| Patents for C23G 1 - Cleaning or pickling metallic material with solutions or molten salts (8,361) |
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| 11/04/1981 | EP0039193A1 Metal cleaning composition |
| 10/27/1981 | US4297257 Metal stripping composition and method |
| 09/29/1981 | US4292148 Post-treatment of etched aluminum capacitor foil |
| 09/16/1981 | EP0035804A1 Process for regenerating pickling solutions containing ZrF6 |
| 09/16/1981 | EP0035515A1 Purification process for spent pickling baths |
| 09/15/1981 | US4289639 Method and composition for removing sulfide-containing scale from metal surfaces |
| 09/15/1981 | US4289576 Dissolving in aqueous acidic solution containing a cyanide, cyanate, thiocyanate, or ferricyanide |
| 09/15/1981 | US4289541 Abrasive blasting with corundum in a liquid, rinsing |
| 09/09/1981 | EP0035241A1 Method for the activation of titanium surfaces |
| 09/02/1981 | EP0034733A1 Method for treating a tube of a zirconium-based alloy when applying a protective layer |
| 09/01/1981 | US4287002 By treating the corroded surfaces containing chromium (iii) oxide and other metal oxides with ozone |
| 08/25/1981 | US4285783 Coating for metal shelving and method of applying same |
| 08/25/1981 | CA1107480A1 Acid and zirconium content extraction process from pickling solutions |
| 08/18/1981 | USRE30714 Dissolving in chelating solution |
| 08/18/1981 | US4284434 Process for spray cleaning of metal surfaces |
| 07/29/1981 | EP0032886A1 A method of regenerating pickling solutions |
| 07/28/1981 | US4281037 Cleaning and priming composition containing titanium acetylacetonate and method |
| 07/23/1981 | WO1981002026A1 A method of regenerating pickling bath solutions |
| 07/22/1981 | EP0032416A2 Descaling process |
| 07/21/1981 | US4279768 Synergistic blend of ghelant, polyacrylamide conditioner and a gluconate |
| 07/08/1981 | EP0031440A1 Process for removing moulding sand remainders on cast parts |
| 07/07/1981 | US4277289 Process for removing titaniferous and silico-aluminous incrustations from surfaces |
| 07/01/1981 | EP0031103A1 Method for the pretreatment of metal surfaces prior to phosphatizing |
| 06/30/1981 | US4276185 Minimal evolution of hydrogen sulfide |
| 06/16/1981 | US4273591 Fused salt baths, spraying solvent, vaporizing, condensing in jacket |
| 06/02/1981 | US4270957 Method for cleaning aluminum articles |
| 05/27/1981 | EP0029418A1 A method of acid pickling iron and iron alloys and a composition for carrying out the method |
| 05/20/1981 | EP0028674A1 Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals |
| 05/14/1981 | WO1981001298A1 A method of acid pickling iron and iron alloys and a composition for carrying out the method |
| 05/06/1981 | EP0028153A1 Electrical heating strip |
| 05/05/1981 | US4265780 Phosphoric acid esters of myoinositol |
| 05/05/1981 | US4265700 Method of separating a solid and a liquid phase of a mass |
| 04/29/1981 | EP0027574A1 Method of de-scaling the surface of metallic materials |
| 04/28/1981 | US4264768 Di-quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
| 04/28/1981 | US4264767 α-1,4-Thiazine alkanephosphonic acids |
| 04/28/1981 | US4264463 Process for removing calcium oxalate scale |
| 04/28/1981 | US4264418 Method for detersifying and oxide coating removal |
| 04/28/1981 | CA1099902A1 Process for treating waste acids and apparatus therefor |
| 04/21/1981 | US4263342 Method of manufacturing mercury contact on a beryllium base |
| 04/15/1981 | EP0027083A1 Process for cleaning vehicles and composition therefor |
| 03/31/1981 | US4259483 Quaternary ammonium salts of α-1,4-thiazine alkanephosphonic acids |
| 03/25/1981 | EP0025624A1 Process for inhibiting the corrosion of a metallic installation upon contact with an acidic bath |
| 03/19/1981 | WO1981000728A1 Purification process for spent pickling baths |
| 03/17/1981 | US4256602 Fluoroborate complex composition and method for cleaning aluminum at low temperatures |
| 03/17/1981 | US4256601 Polynuclear phenol alkoxylate nonionic surfactant |
| 03/10/1981 | US4255407 Method for the regeneration of pickling acids |
| 03/10/1981 | US4255239 Conditioning with urea or thiosemicarbazide before electrodeposition |
| 03/10/1981 | CA1097189A1 Method of cleaning swarf |
| 03/03/1981 | US4254030 Fluorosulphonyl oxafluoroalkanes fluorosulphonyl olefines and processes for their preparation |
| 02/24/1981 | US4252743 Corrosion resistance; pickling, acidification processes, and brine systems |
| 02/24/1981 | US4252602 Apparatus for recovering nitric acid and hydrofluoric acid from solutions |
| 02/17/1981 | CA1095816A1 Formulation for the dissolution of gypsum |
| 02/10/1981 | US4250048 Metal oxide remover containing a strong mineral acid, chelating agent and a basic ammonia derivative |
| 02/03/1981 | US4248851 Obtained from the reaction of waste hydrogen chloride pickle liquor and iron oxide |
| 02/03/1981 | US4248796 Quaternary alkynoxymethyl amines |
| 01/28/1981 | EP0023184A1 Process and installation for the thermochemical pickling of articles of stainless steel |
| 01/27/1981 | CA1094430A1 Tannin treatment of aluminum with a fluoride cleaner |
| 01/13/1981 | US4244886 Fluorosulphonyl oxafluoroalkanes and their derivatives |
| 01/13/1981 | US4244792 Aqueous solution of nitric acid and oxalic acid |
| 12/16/1980 | US4239661 Hydroxyalkyl trialkylammonium hydroxide |
| 12/10/1980 | EP0019752A1 Process for pickling metals |
| 12/10/1980 | EP0019678A1 Process for the treatment of rinse water of metal pieces having undergone a pickling by a strong acid |
| 12/09/1980 | US4238329 Coating filter with mixture of diatomaceous earth; adding mixture upstream; complexing |
| 12/09/1980 | US4238328 Process for removing heavy-metal ions from aqueous solutions |
| 11/25/1980 | CA1090143A1 Method of recovering zinc from a material containing zinc and iron |
| 10/28/1980 | CA1088457A1 Treating metallic article in molten oxidizing salt before immersion in electrolyte |
| 10/01/1980 | EP0016515A1 Method of cleaning fouled heat exchangers and other chemical processing equipment |
| 09/30/1980 | CA1086769A1 Fluorosulphonyl oxafluoroalkanes, their derivatives, fluorosulphonyl olefines, their copolymers and processes for their preparation |
| 09/17/1980 | EP0015737A1 Process for the regeneration of electroless plating baths |
| 09/16/1980 | US4222886 Pumpable pipe cleaning composition |
| 09/16/1980 | CA1085809A1 Spill control composition and use thereof |
| 09/16/1980 | CA1085704A1 Acid cleaner and process for disposal thereof |
| 09/02/1980 | US4220550 Composition and method for removing sulfide-containing scale from metal surfaces |
| 08/12/1980 | US4217329 Corrosion inhibitors |
| 08/12/1980 | US4217192 Redox systems, nitric acid |
| 07/23/1980 | EP0013462A1 Dithiocarbamate/sulfonium salt corrosion inhibitor composition and its use in acidic cleaning solutions |
| 07/23/1980 | EP0013310A1 Process for the manufacture of a photo-resist image |
| 07/22/1980 | CA1082376A1 Treatment of liquids containing complexed heavy metals and complexing agents |
| 07/08/1980 | CA1081096A1 Passivating metal surfaces |
| 07/01/1980 | US4210552 Sulfonium compounds as corrosion inhibitors in aqueous acidic cleaning solutions |
| 07/01/1980 | US4210502 Process for recovery of waste H2 SO4 and HCl |
| 06/25/1980 | EP0012478A2 Method for removing sulfide-containing scale from metal surfaces |
| 06/24/1980 | US4209418 Gelatin benzimidazole blends as inhibitors for carboxylic acids |
| 06/17/1980 | CA1079488A1 Treatment method of raw materials containing titanium |
| 06/03/1980 | US4206233 Microbiocidal quaternaries of halogen derivatives of alkynoxymethyl amines |
| 05/27/1980 | USRE30283 Sulfonium compounds as corrosion inhibitors in aqueous acidic cleaning solutions |
| 05/06/1980 | US4201688 Diethylenetriaminopenta(methylenephosphonic acid) and aminotri7methylenephosphonic acid) or their alkali metal salts |
| 04/29/1980 | US4200634 Water treatment |
| 04/29/1980 | US4200633 Thioether containing quaternary ammonium derivatives of 1,4-thiazines as microbiocides |
| 04/29/1980 | US4200612 Process for recovering acids and zirconium contained in pickling solutions |
| 04/15/1980 | CA1075570A1 Method of treating surface of copper and its alloys |
| 04/08/1980 | US4197139 Vaporization and circulation of water, heat exchanging |
| 04/02/1980 | EP0009247A1 Corrosion inhibitors for acidic solutions |
| 03/11/1980 | CA1073566A1 Process for treating an acid waste liquid |
| 03/04/1980 | US4191588 Solution of an alkyl aluminum halide and hydrocarbon to remove suldge containing a cuprous halide |
| 02/26/1980 | US4190727 Dithioles |
| 02/26/1980 | US4190463 Method of removing iron oxide deposits from heat transfer surfaces |
| 02/26/1980 | CA1072425A1 Continuous rolled rod cooling and cleaning |
| 02/12/1980 | US4188359 Corrosion inhibition |
| 02/05/1980 | US4187277 Process of inhibiting corrosion with quaternaries of halogen derivatives of alkynoxymethyl amines |