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| Number | Title | Issue Date |
| 4152222 | Electrolytic coloring of anodized aluminium by means of optical interference effects Anodized aluminium having an anodic oxide film of at least 3 microns thickness is colored by electrolytically depositing inorganic pigment from metallic salt solutions, particularly nickel, cobalt, tin and copper salts and mixtures. The pigment deposits a... | 05/01/1979 |
| 4135990 | Surface treatment of the anodes for tantalum capacitors The anodization of sintered anodes for tantalum capacitors is carried out in two successive steps separated by a cleaning step in an acid bath. In a preferred variant of the process both the first anodization and the cleaning are performed on batches of a... | 01/23/1979 |
| 4132608 | Technique for electrodeposition of water-based polymeric coating A water-based polymeric coating comprising a novolak resin is deposited electrolytically from a solution of a novolak resin upon a conductive substrate at an initial current density ranging from 10-30 milliamperes per square centimeter. The resultant coat... | 01/02/1979 |
| 4130466 | Antifouling coating for aluminum structures Aluminum objects which are designed to be submersed, submerged, or buried e rendered antifouling by anodizing the surface of the aluminum and impregnating therein, for example, an organometallic compound containing tin. Long term antifouling is achieved d... | 12/19/1978 |
| 4116730 | Silicon-iron production and composition and process therefor A boron-containing magnesium hydroxide coating is electrolytically applied to a boron-containing electrical steel through the use of an electrolyte at 90° C which is an aqueous solution of magnesium acetate and magnesium metaborate containing magnesia as... | 09/26/1978 |
| 4113579 | Process for producing an aluminum electrolytic capacitor having a stable oxide film An electrolytic capacitor is provided with an electrode having a stable aluminum oxide dielectric by anodizing an aluminum foil in a process that includes depolarizing the foil in a bath containing a hydration inhibitor selected from tartrate or citrate o... | 09/12/1978 |
| 4113580 | Steel sheet useful in forming foodstuff and beverage cans A steel sheet which has been treated to form thereon a first layer of an iron-tin alloy and a second layer of hydrated chromium oxide. This treated steel sheet can be effectively coated with an organic coating, and is useful in forming cans for foodstuffs... | 09/12/1978 |
| 4111762 | Optically black coating and process for forming it A product capable of extremely high absorption of electromagnetic radiation, including visible light, useful in optical applications and as a decorative panel comprises a body made of anodizable metal, preferably aluminum having a roughened surface over w... | 09/05/1978 |
| 4096001 | Boron-containing electrical steel having a calcium borate coating and magnesia overcoating, and process therefor A relatively thin coat of calcium metaborate is electrolytically-applied directly to the surface of a boron-containing electrical steel and a substantially thicker overcoat of Mg(OH)2 is electrolytically-deposited on the calcium metaborate coat... | 06/20/1978 |
| 4022671 | Electrolytic coloring of anodized aluminum In the process of electrocoloring aluminum by passage of alternating current between anodized aluminum and a counter-electrode while immersed in a bath containing a salt of one or more of the group nickel, cobalt, tin, the range of colors obtainable by th... | 05/10/1977 |
| 3982314 | Method of producing tin coated steel sheet used for seamless steel container Tin coated steel sheet used for seamless steel containers by applying of a coating at least one material selected from the group consisting of nickel, cobalt, copper, nickel oxide, cobalt oxide, copper oxide, tin oxide, copper-tin compound, cobalt-copper ... | 09/28/1976 |
| 3959014 | Method to produce a protective oxide on the surface of positive nickel electrodes for galvanic cells The present invention relates to a method for the development of a protective oxide on the surface of porous, positive Mi-electrodes for galvanic cells with alkaline electrolyte.... | 05/25/1976 |
| 3930964 | Method for painting aluminum or aluminum-based alloy material A strong base layer for painting on an aluminous material, a thermosetting resin paint and a painted film having high cohesion and corrosion resistance are produced by forming a boehmite layer in various processes on the aluminous material and immersing t... | 01/06/1976 |
