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| Number | Title | Issue Date |
| 7125610 | Capacitor containing aluminum anode foil anodized in low water content glycerine-phosphate electrolyte without a pre-anodizing hydration step A capacitor comprising an aluminum anode and a dielectric layer comprising phosphate doped aluminum oxide and process for making the capacitor. The capacitor has a CV Product of at least 9 μF-V/cm2 at 250 volts. Furthermore, the capacitor is formed by th... | 10/24/2006 |
| 7097756 | Method for producing gold-colored surfaces pertaining to aluminum or aluminum alloys, by means of formulations containing silver salt The invention relates to a process for obtaining gold-colored aluminum oxide layers in which the coloring of the oxidized surface of the aluminum or aluminum alloys is carried out by an electrolytic process in an electrolyte comprising an alkanesulfonic acid and an ... | 08/29/2006 |
| 7090762 | Method of passing electric current through highly resistive anodic oxide films The metal oxide surface coating of an anodized valve metal may be made conductive under certain conditions so that conductive coatings can be electrolytically deposited on the surface of the oxide. When a dry polar aprotic electrolyte solution is used at a reduced t... | 08/15/2006 |
| 6916414 | Light metal anodization Using pulsed current and relatively low average voltages, articles containing light metals such as magnesium may be rapidly anodized to form protective surface coatings. The anodizing solutions employed may contain phosphate, permanganate, silicate, zirconate, vanad... | 07/12/2005 |
| 6875334 | Method of anodizing of magnesium and magnesium alloys and producing conductive layers on an anodized surface A method, a composition and a method for making the composition for anodizing metal surfaces, especially magnesium surfaces is disclosed. The composition is a basic aqueous solution including hydroxylamine, phosphate anions and nonionic surfactants. A complementary ... | 04/05/2005 |
| 6838297 | Nanostructure, electron emitting device, carbon nanotube device, and method of producing the same The invention provides a nanostructure including an anodized film including nanoholes. The anodized film is formed on a substrate having a surface including at least one material selected from the group consisting of semiconductors, noble metals, Mn, Fe, Co, Ni, Cu ... | 01/04/2005 |
| 6818118 | Anodically formed intrinsically conductive polymer-aluminum oxide composite as a coating on aluminum A method for forming a coating on aluminum by contacting the aluminum with water, at least one multifunctional polymeric organic acid, a monomer of an intrinsically conductive polymer and polymerizing the ICP monomer and forming aluminum oxide by imposing an electri... | 11/16/2004 |
| 6808615 | Surface mount aluminum capacitor having anode foil anodized in an aqueous phosphate solution Aluminum surface mount capacitors containing one or more anode foil coupons are initially anodized in an aqueous phosphate solution in order to produce an anodic oxide film having extreme resistance to hydration and attack by corrosive anions for the purpose of prod... | 10/26/2004 |
| 6652729 | Electrolyte for very high voltage electrolytic capacitors An electrolyte comprising a polyester condensation product of 2-methyl-1,3-propane diol and boric acid; and further comprising dimethyl amino ethoxy ethanol in an amount to reduce the resistance of the electrolyte. The electrolyte may further comprise ort... | 11/25/2003 |
| 6540900 | Method of anodizing aluminum capacitor foil for use in low voltage, surface mount capacitors Disclosed is a process for the continuous anodizing of aluminum foil for use in aluminum electrolytic capacitors. Specifically, etched anode foil is anodized to relatively low voltage in a two-step reel-to-reel process. The process is particularly useful ... | 04/01/2003 |
| 6524718 | Metallic object with a thin polyphase oxide coating and process for the manufacture thereof A metallic object, having a metallic substrate of a valve metal or a valve metal alloy inclusive of intermetallic phases, and a thin polyphase oxide coating, is disclosed. The polyphase oxide coating has a metal oxide phase and at least one other organic ... | 02/25/2003 |
| 6475368 | Method of aqueous anodizing aluminum substrates of solid capacitors A method of anodizing an aluminum substrate comprising heating the substrate to a first temperature of 200° C. to about 380° C.; suspending the substrate into a first electrolyte and applying a first anodizing current to the first electrolyte; rinsing t... | 11/05/2002 |
| 6436268 | Non-aqueous electrolytes for anodizing Non-aqueous electrolytic solutions suitable for anodizing valve metal derivative anodes, methods of anodizing using non-aqueous electrolytic solutions, and capacitors prepared with non-aqueous electrolytic solutions. The non-aqueous electrolytic solution ... | 08/20/2002 |
| 6409905 | Method of and electrolyte for anodizing aluminum substrates for solid capacitors A method of anodizing comprising suspending at least one aluminum substrate into an electrolyte solution and applying an anodizing current to the electrolyte solution, wherein the electrolyte solution comprises from about 5 to about 99.5 wt % glycerine, a... | 06/25/2002 |
| 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 |
| 6346185 | Method and electrolyte for anodizing valve metals to high voltage A method of anodizing valve metals with a borate polyester solution formed by the combining 2-methyl-1,3-propane diol and boric acid and heating to about 130 to about 160° C. The heating drives off water produced by esterification. A substrate is immerse... | 02/12/2002 |
| 6328874 | Anodically formed intrinsically conductive polymer-aluminum oxide composite as a coating on aluminum A method for forming a coating on aluminum by contacting the aluminum with water, at least one multifunctional polymeric organic acid, a monomer of an intrinsically conductive polymer (ICP) and polymerizing the ICP monomer and forming aluminum oxide by im... | 12/11/2001 |
| 6299752 | Very high volt oxide formation of aluminum for electrolytic capacitors An anode foil treatment method produces a useful high quality oxide with inherently high capacitance at voltages as high as 750 Volts or more. The anode foil treatment method comprises a series of formation and relaxation steps. Oxide layer formation is p... | 10/09/2001 |
| 6267861 | Method of anodizing valve metals A method of non-thickness-limited anodizing for valve metals and alloys which are resistant to the non-thickness-limited growth of anodic oxide, such as niobium and high niobium content alloys. Non-thickness-limited anodic oxide film growth is produced on... | 07/31/2001 |
| 6261434 | Differential anodization process for electrolytic capacitor anode bodies An electrolyte comprising water, an organic solvent selected from the group consisting of a polyethylene glycol, a polyethylene glycol monomethyl ether and mixtures thereof, and a sufficient amount of alkali metal salt of a weak organic acid, so that the ... | 07/17/2001 |
| 6242111 | Anodized aluminum susceptor for forming integrated circuit structures and method of making anodized aluminum susceptor Disclosed is a method of making an anodized aluminum susceptor capable of withstanding an elevated temperature of 590° C., or a temperature as high as 475° C. in the presence of an NF3 plasma, without peeling or cracking, which preferably com... | 06/05/2001 |
| 6235181 | Method of operating process for anodizing valve metals A method of anodizing a metal comprising immersing a metal substrate into an a glycerine-based electrolytic solution and applying a constant current to produce a uniform film. The electrolytic solution additionally comprises at least one acidic organic sa... | 05/22/2001 |
| 6231993 | Anodized tantalum pellet for an electrolytic capacitor An anodized pressed valve metal powder pellet is described. The anodized pellet is particularly useful as an anode in an electrolytic capacitor having an improved breakdown voltage. The anodized pellet is formed by periodically holding the pellet at a con... | 05/15/2001 |
| 6183618 | Process for treating impregnated electrolytic capacitor anodes A process for treating an impregnated electrolytic capacitor anode whereby the anode body is immersed in a liquid electrolytic solution and a voltage is applied to the anode body, whereby a current flows through and repairs flaw sites in the anode body. T... | 02/06/2001 |
| 6162345 | Method of anodizing a metal anode prepared from very fine metal powder Electrolytes containing water, at least one organic solvent, and at least one alkali metal phosphate salt can be used for anodizing valve metals prepared from metal powder having a surface area of least 0.35 m2 /g or 35,000 CV/g. The alkali met... | 12/19/2000 |
| 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 |
| 6036767 | Aqueous pigment dispersion composition for electro-deposition color coating The present invention provides an aqueous pigment dispersion composition for electro-deposition color coating of an aluminum or aluminum alloy oxide film, the composition comprising an organic white pigment as an essential component thereof. The organic w... | 03/14/2000 |
| 5980723 | Electrochemical deposition of a composite polymer metal oxide A process for forming polymer films through electrochemical techniques utilizing electrolytes which include conductive polymer. The resulting polymer films are electrically conductive and corrosion and wear resistant. Poyamino-benzene (polyaniline), for e... | 11/09/1999 |
| 5935408 | Electrolyte for anodizing valve metals An electrolytic solution comprising glycerine and dibasic potassium phosphate. The electrolytic solution has a water content of less than 1000 ppm and is prepared by mixing the glycerine and the dibasic potassium phosphate and then heating to about 150 to... | 08/10/1999 |
| 5837117 | Two-stage process for electrolytically polishing metal surfaces to obtain improved optical properties and resulting products A process for polishing a metal surface, typically based on Al, Mg, Ta, Ti, Zr, Hf or their alloys, comprises a first conventional polishing step by chemical or electrolytic means and a second electrolytic micro-polishing step by anodizing in a mineral, o... | 11/17/1998 |
| 5837121 | Method for anodizing valve metals An electrolytic solution comprising glycerine and dibasic potassium phosphate. The electrolytic solution has a water content of less than 1000 ppm and is prepared by mixing the glycerine and the dibasic potassium phosphate and then heating to about 150° ... | 11/17/1998 |
| 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 |
| 5779871 | Process of manufacturing aluminum surfaces for technical lighting purposes Reflector for technical lighting purposes, having a reflecting surface of aluminum and a protective, transparent, pore-free barrier layer of aluminum oxide produced by anodizing having a dielectric constant &3xb5; of 6 to 10.5 at 20° C., where the barrie... | 07/14/1998 |
| 5775892 | Process for anodizing aluminum materials and application members thereof According to the present invention, an aluminum alloy containing silicon is anodized using an electrolyte including a compound containing an anion having complexing capability such as sodium hydrogenphosphate or tribasic sodium phosphate, a salt of an org... | 07/07/1998 |
| 5716511 | Anodizing electrolyte and its use An anodizing electrolyte containing a polyethylene glycol dimethyl ether and an electrochemical process for anodizing valve metals which permits the formulation of an anodic layer having a substantially uniform thickness and reduced flaw density.... | 02/10/1998 |
| 5362569 | Anodizing and duplex protection of aluminum copper alloys Copper alloys of aluminum are afforded extended protection against surface corrosion by anodizing the aluminum surface to be protected, treating the surface with a heterocyclic aromatic azole treating agent having up to 16 carbon atoms before, during or a... | 11/08/1994 |
| 5277788 | Twice-anodized aluminum article having an organo-phosphorus monolayer and process for making the article A twice-anodized aluminum substrate is anodized sequentially in first and second aqueous electrolytes. In the first, the substrate is conventionally anodized to produce (i) a porous anodic oxide layer having open pores and a passivation layer thereunder. ... | 01/11/1994 |
| 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 |
| 5225069 | Process for the production of oxide ceramic surface films on silicon-containing light metal cast alloys A process for the production of white and black oxide ceramic surface films on silicon-containing light metal cast alloys by plasma-chemical anodic oxidation. An aluminum cast alloy is pickled with nitric acid and hydrofluoric acid and coated by plasma-ch... | 07/06/1993 |
