| Patents for C25D 11 - Electrolytic coating by surface reaction, i.e. forming conversion layers (8,800) |
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| 01/29/1991 | US4988414 Hermetic sealing, membranes, vacuum, conductive screens, insulators |
| 01/23/1991 | EP0409785A1 Electrolyte for obtaining black conversion layers in light molds |
| 01/16/1991 | EP0408326A1 Method for manufacturing a composite oxide thin film |
| 01/09/1991 | EP0406620A1 Process for coloring titanium and its alloys |
| 01/09/1991 | EP0406579A2 Electroplated steel sheet having a plurality of coatings, excellent in workability, corrosion resistance and water-resistant paint adhesivity |
| 01/08/1991 | US4983497 Treated anodized aluminum support and lithographic printing plate containing same |
| 01/08/1991 | US4983262 Depositing black nickel |
| 01/08/1991 | CA1278765C Applying nickel coating to substrate and electrodeposition chromium alloy over the nickel coating |
| 01/02/1991 | EP0405942A1 Web barrier packaging material |
| 01/02/1991 | EP0405624A2 Method for anodizing aluminium |
| 12/27/1990 | EP0382712A4 Method of coating articles of aluminum and an electrolytic bath therefor |
| 12/19/1990 | EP0400057A4 Preparation of superconducting oxides by electrochemical oxidation: anodic superconductors |
| 12/18/1990 | US4978432 Anodic oxidation with borate, sulfate, phosphate, chloride and fluoride anoins-low alkali bath |
| 12/12/1990 | EP0402287A1 Apparatus for anodising aluminium alloy pistons used in internal combustion engines |
| 12/11/1990 | US4976830 Method of preparing the surfaces of magnesium and magnesium alloys |
| 12/11/1990 | US4976829 Forming tin oxide layer, reacting with polyacrylic acid |
| 12/11/1990 | US4976827 Process for pretreating strips and foils of aluminum or aluminum alloys |
| 12/07/1990 | CA2018288A1 Anodization process of aluminum alloy pistons for internal combustion engines |
| 12/05/1990 | EP0400057A1 Preparation of superconducting oxides by electrochemical oxidation: anodic superconductors |
| 11/28/1990 | EP0399172A2 Process for obtaining coloured surfaces on pieces of aluminium or pieces of aluminium alloys |
| 11/28/1990 | EP0399171A1 Process for the manufacture of coloured surfaces on parts made of aluminium or an aluminium alloy and also parts made of aluminium or an aluminium alloy |
| 11/28/1990 | EP0399170A2 Polishing process |
| 11/28/1990 | EP0399169A2 Chemical process to avoid a rainbow effect, provoked by an oxide layer that is caused during the polishing of pieces of aluminium or pieces of aluminium alloys |
| 11/28/1990 | EP0399168A1 Process for densifying an anodically obtained oxide layer on aluminium or aluminium alloy parts |
| 11/28/1990 | EP0362240A4 Controlling processes for the electrolytic recovery of metals |
| 11/28/1990 | CN1010556B Method for shaping anodic aluminium oxide sheet |
| 11/17/1990 | WO1990014449A1 Method of surface treatment of aluminum or its alloy |
| 11/17/1990 | CA2028107A1 Process for surface treatment of aluminum or aluminum alloy |
| 11/14/1990 | EP0397216A1 Composite membrane |
| 11/14/1990 | EP0397114A1 Preventing crevice corrosion of titanium surfaces |
| 11/14/1990 | CN1010380B Composite membrane |
| 11/13/1990 | US4969850 Method of manufacturing a cold cathode, field emission device and a field emission device manufactured by the method |
| 11/13/1990 | CA1276054C Low temperature seal for anodized aluminum surfaces |
| 11/06/1990 | US4968391 Process for the preparation of a black surface-treated steel sheet |
| 11/06/1990 | US4968389 Method of forming a composite film over the surface of aluminum materials |
| 10/31/1990 | EP0395544A1 Insulated metallic substrates and method of making these substrates |
| 10/30/1990 | US4967116 Spark plug having heat- and corrosion-resistant surface |
| 10/24/1990 | EP0393520A1 Process for the uniform introduction of a fluid and device for carrying out this process |
| 10/24/1990 | CA2015118A1 Isolated metallic substrates and manufacturing method |
| 10/23/1990 | CA1275372C Method and composition for preserving aluminum surfaces |
| 10/21/1990 | CA2015007A1 Process for the uniform introduction of a fluid, and apparatus for carrying out the process |
| 10/17/1990 | CN1010035B Tin-free steel strips useful in the mfr. of welded cans and process for making |
| 10/10/1990 | EP0391578A1 Two phase metal/oxide films |
| 10/09/1990 | US4961829 Passivation of semiconductor surfaces |
| 10/03/1990 | EP0390348A2 Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating |
| 09/26/1990 | EP0389274A2 Optical interference structures incorporating porous films |
| 09/19/1990 | EP0388362A1 Process for producing a structured surface on an object made of aluminium or an aluminium alloy |
| 09/11/1990 | US4955353 Piston for internal combustion engine |
| 09/05/1990 | CN1009433B Anode aluminium oxide diaphragm and process for manufacturing same and its application |
| 09/04/1990 | CA1273600A1 Surface-treated steel strip having improved weldability and process for making |
| 08/30/1990 | DE4005089A1 Black conversion coating compsn. - for nickel deposits contains chromate and nitrate ions |
| 08/23/1990 | DE3904661A1 Method for producing an oxide-containing layer |
| 08/22/1990 | EP0383729A1 A system for fixing anodized aluminium |
| 08/22/1990 | EP0382712A1 Method of coating articles of aluminum and an electrolytic bath therefor |
| 08/15/1990 | WO1990009670A1 Insulated electric wire |
| 08/15/1990 | CN1044681A Manufacturing method of multicolor and multi-character natural pattern on aluminium surface |
| 08/08/1990 | EP0381512A2 Bilayer oxide film and process for producing same |
| 08/08/1990 | EP0381511A1 Colour change devices incorporating thin anodic films |
| 08/08/1990 | EP0381510A2 Process for coating a packaging film with a transparent barrier coating |
| 08/08/1990 | EP0381509A1 A process for producing released vapour deposited films |
| 08/01/1990 | EP0380073A2 Layered material |
| 07/31/1990 | US4945004 Base material for an aluminum offset printing plate |
| 07/31/1990 | CA1272159A1 Chrome electro plating tin-free steel with intervening anodic treatment |
| 07/27/1990 | CA2008550A1 Composite structure |
| 07/24/1990 | CA1271958A1 Treating aluminum oxide layer with aqueous hexametaphosphate solution for producing printing plate support |
| 07/12/1990 | WO1990007589A1 Process for impregnating anodized aluminium surfaces |
| 07/12/1990 | DE3900169A1 Verfahren zum impraegnieren anodisch erzeugter oberflaechen von aluminium A method of impregnating anodic surfaces of aluminum |
| 07/03/1990 | US4939316 Aluminum alloy semiconductor packages |
| 07/03/1990 | US4939068 Anodic oxidation of the surface of aluminum or aluminum alloys |
| 07/03/1990 | US4939044 Iron, silicon |
| 07/03/1990 | US4939001 Process for sealing anodized aluminum |
| 07/03/1990 | US4938870 Overlaying uniform microporous film; free of cracks and pinholes; filters |
| 06/28/1990 | DE3842600A1 Process for anodic oxidation and subsequent colouring |
| 06/26/1990 | US4936957 Soft porous anodization followed by transformation to hard barrier |
| 06/21/1990 | DE3915620C1 Multi-colouring of extruded aluminium (alloy) articles - comprises anodic oxidn. then selectively exposing areas to electromagnetic radiation before colouring by electrolytic treatment |
| 06/20/1990 | EP0374100A1 Anodized surface of an object having luminescent properties, and process for its production |
| 06/19/1990 | US4935203 Corrosion resistant aluminum alloy |
| 06/19/1990 | US4935111 Zinc-nickel alloy plated, electrolysis of nitrate solution containing an inhibitor, complexing agent and a hydroxide, sulfate or chloride |
| 06/16/1990 | CA2005560A1 Anodised surface of an object with luminescence properties and process for producing the surface |
| 06/06/1990 | EP0215950B1 Process for forming composite aluminum film |
| 06/05/1990 | US4931151 Method for two step electrolytic coloring of anodized aluminum |
| 06/05/1990 | CA1269898A1 Process for production of calcium phosphate compound- coated composite material |
| 05/23/1990 | DE3838829A1 Anodically oxidised and electrolytically coloured casting of a titanium-containing AlMg casting alloy |
| 05/22/1990 | US4927472 Conversion coating solution for treating metal surfaces |
| 05/16/1990 | EP0368470A1 Methods for depositing finish coatings on substrates of anodisable metals and the products thereof |
| 05/16/1990 | EP0367809A1 Flow divider. |
| 05/16/1990 | CN1042089A Treating porous anodic aluminium oxide membrane |
| 05/09/1990 | CN1007916B Passivation of copper and copper-alloy surfaces |
| 05/08/1990 | CA1268729A1 Anodic aluminium oxide film and method of forming it |
| 05/08/1990 | CA1268604A1 Colorless sealing layers for anodized aluminum surfaces |
| 05/02/1990 | CN1041708A Porous anodic aluminium oxide membranes |
| 05/01/1990 | CA1268445A1 Coloured anodised finishes |
| 04/25/1990 | EP0364596A1 METHODS FOR PRODUCING Zn-Ni ALLOY-PLATED STEEL SHEET HAVING EXCELLENT PRESS MOLDABILITY |
| 04/24/1990 | US4919774 Controlling current ratio in electrolytic current by using auxiliary electrode; surface roughening metal web |
| 04/19/1990 | WO1990004262A1 Aluminum alloy semiconductor packages |
| 04/18/1990 | EP0363536A1 Treatment of condenser tubes |
| 04/17/1990 | US4917780 Aqueous elctrolyte containing toluenesulfonic acid |
| 04/17/1990 | US4917779 Electrolysis, forming anodic oxide film on zinc substrate, dipping in plastic dispersion |
| 04/11/1990 | EP0363138A1 Treating porous anodic aluminium oxide membrane |
| 04/11/1990 | EP0363123A1 Porous anodic aluminium oxide membranes |