| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
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| 06/16/1999 | EP0922514A2 Apparatus for removing ceramic shell mold material from castings by caustic spraying |
| 06/16/1999 | EP0922124A1 Removal of fluoride-containing scales using aluminum salt solution |
| 06/16/1999 | EP0782611A4 Aqueous metal cleaner |
| 06/15/1999 | US5912219 Comprising organic acid, cationic, zwitterion, or amphoteric surfactants; odorless; removes limescale |
| 06/15/1999 | US5911835 Treatment of substrates with oxyamines, hydrazines, alkanolamines and water |
| 06/09/1999 | EP0817871B1 Corrosion protective cleaning agent for tin-plated steel |
| 06/08/1999 | US5909742 Metal cleaning method |
| 06/03/1999 | WO1999027162A1 Method for pickling steel products |
| 06/01/1999 | US5908511 Using mixture of sulfuric acid, iron compound, hydrogen fluoride and hydrogen peroxide |
| 05/27/1999 | WO1999025798A1 Composition and process for cleaning and deoxidizing aluminum |
| 05/27/1999 | CA2307642A1 Composition and process for cleaning and deoxidizing aluminum |
| 05/26/1999 | EP0725698A4 Acid assisted cold welding and intermetallic formation and dental applications thereof |
| 05/25/1999 | US5906215 2-butoyxethanol, the tetra sodium salt of ethylenediamine tetra acetic acid, sodium metasilicate, sodium laureth sulfate and water |
| 05/20/1999 | WO1999024643A1 Method of measuring acid concentration, and automatic control method and apparatus |
| 05/20/1999 | WO1999024642A1 Method for separating layers from articles |
| 05/20/1999 | WO1999014165B1 Method for treating metal containing acid solutions from surface treatment installations |
| 05/19/1999 | EP0916083A1 Corrosion monitoring process |
| 05/18/1999 | US5904157 Exposure to acid bath containing sulfuric acid and hydrogen peroxide at higher temperature and then to an oxidizing bathcontaining hydrogen proxide at lower temperature, rinsingwith high pressure water jets; drawn copper wire |
| 05/14/1999 | WO1999023283A1 Rust remover and preventer |
| 05/14/1999 | WO1999023193A2 Process for avoiding foaming during cleaning of metal salts of intermediate length carboxylic acids from surfaces |
| 05/12/1999 | EP0915186A1 Chromium-containing hot rolled steel strip and its production method |
| 05/12/1999 | EP0915185A1 Method of making austenitic stainless steel sheet |
| 05/12/1999 | EP0914225A1 Metal fibre agglomerate and process for manufacturing the same |
| 05/11/1999 | US5902780 Comprising hydroxylamine, about 10-80% by weight of an alkanolamine which is miscible with said hydroxylamine, and water |
| 05/11/1999 | US5902415 Aqueous sodium salt metal cleaner and method of using same |
| 05/11/1999 | CA2018631C Process for a passivating postrinsing of phosphate layers |
| 05/06/1999 | EP0766751B1 Method for pickling metal materials |
| 05/05/1999 | CN1216059A Composition for cleaning and etching electronic display and substrate |
| 05/05/1999 | CN1216011A Metal fibre agglomerate and process for mfg. same |
| 05/04/1999 | CA2023943C Process for removing copper and copper oxide deposits from surfaces |
| 04/29/1999 | WO1999021220A1 Methods and apparatus for cleaning semiconductor substrates after polishing of copper film |
| 04/28/1999 | EP0799293A4 Cleaning and surface conditioning of formed metal surfaces |
| 04/27/1999 | US5898024 A cleaner consists of a peroxy compound, an anhydrous and hydrous metasilicate or sequisilicate and a chelate selected from ethylenediamine tetraacetic acid, poly(alkylphophonic acid) and n-hydroxyethylethylenediaminetriacetic acid |
| 04/27/1999 | US5896664 Process for producing aluminum alloy bearing |
| 04/22/1999 | WO1999019541A1 Container for stripping silverware and related means |
| 04/21/1999 | EP0909344A1 Steel pickling process in which the oxidation of the ferrous ion formed is carried out electrolytically |
| 04/21/1999 | EP0909311A1 Post clean treatment |
| 04/21/1999 | EP0877833A4 Aluminum deoxidizing inhibitor, composition and process |
| 04/21/1999 | EP0707664B1 Storage stable titanium phosphate containing activating composition |
| 04/21/1999 | CN1214376A Method for preventing contamination by lead from metallic piping devices |
| 04/20/1999 | US5895763 Controlled carbonate removal from water conduit systems |
| 04/14/1999 | EP0908534A1 Aqueous composition for low-temperature metal-cleaning and method of use |
| 04/14/1999 | CN1213649A Descaling agent for gas water heater |
| 04/07/1999 | EP0804635B1 Non-silicated soft metal safe product |
| 04/07/1999 | CN1213394A Method for fluidizing tars |
| 03/25/1999 | WO1999014165A1 Method for treating metal containing acid solutions from surface treatment installations |
| 03/18/1999 | DE19740164A1 Processing acid solutions from metal or glass surface treatment plant |
| 03/09/1999 | US5879465 Removing oxides of iron scale from the surfaces of stainless steel strips |
| 03/03/1999 | EP0898621A1 Process for removing soap-contaminated conversion layers on metal workpieces |
| 03/03/1999 | CN1042353C Washing method using washing agent |
| 03/02/1999 | US5876608 Purification method |
| 03/02/1999 | CA2040786C Method for descaling hot-rolled stainless steel strip |
| 02/23/1999 | CA2044497C Surface treating agent for aluminum line pattern substrate |
| 02/10/1999 | EP0895962A1 Process and apparatus for obtaining or recovering acids from solutions |
| 02/09/1999 | US5868855 Surface processing method and surface processing device for silicon substrates |
| 02/04/1999 | DE19733064A1 Reclaiming chromic-containing systems |
| 02/03/1999 | CN2306233Y Self-centric liquid surface covering ball |
| 01/27/1999 | EP0892840A1 A composition for cleaning and etching electronic display and substrate |
| 01/26/1999 | US5863345 Washing dishes, cooking pan with a detergent solution comprising an anhydrous metasilicate or sesquisilicate, at least one of a sulfate or carbonate, a chelate, one of a hydrated metasilicate or sesquisilicate and a phosphate |
| 01/21/1999 | DE19730372A1 Cleaning and depassivating metal surface to be nitrided or carbonitrided |
| 01/20/1999 | EP0892084A1 Method for preventing contamination by lead from metallic piping devices |
| 01/20/1999 | EP0733091A4 Wheel cleaning composition containing acid fluoride salts |
| 01/13/1999 | EP0768997B1 Polyalkoxyl terpene derivatives and compositions containing same |
| 01/12/1999 | US5858947 Comprising ethylene diaminedisuccinic acid |
| 01/12/1999 | US5858463 Immersing worn die in a solution of nitric acid; forming fresh abrasion-resistant coating on surface; machining to adjust pattern of die |
| 01/12/1999 | US5858118 Cleaning and passivating a chromium containing stainless steel surface by treating with potassium hydroxide or sodium hydroxide, a chelant, and water; corrosion resistance |
| 01/07/1999 | EP0666897B1 Method and composition for degreasing the surface of an object |
| 01/07/1999 | DE19727939A1 Delivery of rinsing liquid in optimal amounts |
| 01/06/1999 | CN1041538C Method for treating pickle waste liquor |
| 01/05/1999 | US5855805 Microetching and cleaning of printed wiring boards |
| 12/30/1998 | EP0748396B1 Electrolysis process for regenerating a ferric chloride or sulphate solution, in particular for spray etching steel |
| 12/29/1998 | US5854145 Corrosion inhibitor solution applicator |
| 12/29/1998 | US5853490 Use of bicarbonates and carbonates in metal cleaning formulations to inhibit flash rusting |
| 12/29/1998 | US5853489 Cleaning process |
| 12/23/1998 | EP0885985A1 Method of treating a metal |
| 12/22/1998 | US5851304 Process for pickling a piece of steel and in particular a sheet strip of stainless steel |
| 12/10/1998 | DE19723682A1 Cleaning and pickling of surfaces, with regeneration of the cleaning and pickling agents |
| 12/09/1998 | EP0882120A1 Metal finishing process and composition |
| 12/09/1998 | EP0882110A2 Method for fluidizing tars |
| 12/09/1998 | CN1201079A Alkali Detergent composition for steel sheet |
| 12/09/1998 | CN1041118C Scaling agent for water tank of automobile |
| 12/02/1998 | EP0880566A1 Use of quaternized imidazoles as nonferrous metal corrosion inhibitors and antifreeze concentrates and coolant compositions containing said corrosion inhibitors |
| 12/01/1998 | US5843317 Recovery and reuse of anionic surfactants from aqueous solutions |
| 12/01/1998 | US5843240 Process for stainless steel pickling and passivation without using nitric acid |
| 11/25/1998 | CN1200141A Metal finishing process and composition |
| 11/24/1998 | US5840173 Process for treating the surface of material of high-grade steel |
| 11/24/1998 | US5840126 Washing material in aqueous solution containing water repellent surfactant, applying sonication to remove contaminants, allowing monomolecular layer of surfactant to form on surface, rinsing with pure water, drying |
| 11/19/1998 | WO1998051769A1 Process for removing tarnish from tarnished silverware |
| 11/18/1998 | EP0878564A1 Corrosion inhibitor solution applicator |
| 11/18/1998 | EP0877833A1 Aluminum deoxidizing inhibitor, composition and process |
| 11/17/1998 | US5837061 Pickled steel product subsequent treatment process and device, in particular for pickled carbon steel hot strips |
| 11/17/1998 | CA2098559C Reducing agent regeneration system |
| 11/14/1998 | CA2237451A1 Corrosion inhibitor solution applicator |
| 11/11/1998 | CN1198783A Composition for cleaning silver or copper |
| 11/10/1998 | US5834411 General purpose aqueous cleaner |
| 11/10/1998 | US5834129 Grained and anodized aluminum substrate for lithographic printing plates |
| 11/03/1998 | US5830282 Continuous particle separation operation |
| 10/29/1998 | WO1998048080A1 Method of taking off iron oxides and hydroxides from steel product surfaces |
| 10/28/1998 | EP0873394A1 Near tricritical point compositions |
| 10/28/1998 | EP0873392A1 Gelled near tricritical point compositions |