pores of an alumina film, which are to be formed in anodizing, are formed on a smooth surface of an aluminum plate in advance, and then, the aluminum plate is anodized. With this proce... | 10/31/2000 |
| 6136176 | Capacitor with conductive polymer Capacitor elements made with a solid polymeric electrolyte show reduced leakage current when reformed at about 60-85% of formation voltage during the impregnation phase between successive layers of polymeric electrolyte.... | 10/24/2000 |
| 5820740 | High-absorptance high-emittance anodic coating A colored anodic coating for use on surfaces of substrates, e.g. aluminum substrates in which it is desirable to maintain a high solar absorptance (a) and a high infrared emittance (e), particularly in low earth orbit space environments. This anodic coati... | 10/13/1998 |
| 5693208 | Process for continuously anodizing strips or wires of aluminum A process for producing an oxide layer with a pore structure on the surface of a strip or wire of aluminum or an aluminum alloy is such that the strip or wire is passed continuously through an electrolyte and simultaneously anodized under conditions that ... | 12/02/1997 |
| 5431802 | Cylinder tube and process for producing same A cylinder tube comprising an aluminum tube formed on its outer surface with an outside oxide film having a hardness of not lower than 150 HV to less than 350 HV and on its inner surface with an inside oxide film having a hardness of not lower than 350 HV... | 07/11/1995 |
| 5230788 | Insulated metal substrates and process for the production thereof The disclosure relates to insulated metal substrates and to a process for producing these substrates. These substrates have an aluminium base, an insulant constituted by an alumina film obtained by anodizing at least one of the faces of said base and at l... | 07/27/1993 |
| 5217600 | Process for producing a high emittance coating and resulting article Process for anodizing aluminum or its alloys to obtain a surface particularly having high infrared emittance by anodizing an aluminum or aluminum alloy substrate surface in an aqueous sulfuric acid solution at elevated temperature and by a step-wise curre... | 06/08/1993 |
| 5217601 | Method for impartation of blue color to aluminum or aluminum alloy Durable and clear blue color of freely controlled density can be expeditiously and efficiently impated to an anodic oxide film of aluminum by a method which comprises forming the anodic oxide film on the aluminum or aluminum alloy, then subjecting the alu... | 06/08/1993 |
| 5141603 | Capacitor method for improved oxide dielectric Capacitor structure capable of achieving increased energy storage density is disclosed together with a fabrication sequence for the capacitor and its anodic oxide dielectric material. Soft porous aluminum oxide which has been formed in a first anodization... | 08/25/1992 |
| 4936957 | Thin film oxide dielectric structure and method A metallic oxide such as aluminum oxide of significantly improved electrical properties is disclosed. The method of oxide formation includes a combination of soft porous anodization followed by transformation to a hard barrier form of oxide using inter al... | 06/26/1990 |
| 4894127 | Method for anodizing aluminum A controlled method of anodizing aluminum comprises formation of an aqueous solution of sulfuric and boric acids, immersion of a workpiece in the solution maintained at about room temperature and controlled application of voltage to achieve a current dens... | 01/16/1990 |
| 4879018 | Low voltage anodizing process and apparatus A low voltage anodizing process for anodic oxidation of metals in which are used: (i) an anodizing bath containing an electrolyte, an anode and a cathode; and (ii) and AC fed DC power supply for supplying pulsating DC power to the anodizing bath; the anod... | 11/07/1989 |
| 4859290 | Printing plate precursors A lithographic printing plate precursor for use in a silver diffusion transfer system comprises a grained and anodized aluminum substrate having coated thereon a sol containing nuclei for precipitating silver from a silver complex. The substrate has an an... | 08/22/1989 |
| 4737246 | Anodizing process for producing highly reflective aluminum materials without preliminary brightening processing An improved process is provided for the production of aluminum reflective material having a higher total reflectance value. The process comprises controlling the anodizing conditions of a bright rolled aluminum alloy by immersing the alloy in a DC anodizi... | 04/12/1988 |
| 4606796 | Colored, anodized aluminum-base article and method of preparing same A colored, anodized aluminum-base article including an aluminum-base substrate, and first and second anodized aluminum oxide films overlaid thereon. The inner, second film has a hardness of about 330 Hv or more, while the outer, first film is more porous ... | 08/19/1986 |
| 4601796 | High reflectance semi-specular anodized aluminum alloy product and method of forming same The invention comprises a highly reflective anodized aluminum alloy product consisting essentially of 0.25 to 1.5 wt. % magnesium with the balance aluminum anodized in a DC anodizing bath containing at least 26% sulfuric acid at a current density of at le... | 07/22/1986 |
| 4584067 | Etching of aluminum electrolytic capacitor foil Aluminum electrolytic capacitor foil is etched by first subjecting high-cubicity foil to a chemical etching stage in which the etchant is an acidic aqueous solution containing an acid having anions for anodizing aluminum, hydrochloric acid, transition met... | 04/22/1986 |
| 4566952 | Two-stage process for the production of anodically oxidized aluminum planar materials and use of these materials in manufacturing offset-printing plates Disclosed is a process for the production of a material in the form of a plate, a foil or a strip, from aluminum or an alloy thereof, which has been chemically, mechanically and/or electrochemically roughened. The process comprises a two-stage oxidation i... | 01/28/1986 |
| 4502925 | Process for aluminum surface preparation A method for treating an aluminum sheet useful for lithography by etching said sheet in an aqueous bath containing up to about 25% of nitric and/or hydrochloric acids and from about 1% to about 25% of an inorganic fluorine containing acid or salt thereof.... | 03/05/1985 |
| 4483750 | Process for anodizing highly reflective aluminum materials An improved process is provided for the production of aluminum reflective material having a higher total reflectance value. The process comprises controlling the anodizing conditions of an aluminum alloy previously subjected to a brightening process by im... | 11/20/1984 |
| 4448647 | Electrochemically treated metal plates According to the invention there is provided an electrochemical process for applying a firmly bonded insoluble metal oxide-organic complex on a metal surface by employing the metal as anode and a water-soluble poly basic organic acid as electrolyte togeth... | 05/15/1984 |
| 4444628 | Process for treating Al alloy casting and die casting Aluminum alloy castings and aluminum alloy die castings are treated in the process comprising the steps of chemically polishing the castings, processing the chemically polished castings by barreling and/or by blasting and subjecting successively the casti... | 04/24/1984 |
| 4421610 | Electrolytic coloring process An electrolytic coloring process for aluminum or aluminum alloy is disclosed in which the aluminum is subjected to electrolytic treatment, in the absence of metal salts, in a low disolution electrolyte having a chemical activity equivalent to less than an... | 12/20/1983 |
| 4420378 | Method for forming decorative colored streak patterns on the surface of an aluminum shaped article The invention provides a novel and improved method according to which the surface of a shaped article of aluminum or an aluminum-based alloy is provided with decorative streak patterns electrolytically engraved in the surface which can be subsequently col... | 12/13/1983 |
| 4406757 | Anodization method In the method of electrolytically treating a lithographic-grade aluminum web by liquid contact in a sulfuric acid electrolyte, the improvement which comprises carrying out said treatment in the presence of an iridium oxide plated titanium metal anode.... | 09/27/1983 |
| 4396470 | Lithographic printing plates Aluminium sheets for lithographic printing plate production are anodized firstly in a phosphoric acid electrolyte and secondly in an electrolyte containing a major amount of phosphoric acid and a minor amount of sulphuric acid.... | 08/02/1983 |
| 4356076 | Apparatus for the anodic oxidation of aluminum An apparatus for the anodic oxidation of aluminum permits the recovery of hydrogen generated from the cathode. The cathode is positioned within a tubular member provided with a multiplicity of small openings each having a size sufficient to allow passage ... | 10/26/1982 |
