| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
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| 02/14/1989 | US4804705 Gel composition |
| 02/09/1989 | WO1989001056A1 Process and device for purifying degreasing solutions |
| 02/08/1989 | EP0302337A2 Process for separating metal sulphates from sulphuric acid |
| 02/07/1989 | US4802990 Solution and method for dissolving minerals |
| 02/01/1989 | CN1030809A Method for improving permeability of oil-well strata and its solvent |
| 01/25/1989 | EP0300242A1 Process and apparatus for the control of the partial density of metal and acid in pickling baths |
| 01/18/1989 | EP0299307A2 Foam retarding addition for acid liquids |
| 01/18/1989 | EP0299166A1 Method for removing scale on inner surfaces of boiler tube members |
| 01/11/1989 | CN1030284A Welded pipe joint |
| 01/10/1989 | US4797220 Mixtures of alcohols, hydroxycarboxylic acids and alkanolamines |
| 01/10/1989 | CA1248339A1 Scale removal treatment |
| 01/03/1989 | CA1247992A1 Process and apparatus for deoxidation of shells for the production of pipes |
| 12/28/1988 | EP0296431A2 Use of a branched carboxylic acid as additive for an alkaline detergent composition for cleaning metallic articles in an electrolytic cleaning operation |
| 12/28/1988 | CN88103731A Process for production or recovery of acids from metalliferous solutions of such acid |
| 12/22/1988 | DE3719604A1 Pickling of semifinished articles |
| 12/21/1988 | EP0296147A1 Process for the recovery and/or regeneration of acids from metalliferous solutions of these acids |
| 12/20/1988 | CA1247040A1 Process for removing surface oxides from a metal substrate |
| 12/07/1988 | CN88105294A Utilization of the colloidal by product from pyrazolone drugs |
| 12/06/1988 | US4789406 Method and compositions for penetrating and removing accumulated corrosion products and deposits from metal surfaces |
| 12/06/1988 | CA1245955A1 Process for the removal of solid deposits from water supply installations |
| 12/06/1988 | CA1245954A1 Alkaline cleaning process |
| 12/01/1988 | WO1988009369A1 Low foaming detergent composition |
| 12/01/1988 | WO1988009368A1 Composition and process for cleaning of fire-side parts of firing devices |
| 11/30/1988 | CN87103015A Rust-removing and-preventing method for iron and steel |
| 11/29/1988 | US4787999 Compositions for cleaning aluminum |
| 11/29/1988 | EP0208767A4 Solution for cleansing a cooling system. |
| 11/23/1988 | CN88101409A Composition of rust-removing agent |
| 11/09/1988 | EP0289844A2 Support material and process for its manufacture |
| 11/08/1988 | CA1244328A1 Methods and compositions for removing copper and copper oxides from surfaces |
| 11/01/1988 | CA1243917A1 Process and agent for the prevention of tartrate deposits |
| 10/26/1988 | EP0221070B1 Process for the separation of emulsions containing water as a continuous phase and device for the application of the process |
| 10/25/1988 | US4780150 Corrosion inhibited acid cleaners |
| 10/19/1988 | CN87102287A Cleaning liquid for metal surface and its method of preparation |
| 10/18/1988 | US4778533 Treatment with alkaline hydroxyethane diphosphonic acid; brightness |
| 09/27/1988 | US4773941 Method and device for washing porous workpieces in an impregnation process |
| 09/27/1988 | US4773940 Lead frame preparation for solder dipping |
| 09/21/1988 | EP0282921A1 Liquid, phosphate-free, one phase degreasing agent for aluminium surfaces |
| 09/21/1988 | EP0282863A2 Liquid alkaline cleaning concentrates |
| 09/21/1988 | CN88105662A Chemical cleaner for heavy oil stain |
| 09/20/1988 | CA1242130A1 Acidic compositions having ph values of less than about 1 and method for producing same |
| 09/13/1988 | US4770808 P-hydroxybenzoic acid and triphenylcarbinol |
| 09/13/1988 | US4770196 Chemical cleaning system |
| 09/07/1988 | EP0281176A1 Lacquering pretreatment process for aluminium or aluminium alloy work pieces |
| 08/23/1988 | US4765958 Process for inhibiting the corrosion of a mass of metal in contact with an acid bath containing ferric ions |
| 08/23/1988 | US4765921 Acid composition with high concentrations of active materials for the treatment of water and/or cleaning installations containing same |
| 08/17/1988 | EP0278256A1 Method and apparatus for removing oxide layers |
| 08/11/1988 | WO1988005881A1 A welded pipe joint |
| 08/10/1988 | EP0277781A1 Process for chemically shaving and pickling copper rod |
| 08/09/1988 | US4762638 Alkaline cleaner for aluminum |
| 08/09/1988 | CA1240229A1 Surface cleaning process |
| 08/03/1988 | EP0276774A2 Composition for use in the processing of semiconductor materials and method for its preparation and use |
| 08/03/1988 | EP0276241A1 Pickling bath for steel parts and pickling method using said bath |
| 08/03/1988 | CN88100060A High efficient rust-removing passivator |
| 07/28/1988 | DE3801018A1 Process for removing scale and oxides from metals, metal alloys, in particular alloyed steels, highly alloyed steels and carbon steels, by means of a pickling bath containing iron (III) ions |
| 07/28/1988 | DE3700826A1 Anode material for operating an electroflotation cell for the purification of waste waters heavily contaminated with corrosion inhibitors and of alkaline cleaning solutions |
| 07/26/1988 | CA1239615A1 Treatment of ultrafiltrate by electrodialysis |
| 07/26/1988 | CA1239560A1 Fatty alcohol oxyalkylates, possessing blocked terminal groups, for industrial cleaning processes, in particular bottle-washing and metal-cleaning |
| 07/21/1988 | DE3800337A1 Acidic cleaner for aluminium |
| 07/20/1988 | EP0275043A1 Acid cleaner for aluminium |
| 07/20/1988 | EP0274776A1 Baths and process for chemically polishing stainless steel surfaces |
| 07/12/1988 | US4756846 Organic surfactant, inorganic alkali metal detergent builder, water, inorganic alkaline earth metal salt |
| 07/12/1988 | CA1239208A1 Metal treating process control |
| 07/12/1988 | CA1239139A1 Pickling agent |
| 07/06/1988 | EP0273182A1 Method of cleaning a container |
| 07/05/1988 | US4754803 Manufacturing copper rod by casting, hot rolling and chemically shaving and pickling |
| 06/23/1988 | DE3738072A1 Method for chemical flux-free surface pretreatment for hot-dip aluminising |
| 06/15/1988 | EP0271158A2 Enhanced cleaning procedure for copper alloy equipment |
| 06/07/1988 | US4748737 Method of removing surface oxidation from particulates |
| 06/07/1988 | CA1237644A1 Process for treating and recovering pickling waste liquids for stainless steel |
| 06/02/1988 | WO1988003964A1 Liquid dispersion composition for, and method of, polishing ferrous components |
| 06/02/1988 | WO1988003963A1 Dry granular composition for, and method of, polishing ferrous compositions |
| 06/01/1988 | EP0269234A1 Recovery of acids from materials comprising acid and salt |
| 05/25/1988 | EP0268361A1 Solution, composition and process of refining metal surfaces |
| 05/25/1988 | CN86104101A Phosphoric cleaning agent and its preparation method |
| 05/11/1988 | EP0267166A2 Method of reducing the emission of nitrogen oxides from a liquid containing nitric acid |
| 05/04/1988 | EP0265578A1 A non-abrasive polish or cleaning composition and process for its preparation |
| 05/03/1988 | USRE32661 Cleaning aluminum at low temperatures |
| 05/03/1988 | US4741863 Alkaline degreasing solution comprising amine oxides |
| 04/27/1988 | CN87106982A Recovery of acid from wastewater containing acids and salts |
| 04/26/1988 | US4740281 Recovery of acids from materials comprising acid and salt |
| 04/26/1988 | US4740247 Cleaning with terpenes and surfactant mixtures |
| 04/21/1988 | WO1988002652A1 Recovery of acids from materials comprising acid and salt |
| 04/20/1988 | EP0264151A1 Process for obtaining phosphate coatings |
| 04/13/1988 | CN87106299A Process and device for sepparation and recovery of volatile solvents |
| 03/23/1988 | EP0260481A2 Process and device for the separation and recovery of volatile solvents |
| 03/23/1988 | CN86105940A Aqueous rustproof cleaning solution |
| 03/16/1988 | EP0259533A1 Method of reducing the emission of nitrogen oxides from a liquid containing nitric acid |
| 03/16/1988 | CN87105097A Method for chemically removing stainless steel oxide skin |
| 03/15/1988 | US4731194 Silica-containing alkaline dispersions and their use in cleaning solid surfaces |
| 03/15/1988 | US4731124 Application technique for the descaling of surfaces |
| 03/09/1988 | EP0258216A1 Scale removal composition comprising alpha-hydroxy carboxylic acid and thickener |
| 03/02/1988 | CN87104237A Aqueous oil-rust removing solution |
| 03/01/1988 | US4728456 Aluminum surface cleaning agent |
| 03/01/1988 | US4728410 In electrolytic cell |
| 03/01/1988 | US4728404 Electrolytic |
| 03/01/1988 | US4728403 Coagulation, floation with metal hydroxide |
| 02/24/1988 | EP0256728A2 Rust converting and removing compositions |
| 02/16/1988 | US4725374 Peroxydisulfuric acid and halide |
| 02/09/1988 | US4724042 Dry granular composition for, and method of, polishing ferrous components |
| 02/09/1988 | US4724041 Oxalic acid, phosphorus sequestering agent |