| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
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| 03/23/1993 | US5196146 Corrosion resistance |
| 03/23/1993 | US5196134 Cleaning flux on printed circuits, alkali metal hydroxide, hydrogen peroxide, wetting agent, water |
| 03/18/1993 | WO1993004779A1 Method of rinsing cleaned, degreased metal surfaces |
| 03/04/1993 | WO1993004216A1 Hydrofluoric acid compositions |
| 03/04/1993 | DE4128648A1 Verfahren zum spuelen von entfetteten und gereinigten metalloberflaechen A method for spook of degreased and cleaned metal surfaces |
| 03/03/1993 | EP0529332A1 Process for automatically controllable lowering the nitrite content in nitrite containing aqueous solutions to a concentration of less than 1 mg/l |
| 03/03/1993 | EP0334877B1 Dry granular composition for, and method of, polishing ferrous compositions |
| 03/02/1993 | CA1313996C Method and composition for refinement of metal surfaces |
| 02/25/1993 | DE4128107A1 Cryolite deposits removal from equipment or parts of equipment - by contacting equipment with soln. contg. mineral acid and boron cpd., useful in conversion coating of metal surfaces |
| 02/24/1993 | EP0527908A1 New formulations for iron oxides dissolution |
| 02/24/1993 | CN1069296A Cyclic cleaning method and cleaning agent for calcareous scale |
| 02/17/1993 | CN1069081A Preparation method of pickling slow-corrosive agent for copper heat exchanger |
| 02/17/1993 | CN1069080A Preparation method of pickling slow-corrosive agent for simple steel heat exchanger |
| 02/17/1993 | CN1069079A Preparation method of pickling slow-corrsive agent for aluminium heat exchanger |
| 02/10/1993 | EP0228454B1 Compositions and methods for printed circuit board and/or printed wiring board cleaning and soldermask testing |
| 02/04/1993 | WO1993002227A1 Process and apparatus for treating fluoride containing acid solutions |
| 02/04/1993 | WO1993002226A1 Aqueous electronic circuit assembly cleaner and method |
| 02/03/1993 | EP0525923A1 Multipurpose scale preventer/remover |
| 02/03/1993 | EP0525032A1 Improved aqueous degreaser compositions |
| 02/03/1993 | CN1068602A Microfiltration |
| 02/02/1993 | US5183573 Multipurpose scale preventer/remover |
| 01/21/1993 | WO1993001332A1 Method and acidic composition for cleaning aluminum |
| 01/21/1993 | DE4123827A1 Membrane filter system - feeds part of recovered watery phase back to cleaning system for workpieces |
| 01/20/1993 | CA2074141A1 Compositions for iron control in acid treatments for oil wells |
| 01/14/1993 | DE4122920A1 Hydrochloric acid pickling soln. regeneration with cold sulphuric acid - giving ferrous sulphate hepta:hydrate as useful by=product |
| 01/14/1993 | DE4122172A1 Regenerating cleaning soln. used for cleaning industrial parts - using gravity separator to remove oil, grease and dirt in continuous three=stage sepn. |
| 01/14/1993 | DE4121304A1 Cleaning agent for removing pastes from thick layer hybrid technology substrates - comprising water, limonene and surface active additives, is non-toxic and allows use of ultrasound |
| 01/13/1993 | CA2073369A1 System and process for recycling aqueous cleaners |
| 01/12/1993 | US5178822 Inserting into generator mockup probe including probe tube support plate and probe tube both having same characteristics as corresponding generator devices, conducting chemical cleaning operations, observing mockup probe corrosion |
| 01/06/1993 | CN1067687A Chemical method for removing oxidized layer of stainless steel |
| 12/29/1992 | US5175502 Dilution of acid bath samples to reduce influence of metal salts, measuring density before and after dilution, measuring electroconductivity, computer controlled |
| 12/29/1992 | US5174816 Surface treating agent for aluminum line pattern substrate |
| 12/29/1992 | US5174315 System for cleaning objects |
| 12/23/1992 | CN1067275A Acidic water-based cleaning agent for metals |
| 12/22/1992 | CA1311670C Rust removal and composition therefor |
| 12/16/1992 | EP0525032A4 Improved aqueous degreaser compositions. |
| 12/15/1992 | US5171477 Corrosion inhibition in chelant solutions |
| 12/10/1992 | WO1992022087A1 Method for cleaning and apparatus thereof |
| 12/09/1992 | EP0517580A1 Process for the purification and recovery of orthophosphoric acid by liquid-liquid extraction |
| 12/09/1992 | EP0517234A2 Method of regenerating aluminium surface cleaning agent |
| 12/09/1992 | CN1066898A Pre-treatment method for metal anode regeneration |
| 12/09/1992 | CN1066896A Chemical stripping method for stainless steel oxide layers |
| 12/09/1992 | CN1066895A Method for prepairng rapid descaling agent |
| 12/03/1992 | DE4117625A1 Cleaning and decontamination of carbon@ steel surfaces - by treatment with aq. soln. of ascorbic and picolinic acid |
| 12/01/1992 | US5167735 Prevention of formation of boron oxide white dust |
| 12/01/1992 | CA2060775A1 Corrosion inhibition in chelant solutions |
| 11/26/1992 | WO1992020835A1 Use of 2-ethylhexyl esters of fatty acids as cold-cleaning agents |
| 11/26/1992 | WO1992020834A1 Method for the desilification of aqueous inorganic solutions |
| 11/26/1992 | DE4116580A1 Verwendung von fettsaeure-2-ethylhexylestern als kaltreinigungsmittel Use of fatty acid-2-ethylhexyl esters as cold cleaner |
| 11/26/1992 | DE4110595C1 Wet-chemical removal of hard coatings from workpiece surfaces - comprises using hydrogen peroxide soln. stabilised by complex former e.g. potassium-sodium tartrate-tetra:hydrate |
| 11/25/1992 | CN1066477A Recipe and prodn. method of cleaning agent for quick descaling at normal atmospheric temp. |
| 11/19/1992 | EP0513753A1 Process for pickling steel-based metallic materials |
| 11/17/1992 | US5164016 Method for pickling or cleaning materials of steel, in particular stainless steel |
| 11/17/1992 | US5164015 Method for cleaning a vessel |
| 11/12/1992 | WO1992019587A1 Method of producing an amide product mixture, an amide product mixture and the use thereof |
| 11/12/1992 | WO1992019557A1 Limescale remover |
| 11/12/1992 | WO1992019549A1 Limescale remover |
| 11/12/1992 | DE4114951A1 Loosening and removal of iron oxide from metal surface esp. vessel or pipe - comprises using alkali poly:amino-carboxylate, reducing agent and buffer to bind alkali ions |
| 11/11/1992 | EP0357794B1 Process for pickling electrical steel sheet |
| 11/10/1992 | US5162076 Electrodialysis |
| 11/05/1992 | DE4116353C1 Removal of amorphous or partially dissolved silicon from aq. treatment soln. - by subjecting soln. collected in vessel to pressure-driven membrane filtration and returning silicon-free filtrate to treatment soln. |
| 10/21/1992 | EP0509759A1 Recovery of abrasive grit with a nitric acid-containing medium. |
| 10/16/1992 | CA2065964A1 Process using an acidic medium containing nitric acid |
| 10/13/1992 | US5154774 Process for acid pickling of stainless steel products |
| 10/07/1992 | EP0507660A1 Process and apparatus for the superficial treatment of a metallic material in a reactive solution, especially for the descaling or galvanising of hot laminated sheets |
| 10/07/1992 | EP0507006A1 Method of treating salt bath liquid |
| 10/07/1992 | EP0506928A1 Stripping solution and process for stripping compounds of titanium from base metals. |
| 10/03/1992 | CA2058526A1 Method of treating salt bath liquid |
| 09/30/1992 | EP0506254A1 An automatic continuous processing apparatus |
| 09/30/1992 | EP0506000A2 Apparatus for chemical treatment of metal |
| 09/30/1992 | EP0505606A1 Process for pickling and passivating stainless steel without using nitric acid |
| 09/29/1992 | US5151196 Purification of solutions for scale removal solutions by acidification and chelation, separation and precipitation |
| 09/29/1992 | CA1308002C Process for chemically shaving and pickling copper rod |
| 09/28/1992 | WO1992017408A1 Process for treating waste washing water used for impregnation |
| 09/28/1992 | CA2107114A1 Method for treatment of effluent from treatment of impregnation |
| 09/23/1992 | CN1064711A Process for preparation of smirch-removing agent for aluminium products |
| 09/22/1992 | US5149515 Nitric Acid, Spray Roasting, Atomizing |
| 09/02/1992 | EP0501867A1 Method for etching steel materials such as stainless steels and alloyed steels |
| 09/01/1992 | CA1306929C Process of producing phosphate coatings |
| 08/26/1992 | EP0332653B1 Liquid dispersion composition for, and method of, polishing ferrous components |
| 08/25/1992 | US5141563 Molten salt stripping of electrode coatings |
| 08/19/1992 | EP0411061A4 Fe-mn-al-c alloys and their treatment |
| 08/18/1992 | US5139632 Recovery of mixed acids from mixed salts |
| 08/06/1992 | WO1992012806A1 Treating an autodeposited coating with an alkaline solution containing anions of multifunctional organic acids |
| 08/05/1992 | EP0497302A1 Process for direct zinc electroplating of aluminum strip |
| 08/05/1992 | CN1017728B Chemical process of removing oxidized layer of stainless steel |
| 07/30/1992 | DE4102709C1 Degreasing metal surfaces using aq. prepn. - contg. biologically degradable adducts of lower alkylene oxide(s), fatty alcohol(s) and cationic surfactants |
| 07/29/1992 | CN1063124A Cleaning method for surface of stainless steel to get bright appearance |
| 07/22/1992 | CN1017532B Chemical cleaning agent for use of heavy greasy dirt |
| 07/21/1992 | US5131126 Softening surface oxide layer with alkaline earth metal chloride, annealing, mechanical descaling |
| 07/14/1992 | US5130000 Pickling high-grade steel |
| 07/08/1992 | CN1062559A Rust-proof solution for iron and steel materials |
| 07/07/1992 | US5128057 For electronic components |
| 07/01/1992 | EP0492713A1 Process for rinsing conversion coatings |
| 07/01/1992 | EP0492612A2 Electrolyzer and method of operating same |
| 06/27/1992 | CA2058527A1 Electrolyzer and method of operating same |
| 06/24/1992 | EP0491640A1 Process for separating silicon compounds present in a hydrochloric acid pickling bath for, in particular, steel sheets |
| 06/24/1992 | CN1017165B Process for production or recovery of acids from metalliferous solutims of such acid |
| 06/23/1992 | CA1303948C Process for pretreatment of chromium-rich oxide surfaces prior to decontamination |
| 06/22/1992 | CA2057825A1 Process of postrinsing conversion layers |