| Patents for C23C 22 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (14,001) |
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| 10/25/1988 | CA1243562A1 Heat resistant precoated steel sheet and process for the production thereof |
| 10/25/1988 | CA1243561A1 Anti-corrosion treatment process for iron materials |
| 10/19/1988 | EP0287133A1 Phosphating treatment before electrophoretic dip painting |
| 10/19/1988 | CN87102287A Cleaning liquid for metal surface and its method of preparation |
| 10/18/1988 | US4778655 Corrosion inhibition by adding soluble zinc salt, chelating agent, compound having both a phosphorous and a carboxyl group |
| 10/18/1988 | CA1243268A1 Process for producing cold rolled steel strip highly susceptible to conversion treatment |
| 10/11/1988 | US4777091 Metal substrates treated with aminophosphonic acid compounds and products resulting from coating such substrates |
| 10/11/1988 | US4776898 Passivation |
| 10/05/1988 | EP0285593A1 Method for increasing the corrosion resistance of a quenched and self-tempered reinforcement bar made of steel |
| 10/05/1988 | EP0285535A1 Chemical surface treatment process of aluminum products before phosphating |
| 10/05/1988 | EP0285460A2 Precoated metal plate for heavy forming use |
| 10/05/1988 | EP0285266A2 Metal treatment |
| 10/04/1988 | US4775600 Highly corrosion-resistant surface-treated steel plate |
| 10/04/1988 | US4775444 Applying chromic acid solution to copper circuit pattern coated with adhesion promoter |
| 10/04/1988 | US4775427 Mixture of molybdate, chromium, fluorine, phosphate, zinc, and acetate compounds |
| 09/28/1988 | CN88100695A Chromium-containing low-cure coating composition |
| 09/27/1988 | US4774145 Oxidation resistance for iron alloys |
| 09/14/1988 | EP0282073A1 Highly corrosion-resistant, multi-layer coated steel sheets |
| 09/13/1988 | US4770943 Method of forming rigid film of calcium phosphate compound |
| 09/13/1988 | US4770808 P-hydroxybenzoic acid and triphenylcarbinol |
| 09/13/1988 | US4770727 Protective coating |
| 09/13/1988 | US4770717 Compositions and process for metal treatment |
| 09/07/1988 | WO1988006639A1 A method of forming a corrosion resistant coating |
| 09/07/1988 | WO1988006521A1 Highly corrosion-resistant, surface-treated steel sheet |
| 09/07/1988 | EP0281176A1 Lacquering pretreatment process for aluminium or aluminium alloy work pieces |
| 09/06/1988 | CA1241507A1 Barium or chromium additives to magnesium oxide coating slurry |
| 08/25/1988 | WO1988005474A3 Method for preparing reactive metal surface |
| 08/23/1988 | US4765870 Hydration of an aluminum substrate followed by passivation with solium dihydrogen phosphate solution; tempering |
| 08/23/1988 | CA1240905A1 Process for phosphating electrolytically zinc-coated metals |
| 08/17/1988 | EP0278283A1 Chromium-containing low-cure coating composition |
| 08/17/1988 | EP0215041B1 Process for the phosphating of metal surfaces |
| 08/16/1988 | US4763729 Oxy-salts of group iv b or v refractory metals improve protective coatings; oil wells |
| 08/16/1988 | CA1240454A1 Surface treatment of aluminum and its alloys |
| 08/10/1988 | EP0277243A1 Process for forming insulating film on electrical sheet |
| 08/09/1988 | US4762572 Process for phosphating electrolytically zinc-coated metals |
| 08/09/1988 | CA1240307A1 Corrosion resistant lubricant coating composite |
| 08/03/1988 | EP0276371A1 Process for treating metal surface |
| 08/03/1988 | CN88100060A High efficient rust-removing passivator |
| 08/02/1988 | US4761189 Process and aqueous compositions for treating metal surfaces |
| 08/02/1988 | US4760878 Process for producing heat pipe |
| 08/02/1988 | CA1239759A1 Liquid coating composition for producing high quality, high performance fluorine-doped tin oxide coating |
| 07/28/1988 | WO1988005474A2 Method for preparing reactive metal surface |
| 07/28/1988 | WO1988005473A1 Metal surface coating |
| 07/27/1988 | EP0276063A1 Metal-chelating diphenolamine oligomers for corrosion inhibition of metal substrates |
| 07/26/1988 | US4759949 Method of insulating ferromagnetic amorphous metal continuous strip |
| 07/20/1988 | EP0274543A1 Composition for treating metal surface and treating process |
| 07/14/1988 | WO1988005088A1 Method for treating a steel surface in order to obtain a coloured coating |
| 07/13/1988 | EP0274284A1 Steel surface treating process for forming a coloured coating |
| 07/12/1988 | CA1239208A1 Metal treating process control |
| 07/06/1988 | EP0273698A2 Processes and products for surface treatment |
| 07/06/1988 | EP0273408A2 Process for producing coatings on metal surfaces |
| 07/05/1988 | US4755224 Cleaning surface with nonionic surfactant, contacting with aqueous alkali metal permanganate solution to form conversion coating, removing excess |
| 06/29/1988 | EP0272867A2 Method for improving magnesium oxide steel coatings |
| 06/29/1988 | CN86108470A Chemical oxidization method for high silicon-aluminium alloy without hydrofluoric acid and pretreatment |
| 06/28/1988 | US4753687 Easy removal of excess from silicon steels after high temperature annealing |
| 06/28/1988 | CA1238602A1 Passivation of zinc on steel with chromic anhydride prior to chrome plating |
| 06/22/1988 | CN86107993A Technology for improving surface wettability |
| 06/15/1988 | EP0271069A2 Process for the phosphate chemical conversion treatment of a steel material |
| 06/15/1988 | EP0270836A1 Wire drawing process |
| 06/14/1988 | US4750949 Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| 06/07/1988 | US4749418 Chromic acid; phosphoric acid and fluorozirconates |
| 06/07/1988 | US4749417 Aftertreating phosphate conversion coating with cobalt, nickel and stannous ion solution |
| 06/01/1988 | EP0269138A1 Process for producing phosphate coatings on metals |
| 05/31/1988 | US4747885 Solution and process for coating metals |
| 05/31/1988 | CA1237346A1 Method of preparing composite aluminum material |
| 05/25/1988 | EP0268547A1 Method for enveloping steel objects with plastics |
| 05/25/1988 | EP0268361A1 Solution, composition and process of refining metal surfaces |
| 05/24/1988 | CA1236952A1 Phosphate conversion coating accelerators |
| 05/19/1988 | DE3637716A1 Method of zinc plating all types of steel parts |
| 05/17/1988 | CA1236655A1 Non-peroxide trivalent chromium passivate composition and process |
| 04/27/1988 | EP0264811A1 Process for producing phosphate coatings |
| 04/27/1988 | EP0264472A1 Aqueous composition for the passivation of zinc and cadmium surfaces |
| 04/27/1988 | EP0264471A1 Coating applicable to hot metal surfaces |
| 04/26/1988 | US4740389 Composition and method for producing layers with a high specific surface on iron aluminum, zinc, and technical alloys |
| 04/26/1988 | US4740251 Calcining magnesium hydroxide with barium, chromium salts, silica; slurrying, annealing |
| 04/26/1988 | CA1235632A1 Modifications of the properties of metals |
| 04/21/1988 | DE3635411A1 Oxygen enrichment of drinking water |
| 04/20/1988 | EP0264338A2 Porous coatings, products and method of manufacture |
| 04/20/1988 | EP0264151A1 Process for obtaining phosphate coatings |
| 04/19/1988 | US4738879 Rotatable cylindrical application in elongated trough |
| 04/13/1988 | EP0263347A1 Method of manufacturing a dark surgical needle |
| 04/06/1988 | EP0262541A1 Protective compositions with iron oxide conversion action |
| 04/05/1988 | CA1234730A1 Piston engine having a phosphatized cylinder wall |
| 03/30/1988 | EP0261704A1 Process for producing phosphate coatings on metal surfaces |
| 03/30/1988 | EP0261597A2 Method of applying a zinc-nickel phosphate coating |
| 03/30/1988 | EP0261519A1 Passivation by coating for materials containing different metals |
| 03/30/1988 | EP0261238A1 Protective coating for metals |
| 03/16/1988 | EP0259975A1 Method for forming ferrite film |
| 03/15/1988 | US4731261 Method for coating a metal covered with metal oxide film with refractory metal oxide |
| 03/15/1988 | CA1233956A1 Thick coating compositions of uni- and polymodal types |
| 03/09/1988 | EP0258922A1 Process for producing phosphate coatings and their use |
| 03/09/1988 | CN87100849A Acidic chromium containing coating solution for zinc or cadmium surfaces |
| 03/08/1988 | US4729770 Processes and compositions for abrasive blast cleaning |
| 03/08/1988 | CA1233733A1 Solution and process for the chemical conversion of metal substrates |
| 03/02/1988 | EP0258202A1 Room temperature blackening solution and method for forming a black coating on a ferrous metal substrate |
| 03/02/1988 | EP0257667A1 Brass-coated steel elements having improved rubber adhesion properties |
| 03/02/1988 | CN87104237A Aqueous oil-rust removing solution |
| 03/01/1988 | US4728462 Metal chromate coating |
| 03/01/1988 | US4728401 Chromating |
| 03/01/1988 | US4728373 Solution and process for cold forming titanium |