| 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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| 09/25/1990 | US4959068 Sterile surgical needle having dark non-reflective surface |
| 09/20/1990 | WO1990010731A1 Method for improving the adhesion of a plastic encapsulant to copper containing leadframes |
| 09/19/1990 | EP0387998A1 Masking member |
| 09/18/1990 | US4957568 Composition and process for activating metal surfaces prior to zinc phosphating and process for making said composition |
| 09/18/1990 | US4957159 Aluminum heat exchanger provided with fins having hydrophilic coating |
| 09/18/1990 | CA1274156A1 Chromate coating of zinc surfaces |
| 09/17/1990 | CA2012413A1 Surface preparation for aluminium |
| 09/12/1990 | EP0386486A1 Titanium alloy component with a protection layer |
| 09/12/1990 | EP0386032A1 Method and apparatus for depositing an inorganic phosphate coating |
| 09/11/1990 | US4956035 Composition and process for promoting adhesion on metal surfaces |
| 09/11/1990 | US4956027 Dissolving resistant protective coatings, coating with chromium solution, treatment with hydrazine |
| 09/11/1990 | US4956025 Coiling, crystallization |
| 09/07/1990 | WO1990010094A1 Process for producing zinc/barium phosphate coatings on metal surfaces |
| 09/06/1990 | DE3906450A1 Backing plate for brake linings |
| 09/05/1990 | EP0385806A1 Phosphate coatings for metal surfaces |
| 09/05/1990 | EP0385362A1 Steel plate with organic coating having improved corrosion resistance |
| 09/05/1990 | EP0385251A1 Zinc-barium phosphating of metal surfaces |
| 09/04/1990 | CA1273626A1 Process for producing heat pipe |
| 08/30/1990 | DE4005089A1 Black conversion coating compsn. - for nickel deposits contains chromate and nitrate ions |
| 08/29/1990 | EP0384619A1 Masking member |
| 08/29/1990 | EP0384618A1 Masking member |
| 08/28/1990 | US4952320 Chromium recovery process |
| 08/28/1990 | US4952285 Using mixture of chromic and sulfuric acid |
| 08/21/1990 | US4950339 Process of forming phosphate coatings on metals |
| 08/15/1990 | CA2009536A1 Masking member |
| 08/10/1990 | CA2009535A1 Masking member |
| 08/10/1990 | CA2009534A1 Masking member |
| 08/09/1990 | WO1990009034A2 Surface treatment for thin metal or semiconductor oxide coatings |
| 08/08/1990 | EP0381190A1 Phosphate treatment solution for composite structures and method for treatment |
| 08/07/1990 | US4946748 Highly anticorrosive coated steel sheet for fuel vessel and process for production thereof |
| 08/07/1990 | US4946518 Oxidation of copper-cleaning of nickel |
| 08/01/1990 | EP0380067A1 Improved method of lubricating iron and steel before cold working |
| 08/01/1990 | CN1009012B Processing method for metal surface |
| 07/31/1990 | US4945017 Reducing agent, monomer or oligomer, free radical catalyst, in situ polymerization |
| 07/31/1990 | US4944813 Process for phosphating metal surfaces |
| 07/31/1990 | US4944812 Tannin mannich adducts for improving corrosion resistance of metals |
| 07/26/1990 | WO1990008347A1 Surface treatment for thin metal or semiconductor oxide coatings |
| 07/26/1990 | CA2008551A1 Improved method of lubricating iron and steel before cold working |
| 07/25/1990 | CN1008916B Anticorrosion coating composition with improved stability, and coated substrate |
| 07/24/1990 | US4943453 Method and coloration of parts taken among parts made of zinc, coated with zinc and made of zinc containing alloy |
| 07/18/1990 | CN1043962A Passivating liquid and its manufacturing method |
| 07/17/1990 | US4941930 Phosphate coating composition and method of applying a zinc-nickel phosphate coating |
| 07/11/1990 | EP0377543A1 Device and process for treating various parts or articles by means of dipping |
| 07/11/1990 | CN1008747B Aqueous oil-rust removing solution |
| 07/04/1990 | CN1008637B Process for producing heat pipe |
| 07/03/1990 | US4939034 Chromium compound with binder and paint layers |
| 07/03/1990 | CA1271264A1 Adhesion promoting process for fabricating multilayer circuit boards |
| 06/28/1990 | WO1990005204A3 Surface treatment of metals |
| 06/27/1990 | EP0375153A1 Detection system for chemical analysis of zinc phosphate coating solutions |
| 06/26/1990 | US4937055 Surface treatment for thin metal or semiconductor oxide coatings |
| 06/26/1990 | CA1270989A1 Primer coating composition |
| 06/26/1990 | CA1270730A1 Bath and process for the chemical conversion of metal substrates with zinc |
| 06/20/1990 | EP0048718B2 Process for inhibiting corrosion of metal surfaces |
| 06/13/1990 | EP0372915A1 Composition and process for coating metallic surfaces |
| 06/13/1990 | EP0372591A1 Process for phosphatizing metal surfaces |
| 06/05/1990 | US4931317 Composition and process for the formation of a black coating on surfaces of materials |
| 06/05/1990 | US4931109 Method and apparatus for depositing an inorganic phosphate coating |
| 06/05/1990 | US4931074 Anticorrosion coating composition with improved stability, and coated substrate |
| 06/05/1990 | CA1269949A1 Electroplating and phosphating hot-galvanized steel product |
| 05/31/1990 | WO1990005794A1 Tannin mannich adducts for improving corrosion resistance of metals |
| 05/30/1990 | EP0370976A2 Organic phosphatizing composition and system for using it |
| 05/30/1990 | EP0370535A1 Process for applying phosphate coatings |
| 05/23/1990 | EP0369616A2 Metal surface treatment composition and process |
| 05/23/1990 | CN1008122B Multifunctional rust-removing and -preventing agent |
| 05/23/1990 | CA2003639A1 Organic phosphatizing composition and system for using it |
| 05/22/1990 | US4927472 Conversion coating solution for treating metal surfaces |
| 05/17/1990 | WO1990005204A2 Surface treatment of metals |
| 05/16/1990 | CA2002979A1 Tannin mannich adducts for improving corrosion resistance of metals |
| 05/10/1990 | DE3914258C1 Vessel for treating small industrial parts in liq. bath - comprises horizontal rotatable drum with lid on horizontal trunnions held in bearings |
| 05/09/1990 | EP0367504A2 Surface treatment of metals |
| 05/03/1990 | DE3934112A1 Steel products with heat and corrosion resistance - have 0.2-10 micron coating of nickel, zinc layer and chromate film |
| 05/03/1990 | DE3934111A1 Stahlerzeugnis mit waermebestaendigen, korrosionsbestaendigen ueberzugsschichten Steel product with waermebestaendigen, korrosionsbestaendigen coating layers |
| 05/02/1990 | EP0365682A1 Hot-dip zinc-aluminum alloy coated steel sheet for prepainted steel sheet, process for producing the same and prepainted steel sheet. |
| 05/01/1990 | US4921552 Polyacrylic acid, hexafluorozirconic acid, hydrofluoric acid |
| 04/25/1990 | EP0364596A1 METHODS FOR PRODUCING Zn-Ni ALLOY-PLATED STEEL SHEET HAVING EXCELLENT PRESS MOLDABILITY |
| 04/25/1990 | CN1007736B Insulating-coating forming for tapes of soft magnetic alloy |
| 04/20/1990 | CA2000826A1 Surface treating agent before coating |
| 04/18/1990 | EP0364132A1 Method for forming conversion coating on surface of copper or copper alloy |
| 04/18/1990 | EP0363536A1 Treatment of condenser tubes |
| 04/18/1990 | CN1041402A Rust removal and passivation technology of iron and steel |
| 04/17/1990 | US4917960 Porous coated product |
| 04/17/1990 | US4917737 Sealing composition and method for iron and zinc phosphating process |
| 04/11/1990 | EP0363200A2 Improvement of zinc phosphate treatment for cold working |
| 04/10/1990 | CA1267746A1 Treatment of metal with derivative of poly- alkenylphenol |
| 04/05/1990 | WO1990003267A1 Improved fluoropolymer-metal laminates |
| 04/04/1990 | EP0361375A1 Phosphate-coating process |
| 04/04/1990 | EP0361116A1 Polyurethane-containing lubricating textile oil |
| 04/03/1990 | US4912934 Forming corrosion resistance film, of molybfrnum-oxides and iron oxides on inside wall |
| 03/28/1990 | CN1040811A Method and composition for surface treatment |
| 03/27/1990 | US4911818 Plurity of surface treatment baths |
| 03/27/1990 | US4911766 Method of refining magnetic domains of electrical steels using phosphorus |
| 03/27/1990 | CA1267062A1 Method for activating metal surfaces prior to zinc phosphation |
| 03/22/1990 | WO1990002834A1 Polyurethane-containing spinning preparations |
| 03/22/1990 | DE3828489A1 Process for producing corrosion-inhibiting oxide layers |
| 03/21/1990 | EP0359296A1 Phosphating process |
| 03/21/1990 | EP0359002A1 Process for coating metal articles, and articles so coated |
| 03/20/1990 | CA1266766A1 Coating composition containing particles of leachable chromate figments |
| 03/14/1990 | EP0358480A2 Process for producing multilayer printed wiring board |
| 03/14/1990 | EP0358338A2 Method and composition for surface treatment |
| 03/14/1990 | EP0126754B1 Thixotropic coating compositions and coating method |