| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
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| 02/13/1990 | CA1265821A1 Process for the degradation of alkyl polysulfides into lower sulfur polysulfides |
| 02/08/1990 | DE3826499A1 Process for regenerating pickling solutions containing ZrF4 |
| 02/07/1990 | CN1006724B Aqueous alkaline cleaning process |
| 01/31/1990 | EP0352399A1 Process for the chemical after-treatment of steel-strip surfaces |
| 01/31/1990 | CN1039269A Corrosion-retarding fog inhibitor for hydrochloric acid washing |
| 01/30/1990 | US4897166 Surfactant and a perfluoroalkyl-containing ester of phosphoric acid |
| 01/25/1990 | WO1990000630A1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT |
| 01/24/1990 | EP0351771A1 Non-chrome cleaner/deoxidizer system |
| 01/17/1990 | EP0351303A1 Heteropolysaccharide BM07, process for obtaining it and its use in diverse industries |
| 01/16/1990 | US4894170 Tanks for separating solids |
| 01/11/1990 | DE3822953A1 Process for regenerating an iron- and/or zinc-containing hydrochloric acid bath |
| 01/11/1990 | DE3822658A1 Product for long-lasting cleaning of non-ferrous metal surfaces |
| 01/02/1990 | US4891150 Liquid sanitary cleansing and descaling agents and process for their production |
| 12/27/1989 | CN1038311A Treatment process for metallic anode reclamation |
| 12/26/1989 | US4889697 Method of refining ferrous ion-containing acid solution |
| 12/20/1989 | EP0346510A1 Pickling of semi-finished products |
| 12/20/1989 | CN1038131A 顶桩设备 Pile and equipment |
| 12/20/1989 | CN1006135B Method of surface treatment of melting super-purified aluminium welding wire |
| 12/13/1989 | EP0346139A2 Corrosion control |
| 12/12/1989 | US4886616 Aluminum surface cleaning agent |
| 12/12/1989 | US4886553 Cleaner for lithographic printing plates |
| 12/06/1989 | EP0344847A2 Improved liquid cleaners |
| 12/05/1989 | US4885106 Storable semiconductor cleaning solution containing permonosulphuric acid |
| 12/05/1989 | CA1263589A1 Aluminum surface cleaning agent |
| 11/30/1989 | WO1989011554A1 Method of treating a titanium structure |
| 11/28/1989 | US4883541 Nitric acid and alkali metal or ammonium halate |
| 11/22/1989 | CN1037366A Self-stripping metallic rust remover |
| 11/08/1989 | CN1036917A Cleaning agent and its application of adhesive matter on rolling cylinder for electric selection of titanium |
| 11/02/1989 | EP0339401A1 Method for regenerating pickling acids of zinc coating process |
| 10/19/1989 | WO1989009660A1 Vehicle and method to chemically assist high gloss buffing and cleaning of a waxed surface |
| 10/18/1989 | EP0337333A2 Process for treating used and soiled electronical or electromechanical parts |
| 10/18/1989 | EP0336942A1 Method and installation for forming a titanium or titanium alloy sheet element with adjusted surface |
| 10/17/1989 | US4874434 Using hydrofluoric and sulfuric acid pickling solution |
| 10/11/1989 | EP0180617B1 Surface cleaning process |
| 10/10/1989 | US4873014 Mixture of polyalkylene amine, polyoxyalkylene glycol, hydrochloric acid, water gives corrosion resistance |
| 10/10/1989 | US4872919 Method for removing precipitated calcium citrate from juice pasteurization or sterilization equipment |
| 10/05/1989 | WO1989009295A1 Method for cleaning the surface of metal parts |
| 09/21/1989 | WO1989008729A1 Process for pickling electrical steel sheet |
| 09/20/1989 | EP0332661A1 A welded pipe joint |
| 09/19/1989 | US4867853 Rinsing bath containing alkali borate, alkali silicane and alkali nitrite |
| 09/14/1989 | DE3805654A1 Method for regenerating ZrF4-containing pickle solutions |
| 09/06/1989 | EP0331231A1 Process for regenerating pickling solutions containing ZrF4 |
| 09/04/1989 | EP0228454A4 Compositions and methods for printed circuit board and/or printed wiring board cleaning and soldermask testing. |
| 08/31/1989 | DE3813159C1 Method and device for cleaning of metal and/or ceramic brackets |
| 08/29/1989 | US4861386 Enhanced cleaning procedure for copper alloy equipment |
| 08/29/1989 | US4861374 Oxidizing thiourea to disulfide derivative; heating to boiling point |
| 08/23/1989 | CN1034911A Solid water treating agent |
| 08/16/1989 | EP0327572A1 Recovery of acids from materials comprising acid and salt. |
| 08/15/1989 | US4857225 Cleaning chemical for aluminium surface |
| 08/09/1989 | EP0326867A2 Method for cleaning and coating pipe systems for water transport |
| 08/09/1989 | CN1034589A Preparation and application of low-temp. quick rust-removing solution |
| 08/08/1989 | US4855069 Polysaccharide-thickened aqueous acid cleaning compositions |
| 07/27/1989 | WO1989006639A1 Alkaline permanganate etchant regeneration process and apparatus |
| 07/26/1989 | EP0325097A1 Chemical polishing bath and method for aluminum alloys |
| 07/25/1989 | US4851148 Monitoring and replenishing ferric ion concentration by adding oxidizers |
| 07/25/1989 | US4851051 With nonionic surfactant |
| 07/24/1989 | EP0317614A4 Low foaming detergent composition. |
| 07/13/1989 | DE3744327A1 Method for cleaning oiled-up parts |
| 07/12/1989 | EP0236354B1 Method for the acid etching of stainless steel products |
| 07/11/1989 | US4846852 Method and apparatus for separating and recovering volatile solvents from exhaust air |
| 07/11/1989 | CA1257073A1 Stabilisation of aqueous acid solutions including hydrogen peroxide and metal ions |
| 07/05/1989 | CN1033656A Reductive cleaning agent of copper and copper alloy |
| 07/04/1989 | US4844744 Liquid, phosphate-free single phase degreasing compositions |
| 07/04/1989 | CA1256896A1 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid, salts thereof, and processes therefor |
| 06/27/1989 | US4843176 Compounds containing sulfur and amino groups |
| 06/27/1989 | CA1256357A1 Method of pickling iron or steel objects |
| 06/27/1989 | CA1256356A1 Algaecides |
| 06/27/1989 | CA1256350A1 Cleaner for steel cans |
| 06/22/1989 | DE3742367A1 Pickling and cleaning agent for metal surfaces |
| 06/08/1989 | DE3740089A1 Aqueous cleaner and preservative, in particular for aluminium and plastic surfaces |
| 06/07/1989 | EP0318724A1 Process for chemically stripping a high chromic surface coating from a work piece made from a nickel or cobalt based superalloy |
| 06/07/1989 | CN1004429B High efficient rust-removing passivator |
| 05/31/1989 | EP0317614A1 Low foaming detergent composition |
| 05/30/1989 | US4834912 Hydroxylamine sulfate, chelate-containing antideposit agent |
| 05/30/1989 | US4834803 Repairing rust on automobile bodies |
| 05/30/1989 | CA1254819A1 Cleaning silver |
| 05/24/1989 | EP0317210A1 Process for recovering nitric acid and hydrofluoric acid from waste pickle liquors |
| 05/23/1989 | CA1254493A1 High concentration sodium permanganate etch bath and its use in desmearing and/or etching printed circuit boards |
| 05/16/1989 | US4830827 For metals |
| 05/16/1989 | CA1254103A1 Tin-plate degreasing detergent |
| 05/10/1989 | EP0314750A1 Composition and process for cleaning of fire-side parts of firing devices |
| 05/09/1989 | US4828743 Composition for rust removal and method of use thereof |
| 05/02/1989 | US4827040 Process of degradation of alkyl polysulphides into polysulphides having a lower sulphur content |
| 04/26/1989 | EP0313335A1 Rust removal and composition therefor |
| 04/25/1989 | US4824589 Rust converting and removing compositions |
| 04/11/1989 | US4820344 Solution of corrosion and metal inhibitors, aliphatic carboxylic acids, polyglycerols, alcohols, surfactant for smoothening car bodies |
| 04/06/1989 | WO1989002792A1 Method and installation for forming a titanium or titanium alloy sheet element with adjusted surface |
| 04/05/1989 | EP0310103A1 Pretreatment process for aluminium |
| 03/29/1989 | EP0309432A2 A cleaning method and apparatus therefor |
| 03/29/1989 | EP0220189B1 Process for the regeneration of cleaning and degreasing baths and device for application of the process |
| 03/21/1989 | CA1251381A1 Acid cleaner composition |
| 03/21/1989 | CA1251380A1 Surface preparation of nickel base alloys for brazing |
| 03/08/1989 | EP0306268A1 Descaling of jackets of glasslined vessels |
| 03/08/1989 | EP0305827A1 Process for the ultrasonic cleaning of hard parts |
| 03/07/1989 | US4810406 Flush-free cooling system treatment composition |
| 03/07/1989 | US4810405 Rust removal and composition thereof |
| 02/28/1989 | CA1250406A1 Stabilisation |
| 02/21/1989 | US4806169 Process for the removal of solid deposits from water supply installations |
| 02/21/1989 | CA1250210A1 Process for the treatment of iron- and zinc- containing hydrochloric acid pickles |
| 02/16/1989 | DE3725819A1 Verfahren und vorrichtung zur reinigung von entfettungsloesungen Method and device for cleaning of degreasing solutions |