| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
|---|
| 12/04/1990 | US4975335 Fe-Mn-Al-C based alloy articles and parts and their treatments |
| 11/28/1990 | CN1010554B Process and device for separation and recovery of volatile solvents |
| 11/27/1990 | US4973380 Process for etching copper base materials |
| 11/27/1990 | CA1276862C Method of removing scale from wet oxidation treatment apparatus |
| 11/22/1990 | EP0398863A1 Process for recovery of metals or metal oxides and acids from salt solutions, in particular from pickling acids or pickling acid mixtures |
| 11/21/1990 | CN1047115A Acid cleaning agent for cleaning oxide layer on stainless steel surface |
| 11/20/1990 | US4971631 Compositions and methods for cleaning hard surfaces |
| 11/14/1990 | CN1046946A Method and composition for refinement of metal |
| 11/14/1990 | CN1010419B Rust remover |
| 11/13/1990 | US4970015 Ethylene glycol, hydrochloric acid |
| 11/13/1990 | US4970014 Aluminum cleaning and brightening composition and method of manufacture thereof |
| 11/07/1990 | EP0395815A1 Method and composition for refinement of metal surfaces |
| 11/07/1990 | CN1010327B Slow corrosion inhibiting fog agent for acid washing of hydrochloric acid |
| 10/31/1990 | EP0395282A2 Thickened aqueous compositions |
| 10/31/1990 | EP0394437A1 Method for cleaning the surface of metal parts |
| 10/23/1990 | CA1275378C Method of controlling an aluminum surface cleaning composition |
| 10/17/1990 | EP0392394A1 Surfactant composition, degreasing composition and degreasing bath |
| 10/11/1990 | CA2014085A1 Surfactant composition, degreasing composition and degreasing bath |
| 10/09/1990 | US4961598 Welded pipe joint |
| 10/07/1990 | WO1990011819A1 Method and apparatus to control a salt stream to be treated in an electrodialytic water splitter |
| 10/07/1990 | CA2051664A1 Method and apparatus to control a salt stream to be treated in an electrodialytic water splitter |
| 10/04/1990 | DE3910042A1 Composition for long-lasting cleaning of metal surfaces |
| 10/02/1990 | US4960515 Liquid recovery system |
| 09/26/1990 | EP0389157A2 Novel chemical compounds and their use as low foam surfactants and antifoaming agents |
| 09/26/1990 | CN1045608A Heat-type cleaning solution for anti-choking of sewage |
| 09/25/1990 | US4959105 Aluminium cleaning composition and process |
| 09/25/1990 | CA1274456A1 Sodium permanganate etch baths containing a co-ion for permanganate and their use in desmearing and/or etching printed circuit boards |
| 09/20/1990 | WO1990010732A1 Benzotriazole based corrosion inhibiting compositions |
| 09/20/1990 | WO1990010730A1 Sulfuric acid composition having low surface tension |
| 09/18/1990 | US4957579 Method and apparatus for applying liquid acid to a surface |
| 09/12/1990 | EP0387057A1 Surface-treating agents for copper and copper alloy |
| 09/12/1990 | EP0362220A4 Vehicle and method to chemically assist high gloss buffing and cleaning of a waxed surface |
| 09/12/1990 | CN1009546B Treatment of chlorhydric acid pickling waste containing iron |
| 09/11/1990 | CA1273861A1 Process for cleaning aluminum |
| 09/06/1990 | DE3906791A1 Method of reprocessing waste pickling liquors containing metal, nitric acid and hydrofluoric acid |
| 08/30/1990 | DE3937438A1 Descaling steel by pickling - using fluoric acid soln. contg. ferric ions and electrolytically producing nascent oxygen in soln. to reoxidise ferrous ions |
| 08/29/1990 | EP0384108A1 Process and apparatus for cleaning metal parts |
| 08/28/1990 | US4952387 Evaporative concentration, cooling, separation while controlling ferric concentration |
| 08/28/1990 | CA1273257A1 Composition for degreasing and cleaning tin surfaces |
| 08/21/1990 | US4950392 Filtration tank for filtering waste water used in washing mechanical components |
| 08/21/1990 | CA1272980A1 Acid etching of stainless steel products |
| 08/16/1990 | EP0382709A1 Process for working up acidic iron-containing solutions, in particular used pickling liquors |
| 08/08/1990 | EP0257037B1 Article and method for tarnish removal |
| 08/07/1990 | US4946520 Copper rod manufactured by casting, hot rolling and chemically shaving and pickling |
| 08/01/1990 | EP0380169A1 A process for the cleaning of metallic, for example iron or steel, internal surfaces of industrial equipment |
| 07/31/1990 | US4945004 Base material for an aluminum offset printing plate |
| 07/31/1990 | US4944807 Without damaging core |
| 07/26/1990 | WO1990008385A1 Method for radioactive decontamination of metal surfaces, particularly portions of primary circuits of water-cooled nuclear reactors |
| 07/26/1990 | WO1990008205A1 Nonchromate deoxidizer for aluminum alloys |
| 07/25/1990 | EP0379093A1 Hard surface cleaning composition |
| 07/24/1990 | US4943392 Containing butoxy-propanol with low secondary isomer content |
| 07/24/1990 | US4943360 Process for recovering nitric acid and hydrofluoric acid from waste pickle liquors |
| 07/19/1990 | CA2007566A1 Hard surface cleaning composition |
| 07/17/1990 | US4941925 Spraying detergents of aliphatic carboxylic acids and alkanol amine salts |
| 07/11/1990 | CN1008747B Aqueous oil-rust removing solution |
| 07/10/1990 | US4940493 Aluminum cleaning composition and process |
| 07/05/1990 | DE3844055A1 Process for pickling metals |
| 07/04/1990 | EP0376367A1 Aqueous cleaning agent for metal surfaces |
| 07/04/1990 | CN1043535A Technology for regenerating the waste liquid of sulphuric acid pickling |
| 07/03/1990 | US4938838 With hydrogen peroxide |
| 06/28/1990 | DE3843148A1 Process for cleaning workpieces |
| 06/27/1990 | EP0375167A1 Cleansing compositions |
| 06/26/1990 | US4937054 Adding hydrofluoric acid and sodium compound after analysis; precipitation and separation of a sodium zirconium fluoride |
| 06/20/1990 | EP0373174A1 Process and device for purifying degreasing solutions |
| 06/20/1990 | CN1043089A Method for purification of acids from materials comprising acid and salt |
| 06/19/1990 | US4935066 Process for decomposing baked-on grease or oil |
| 06/14/1990 | WO1990006355A1 Aqueous caustic cleaning solutions |
| 06/14/1990 | WO1990006168A1 Method for purification of acids from materials comprising acid and salt |
| 06/13/1990 | EP0372672A1 Descaling of jacket of glass-lined vessels |
| 06/13/1990 | EP0372610A1 Aqueous metal surface cleaner |
| 06/07/1990 | CA2004762A1 Aqueous cleaner for metal surfaces |
| 06/06/1990 | CN1042736A Aqueous solutions especially for cleaning high strength steel |
| 06/05/1990 | US4931104 Process for cleaning porous parts |
| 06/05/1990 | US4931102 Metal cleaning process |
| 05/23/1990 | EP0369984A1 Process and installation for pickling high-grade steel strip |
| 05/16/1990 | EP0368205A1 Aqueous solutions especially for cleaning high strength steel |
| 05/10/1990 | DE3837671A1 Product for the permanent cleaning of non-ferrous metal surfaces |
| 05/09/1990 | EP0367112A1 Method of descaling stainless steel and apparatus for same |
| 05/09/1990 | EP0367074A2 Preparing printed circuit boards for electroplating |
| 05/09/1990 | EP0244417B1 Method for pickling iron or steel objects |
| 05/03/1990 | DE3837053A1 Device and process for pickling steel objects |
| 04/18/1990 | CN1041402A Rust removal and passivation technology of iron and steel |
| 04/17/1990 | US4917778 Process for the corrosion protection of neodymium-iron-boron group sintered magnets |
| 04/17/1990 | CA1267827A1 Solvent for removing iron oxide deposits |
| 04/11/1990 | EP0362220A1 Vehicle and method to chemically assist high gloss buffing and cleaning of a waxed surface |
| 04/11/1990 | EP0220202B1 Recovery of mixed acids from mixed salts |
| 04/10/1990 | US4915864 Carboxylic acid or salts thereof as solubilizing agent wetting agent for glass, fibers, metals |
| 04/04/1990 | EP0361102A1 Aluminium-cleaning composition |
| 04/04/1990 | EP0151114B1 Acid based variable viscosity compositions such as corrosion and grease removers and polishers |
| 04/04/1990 | CN1041010A Technology of steel derusting and passivating |
| 04/03/1990 | US4913849 Potassium permanganate and chromic acid |
| 03/28/1990 | CN1007350B Process for degradation of alkyl polysulfide to polysulfide of low sulfur |
| 03/14/1990 | EP0357794A1 Process for pickling electrical steel sheet |
| 03/07/1990 | EP0357408A1 Metal cleaning process |
| 03/06/1990 | US4906327 Method and composition for refinement of metal surfaces |
| 02/28/1990 | EP0355452A1 Pickling acid for high-grade steel, and process for treating the spent pickling acid |
| 02/22/1990 | DE3828229A1 Means for cleaning, disinfection and maintaining drinking water plants and beverage industry plants |
| 02/21/1990 | CN1039850A Process for removing oxide layer and scale from metals and metal alloys, in particular alloyed steels, high-alloyed steels and carbon steels in pickling bath with fe (iii) ions as active component |
| 02/20/1990 | US4902351 Method for decontaminating radioactively contaminated surfaces of metallic materials |
| 02/13/1990 | US4899798 Method of and apparatus for recovering and reusing organic pickling vapors |