| 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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| 03/06/1991 | CN1011911B Corrosion-resistant method for the outer and inner walls of steel pipe bundle |
| 03/05/1991 | US4997722 Whiskered surface of copper oxide, sodium hydrosulfate and polymer reaction product; printed circuits |
| 03/05/1991 | US4997516 Method for improving adherence of copper foil to resinous substrates |
| 03/05/1991 | CA1280998C Method for formation of hydrophilic corrosion-resistant coating on the surface of metallic material |
| 02/27/1991 | EP0414441A2 Burnishing method and composition |
| 02/27/1991 | EP0414301A1 Process for obtaining phosphate coatings on metal surfaces |
| 02/27/1991 | EP0414296A1 Process for obtaining phosphate coatings on metal surfaces |
| 02/27/1991 | CN1049531A Method for making manganese-containing zinc phosphate layer on surface of zinc-plated steel |
| 02/21/1991 | WO1991002110A1 Treatment to reduce solder plating whisker formation |
| 02/21/1991 | DE3927131A1 Verfahren zur herstellung von manganhaltigen zinkphosphatschichten auf verzinktem stahl Process for the preparation of manganese-containing zinc phosphate coatings on galvanized steel |
| 02/19/1991 | US4994121 Metal coating pretreating agent |
| 02/18/1991 | WO1991002829A2 Process for producing manganese-containing zinc phosphate coatings on galvanized steel |
| 02/18/1991 | CA2065004A1 Process for producing manganese-containing zinc phosphate coatings on galvanized steel |
| 02/12/1991 | US4992116 Method and composition for coating aluminum |
| 02/12/1991 | US4992115 Surface treatment chemical and bath for aluminum and its alloy |
| 02/07/1991 | DE3925838A1 Recycling zinc and phosphate form phosphating plant sludge - by vaporising in presence of sand and coal at high temp. |
| 02/06/1991 | EP0411609A2 Surface treatment chemicals and bath for aluminum or its alloy and surface treatment method |
| 02/06/1991 | EP0411606A2 Surface treatment chemicals and bath for aluminum or its alloy and surface treatment method |
| 02/06/1991 | EP0411296A1 Drive device of a vehicle |
| 02/02/1991 | CA2022254A1 Surface treatment chemicals and bath for aluminum or its alloy and surface treatment method |
| 02/02/1991 | CA2022253A1 Surface treatment chemicals and bath for aluminum or its alloy and surface treatment method |
| 01/30/1991 | EP0410497A1 Process for the passivate rinsing of phosphate coatings |
| 01/30/1991 | CN1048896A Carbide chip with surface solid lubricating layer and its forming method |
| 01/29/1991 | US4988396 Protective coating placed in a multistep process, nitrates of aluminum and alkali metal are treated with alkali metal perman ganate and then with alkali metal silicate |
| 01/23/1991 | EP0409130A1 Aluminum heat exchanger and method of manufacturing same |
| 01/22/1991 | US4986977 Recovery of useful products from by-products of phosphate conversion coating process |
| 01/22/1991 | CA1279243C Aqueous compositions for visual inspection and cleaning of metallic surfaces |
| 01/16/1991 | CN1048554A Production of grain-oriented silicon steel sheets having insulating film formed thereon |
| 01/15/1991 | US4985087 Treating zinciferous metal surfaces to blacken them |
| 01/15/1991 | CA1278985C Grain-oriented silicon steel and stress coating therefor |
| 01/09/1991 | EP0407015A1 Phosphate coated metal product, process for producing it, concentrate for use in the process and concentrate for replenishing the coating solution |
| 01/09/1991 | EP0406833A1 Production of grain-oriented silicon steel sheets having an insulating film formed thereon |
| 01/08/1991 | US4983262 Depositing black nickel |
| 01/02/1991 | EP0406215A2 Process and apparatus for the treatment of the surface of objects |
| 01/02/1991 | EP0405340A1 Improved surface blackening treatment for zinciferous surfaces |
| 12/27/1990 | CA2019810A1 Surface blackening treatment for zinciferous surfaces |
| 12/22/1990 | WO1990015889A1 Process for producing zinc phosphate coatings containing manganese and magnesium |
| 12/22/1990 | CA2062952A1 Process for producing zinc phosphate coatings containing manganese and magnesium |
| 12/19/1990 | EP0403241A1 Method for forming zinc phosphate film on metal surface |
| 12/19/1990 | CN1047939A Method for improving adhesion of plastic encapsulant to copper containing leadframes |
| 12/18/1990 | US4978399 Plating or painting pretreatment with an ionized metal compound and a hydroxystyrenesulfonate polymer; coroosion resistance; adhesion |
| 12/12/1990 | EP0402084A1 Compositions and method for applying coatings to metallic surfaces |
| 12/12/1990 | EP0401616A1 Process for applying manganese containing phosphate coatings on metallic surfaces |
| 12/12/1990 | CN1047706A Constant temp. rust-proof liquid phosphide |
| 12/11/1990 | US4977036 Diffuson coating, cooling; surface treatment |
| 12/05/1990 | CN1047538A Improved non-accelerated iron phosphating |
| 12/05/1990 | CN1047537A Composition and process for zinc phosphating |
| 12/05/1990 | CA2018100A1 Compositions and method for applying coatings to metallic surfaces |
| 12/04/1990 | WO1990015167A1 Process for producing manganese-containing phosphate coatings on metal surfaces |
| 12/04/1990 | US4975330 Coating compositions containing unreacted hexavalent chromium, a method of applying and an article |
| 12/04/1990 | CA2058631A1 Process for producing manganese-containing phosphate coatings on metal surfaces |
| 11/28/1990 | EP0399425A1 Process for applying a phosphate running layer on a bearing metal layer |
| 11/28/1990 | CN1047331A Compositions and process for improved preparation of metals for cold forming |
| 11/27/1990 | US4973359 Surface treatment chemical and bath for forming hydrophilic coatings and method of surface-treating aluminum members |
| 11/22/1990 | EP0398203A1 Improved non-accelerated iron phosphating |
| 11/22/1990 | EP0398202A1 Composition and process for zinc phosphating |
| 11/22/1990 | EP0398201A1 Compositions and processes for improved preparation of metals for cold forming |
| 11/21/1990 | CN1047114A Chemical oxidation method for aluminium plating film |
| 11/20/1990 | US4971636 Chromate coatings, phosphate caoatings on steels |
| 11/20/1990 | US4971635 Low-cure coating composition |
| 11/19/1990 | CA2017012A1 Composition and process for zinc phosphating |
| 11/18/1990 | CA2017019A1 Non-accelerated iron phosphating |
| 11/18/1990 | CA2017014A1 Compositions and process for improved preparation of metals for cold forming |
| 11/15/1990 | CA2016798A1 Coating product, process for producing, concentrated agent for treating with phosphate, and concentrated treating agent for supplementary use |
| 11/14/1990 | CN1046946A Method and composition for refinement of metal |
| 11/13/1990 | US4970126 Highly corrosion-resistant, multi-layer coated steel sheets |
| 11/13/1990 | US4970114 Pyrophoric |
| 11/13/1990 | US4969974 Method for making electrode foil for an electrolyte capacitor |
| 11/13/1990 | US4969958 Alkali metal chlorite, alkali metal hydroxide, amphipathic anionic surfactant; high peel strength |
| 11/07/1990 | EP0396238A1 Method for treating aluminium surfaces |
| 11/07/1990 | EP0395815A1 Method and composition for refinement of metal surfaces |
| 11/07/1990 | CN1010326B Unoiling, rust-cleaning and parkerizing liquid |
| 11/06/1990 | US4968392 Treatment of condenser tubes |
| 11/06/1990 | US4968391 Process for the preparation of a black surface-treated steel sheet |
| 11/06/1990 | US4968362 Dark metallic product |
| 11/06/1990 | US4968360 Oxidation of ferrous to ferric and precipitation as phosphate; continuous processing |
| 10/31/1990 | EP0394696A1 Method of producing grain oriented electrical steel sheet having high magnetic flux density |
| 10/30/1990 | US4966634 Composition of the surface treatment for metal and the treatment method |
| 10/25/1990 | DE3913089A1 Chlorat- und nitritfreies verfahren zur herstellung von nickel- und manganhaltigen zinkphosphatschichten Chlorate and nitrite-free process for production of nickel and manganese-containing zinc phosphate coatings |
| 10/23/1990 | US4965095 Leaching, deoxidizing, realuminizing |
| 10/23/1990 | US4964774 Wood construction; nail, staples; zinc chromate, polyurethane coatings |
| 10/22/1990 | WO1990012902A1 A method and composition for coating aluminum |
| 10/22/1990 | WO1990012901A1 Process not using chlorate or nitrite for the production of nickel and manganese-containing zinc phosphate films |
| 10/22/1990 | CA2053244A1 Process not using chlorate or nitrate for the production of nickel and manganese containing zinc phosphate films |
| 10/18/1990 | WO1990009034A3 Surface treatment for thin metal or semiconductor oxide coatings |
| 10/16/1990 | US4963596 Treatment and after-treatment of metal with carbohydrate-modified polyphenol compounds |
| 10/16/1990 | US4963198 Composition and process for treating metal surfaces |
| 10/10/1990 | EP0391442A1 Improved surface treatment for zinciferous surfaces |
| 10/10/1990 | CN1009917B Liquid coating composition for producing high quality high performance fluorine-doped tin oxide coatings |
| 10/09/1990 | US4961794 Phosphate coatings for metal surfaces |
| 10/09/1990 | CA1275028A1 Highly anticorrosive coated steel sheet for fuel vessel and process for production thereof |
| 10/07/1990 | CA2014010A1 Surface treatment for zinciferous surfaces |
| 10/03/1990 | EP0390348A2 Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating |
| 10/03/1990 | CN1045817A Surface preparation for aluminium |
| 10/02/1990 | US4960647 Process for the reactive treating of palladium to form a protective coating and article |
| 10/02/1990 | US4960646 Titanium composite materials coated with calcium phosphate compound |
| 10/02/1990 | CA1274754A1 Passivation process and composition for zinc-aluminum alloys |
| 10/02/1990 | CA1274678A1 Coating composition for anti-corrosion |
| 10/01/1990 | WO1990012127A1 Process and composition for forming black oxide layers |
| 10/01/1990 | CA2050678A1 Process and composition for forming black oxide layers |