| 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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| 03/13/1990 | US4908261 Non-ferrous metal mechanical part |
| 03/13/1990 | US4908075 Surface treatment chemical for forming a hydrophilic coating |
| 03/07/1990 | EP0357219A1 Aluminium and aluminium alloy having corrosion-resistant protective layer, and methods of making such a layer |
| 03/07/1990 | EP0356855A2 Pretreatment of aluminium or aluminium alloy surfaces to be coated with organic materials without using chromium |
| 03/07/1990 | EP0356756A1 Process for producing black coatings on zinc or zinc alloys |
| 03/06/1990 | US4906327 Method and composition for refinement of metal surfaces |
| 03/06/1990 | US4905695 Sterile surgical needle having dark non-reflective surface |
| 03/06/1990 | CA1266419A1 Thixotropic alumina coating compositions and methods |
| 02/28/1990 | EP0355525A1 Process for producing coatings on zinc |
| 02/28/1990 | EP0355272A1 Steel sheet multiple coatings for use in the external parts of motor vehicle body-works |
| 02/27/1990 | US4904501 Prevention of high temperature exfoliation |
| 02/26/1990 | EP0347420A4 A method of forming a corrosion resistant coating. |
| 02/21/1990 | CN1006906B High temp. manganese-parkerizing process in mechanical component |
| 02/20/1990 | US4902551 Process for treating copper surface |
| 02/14/1990 | CN1039626A Chemical oxidation process of aluminium and its alloy |
| 02/08/1990 | WO1990001075A1 Surface treatment of metals |
| 02/07/1990 | EP0353957A1 Surface treatment of metals |
| 02/06/1990 | CA1265392A1 Zinc shot-blasting steel |
| 01/31/1990 | EP0352808A2 Multi-layered steel sheets |
| 01/30/1990 | US4897129 Phosphating, then treating with nickel acetate solution |
| 01/30/1990 | US4897128 Process of determining the zinc content of phosphating baths |
| 01/30/1990 | CA1264928A1 Spherical aluminum particles in coatings |
| 01/24/1990 | EP0351771A1 Non-chrome cleaner/deoxidizer system |
| 01/23/1990 | US4895608 Protective coating, aluminum nitrate, phosphoric acid |
| 01/23/1990 | CA1264636A1 Sterile surgical needle having dark non-reflective surface |
| 01/23/1990 | CA1264538A1 Composition and process for treatment of ferrous substrates |
| 01/08/1990 | EP0331684A4 Process for fabricating multilayer circuit boards. |
| 01/04/1990 | DE3822018A1 Process and equipment for phosphating metallic workpieces |
| 01/03/1990 | EP0349410A1 Process for applying a self-lubricating coating based on PTFE on a part of a rolling bearing and rolling bearings obtained |
| 01/03/1990 | EP0348890A1 A method of producing highly corrosion-resistant surface-treated steel sheets |
| 01/03/1990 | EP0348630A1 Process for applying corrosion-resistant coatings to aluminium alloys and products obtained |
| 01/03/1990 | CN1038470A Surface treatment agent for iron and steel-a novel inhibitor and derusting |
| 01/02/1990 | US4891268 Hexavalent chromium, particulate metal, lubricant |
| 01/02/1990 | US4890633 Treating apparatus equipped with a swing mechanism |
| 12/27/1989 | EP0347420A1 A method of forming a corrosion resistant coating |
| 12/27/1989 | CN1038310A Process of micro-chromium passivation free from nitrate radical and sulfate redical |
| 12/26/1989 | US4889775 Highly corrosion-resistant surface-treated steel plate |
| 12/26/1989 | US4889718 Polyacid macromolecule primers |
| 12/26/1989 | US4889558 Coating compositions containing undissolved hexavalent chromium salt |
| 12/20/1989 | EP0346827A1 Process and composition for producing protective and colour-receptive coatings on aluminium |
| 12/13/1989 | EP0345937A1 Method of refining magnetic domains of electrical steels |
| 12/13/1989 | EP0345936A1 Method of refining magnetic domains of electrical steels |
| 12/12/1989 | US4886590 Chemical process control system |
| 12/05/1989 | US4885032 Phosphate coating gives brightness and corrosion resistance |
| 11/28/1989 | US4883722 Steel cord reinforced rubber tires |
| 11/21/1989 | US4882215 Wear and corrosion resistance |
| 11/21/1989 | US4882196 Process for the production of a titanium composite materials coated with calcium phosphate compound |
| 11/21/1989 | US4881975 Products for treating surfaces |
| 11/14/1989 | US4880478 Protective coating for steel surfaces and method of application |
| 11/14/1989 | US4880476 Process for the phosphate chemical conversion treatment of a steel material |
| 11/09/1989 | DE3814391A1 Activation of metal surfaces before zinc-phosphating |
| 11/08/1989 | EP0340530A1 Titanium-free activating agents, process for preparing them and their use in activating a metal surface before zinc phosphating |
| 11/08/1989 | EP0340529A1 Hard water stabilizing additive for activating agents before zinc phosphating |
| 11/07/1989 | US4878963 Corrosion resistant aluminum coating composition |
| 11/02/1989 | EP0339452A2 Polymer titanium phosphates, process for their preparaton and their use in the activation of metal surfaces before zinc phosphating |
| 10/26/1989 | DE3906187C1 Titanium alloy component with a protective layer and process for its production |
| 10/19/1989 | WO1989009844A1 Hot-dip zinc-aluminum alloy coated steel sheet for prepainted steel sheet, process for producing the same and prepainted steel sheet |
| 10/18/1989 | EP0337411A2 Process for preparing an acidic passivating bath for zinc, zinc alloys an cadmium surfaces, containing chromium III and fluoride |
| 10/18/1989 | EP0337075A2 Surface treatment composition and surface treatment bath for aluminium and aluminium alloys |
| 10/11/1989 | CN1005420B Stainless steel coating with double color by single coloration |
| 10/03/1989 | US4871708 Pyrophorically activated iron or nickel foil and method of treating same |
| 10/03/1989 | CA1262197A1 Thixotropic phosphate coating compositions and methods |
| 09/28/1989 | DE3835393A1 Process for the chemical treatment of metal components |
| 09/27/1989 | EP0334492A1 Process for treating metal surfaces |
| 09/26/1989 | CA1261716A1 Passivation of lead surfaces |
| 09/26/1989 | CA1260809A1 Method of zinc phosphatization, activation and refining bath used in said method and corresponding concentrate |
| 09/21/1989 | WO1989008730A1 PROCESS FOR PRODUCING Zn-Ni ALLOY-PLATED STEEL SHEET HAVING EXCELLENT PRESS MOLDABILITY |
| 09/20/1989 | CN1035683A Repair liquid for defect of blue annealed layer |
| 09/19/1989 | US4867853 Rinsing bath containing alkali borate, alkali silicane and alkali nitrite |
| 09/19/1989 | CA1259549A1 Process for the treatment by chemical conversion of substrates of zinc or of one of its alloys, concentrate and bath used for performing this process |
| 09/19/1989 | CA1259532A1 Organic coated steel strip having improved bake hardenability and method for making |
| 09/13/1989 | EP0331684A1 Process for fabricating multilayer circuit boards |
| 09/12/1989 | US4865653 Metal surface treatment with hydroxylamine to produce nodular and/or columnar morphology crystal structure coatings |
| 09/06/1989 | EP0331284A1 A process for the treatment of a metal oxdie layer, a process for bonding a metal object comprising a metal oxide layer and structure produced therefrom |
| 09/05/1989 | US4863516 Phosphate and chromate coatings, powder metal coatings |
| 09/05/1989 | US4863513 Iron-base anti-wear sintered alloy member |
| 08/23/1989 | EP0328908A1 Process for applying conversion coatings |
| 08/22/1989 | US4859287 Method for producing colored stainless steel stock |
| 08/17/1989 | DE3902266A1 Process for applying conversion coatings |
| 08/09/1989 | EP0327153A2 Process for applying phosphate coatings to metals |
| 08/01/1989 | US4853295 Chemical conversion layer superimposed between metal layers |
| 08/01/1989 | US4853285 Multilayer-chromium coating in binder, then paint |
| 08/01/1989 | US4853284 Mechanical part |
| 07/19/1989 | EP0324395A1 Process for phosphatizing metal surfaces |
| 07/19/1989 | EP0324394A2 Process and agent for simultaneous vibratory grinding, cleaning and passivation of metallic workpieces |
| 07/18/1989 | US4849031 Process of producing phosphate coatings on metal surfaces |
| 07/18/1989 | CA1257527A1 Cold deformation process employing improved lubrication coating |
| 07/11/1989 | US4846898 Method of rendering aluminum base metal resistant to water staining |
| 07/11/1989 | US4846897 Process and composition for treatment of titanium and titanium alloys |
| 07/11/1989 | CA1257182A1 Process for treating metal surface |
| 07/05/1989 | EP0322984A2 Coating type, chromate conversion coating composition |
| 07/04/1989 | US4845139 Masked metal diffusion |
| 07/04/1989 | US4844981 Adhesion promoter for printed circuits |
| 07/04/1989 | US4844753 Method for forming insulating films on electromagnetic steel plates |
| 07/04/1989 | US4844749 Oxidizer and abrasive |
| 07/04/1989 | US4844748 Process for the chemical surface treatment of an aluminous product with a view to its phosphating |
| 06/27/1989 | CA1256336A1 Coated aluminum zinc alloy plated sheet steel |
| 06/21/1989 | EP0321067A1 Process for treating copper surface |
| 06/21/1989 | EP0321059A1 Process for phosphating metal surfaces |
| 06/21/1989 | EP0320798A1 Process for desludging of phosphatizing baths and apparatus for this process |