| Patents for C01G 49 - Compounds of iron (8,643) |
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| 10/19/1982 | US4355005 Process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 10/12/1982 | US4353882 Purification of aluminum chloride |
| 10/05/1982 | US4352717 Apparatus for production of spherical grain ferrite powder |
| 09/28/1982 | US4351814 Hydrotalcites having a hexagonal needle-like crystal structure and process for production thereof |
| 09/21/1982 | CA1132092A1 Treatment of sulfuric acid leach solution containing ferric ions in diaphragm cell |
| 09/14/1982 | US4349385 Flocculation by adding a volatile ammonium salt to an aqueous dispersion; magnetic tapes storage stability |
| 09/08/1982 | EP0059622A1 Alkali metal ferrates |
| 09/08/1982 | EP0059364A1 Orange pigments of spinel structure |
| 09/08/1982 | EP0059212A1 Magnesium aluminium spinels. |
| 09/07/1982 | US4348430 Silicon-containing gothite layer |
| 09/07/1982 | CA1130984A1 Pigments stable at high temperatures |
| 08/31/1982 | US4347291 Magnetic recording medium and preparation thereof |
| 08/18/1982 | EP0058148A2 Method of rejuvenating spent process- or leaching-liquors for metal-containing materials or ores by liquid-liquid extraction |
| 08/17/1982 | CA1129627A1 Production of chlorine and iron oxide from ferric chloride |
| 08/10/1982 | US4343687 Production of chain reactions by laser chemistry |
| 08/10/1982 | CA1129236A1 Ferrite powder magnetic toner containing resin and oxide of metal including manganese, nickel, cobalt, magnesium, copper or zinc |
| 08/03/1982 | US4342589 Process for preparing iron compound particles for use in magnetic recording |
| 07/27/1982 | US4341648 Method for manufacturing magnetic powder for high density magnetic recording |
| 07/22/1982 | WO1982002346A1 Scavenging hydrogen sulfide from hydrocarbon gases |
| 07/14/1982 | EP0056004A2 Production of carbon filaments in the presence of iron monoxide |
| 07/13/1982 | US4339425 Autoclaving |
| 06/29/1982 | US4337226 Recovery of platinum-group metals from ores |
| 06/23/1982 | EP0054364A1 Zeolites |
| 06/22/1982 | US4336242 Hard ferrite powder and process for the preparation thereof |
| 06/16/1982 | EP0053694A1 Process for reducing iron from a phosphoric-acid solution |
| 06/15/1982 | CA1125520A1 Process for precipitating iron as jarosite with a low non-ferrous metal content |
| 06/08/1982 | US4333991 Magnetic garnet film and manufacturing method therefor |
| 06/02/1982 | EP0052741A1 Process for the preparation of acicular gamma iron(III) oxide having a high coercive force |
| 06/01/1982 | US4332869 Metal-rich iron sulfide cathode material |
| 06/01/1982 | US4332687 Mixture of peroxide and ozone to oxidize and decompose complexes |
| 06/01/1982 | US4332684 Process for treating an organic phase containing iron chloride, molybdenum chloride and HCl |
| 06/01/1982 | CA1124620A1 Coating iron oxide particles for magnetic recording |
| 05/26/1982 | EP0052210A2 Method of producing fine barium ferrite particles having a high coercivity |
| 05/25/1982 | US4331637 Removal of iron |
| 05/18/1982 | US4330478 Method of oxidizing a polyvalent metal |
| 05/18/1982 | US4330382 Transition metal carbonyl or nitrosyl substitution |
| 05/18/1982 | CA1123591A1 Magnetic toner and ink |
| 05/11/1982 | US4329241 Ferrofluids |
| 05/11/1982 | CA1123373A1 Recovery of acid with electrolytic conversion of ferrous to ferric ions and extraction |
| 05/05/1982 | EP0050640A1 Process and equipment for the performance of recipitate forming reactions by using an ion-exchange auxiliary phase |
| 04/27/1982 | CA1122357A1 Transparent red iron oxide pigments and process for producing same |
| 04/21/1982 | EP0049748A1 Iron-blue pigment, process for preparing it and its use |
| 04/21/1982 | EP0049747A1 Iron-blue pigment, process for preparing it and its use |
| 04/20/1982 | CA1121982A1 Purification of aluminium chloride |
| 04/06/1982 | US4323596 Coating iron oxide particles for magnetic recording |
| 04/06/1982 | US4323464 Process for producing hydrated iron oxide having silicon and phosphorus component |
| 03/31/1982 | EP0048456A2 Process for manufacturing powder for magnetic recording medium |
| 03/24/1982 | EP0048121A1 Cathode material for electrochemical cells |
| 03/23/1982 | US4321303 Magnetic powder for magnetic recording medium |
| 03/23/1982 | US4321302 Process for producing magnetic powder having high coercive force |
| 03/23/1982 | US4321249 Process for the production of artificial iron oxide |
| 03/23/1982 | US4321244 Process for the treatment of a calcium aluminophosphate |
| 03/18/1982 | WO1982000820A1 Magnesium aluminum spinels |
| 03/16/1982 | US4319988 Puriofication of coal |
| 03/10/1982 | EP0046973A1 Process for the production of high-purity iron oxide |
| 03/09/1982 | CA1119384A1 Recovery of chlorine values |
| 03/03/1982 | EP0046504A1 Crystalline metal-silicate zeolite ZBM-30 and method of preparing it |
| 03/02/1982 | US4317804 Process for the selective removal of ferric ion from an aqueous solution containing ferric and other metal ions |
| 03/02/1982 | US4317683 Orange pigments of inverse spinel structure produced by co-calcination of compounds of iron and zinc with compounds of titanium, tin and/or silicon |
| 03/02/1982 | US4317675 Heat reduction of a doped tron oxide powder; magnetic tapes |
| 02/23/1982 | CA1118748A1 Titanium and vanadium trichloride catalysts for polymerization of olephins |
| 02/16/1982 | CA1118213A1 Process to obtain anatase mechanical concentrates |
| 02/09/1982 | CA1117720A1 Method of re-shaping magnetically weak ferrite particles |
| 02/04/1982 | WO1982000287A1 Process for preparing acicular iron oxide particles |
| 02/03/1982 | EP0045246A1 Process for preparing acicular iron oxide particles |
| 02/03/1982 | EP0045028A2 Process for the preparation of magnetic iron oxides |
| 01/27/1982 | EP0044373A1 Growth of single-crystal magnetoplumbite |
| 01/27/1982 | EP0044366A1 Distillative freezing process for separating close boiling mixtures |
| 01/20/1982 | EP0044028A1 Chlorofluor ferrate (II, III), process for its production, its use and a grinding wheel containing chlorofluor ferrate |
| 01/20/1982 | EP0043890A1 Growth of single-crystal 2PbO Fe203 |
| 01/19/1982 | US4311684 Process for producing iron oxide containing magnetite |
| 01/13/1982 | EP0043776A1 Alumina-based mixed oxide compounds, manufacturing process and use thereof |
| 01/12/1982 | US4310490 Apparatus for enriching the iron carbonyl content of a recycle gas stream |
| 01/12/1982 | CA1115932A1 Process for the preparation of pigment grade iron oxides from waste ferrous sulphate and the resulting fe.sub.2o.sub.3 pigments |
| 01/05/1982 | US4309459 Silicon dioxide |
| 01/05/1982 | US4309290 Magnetically supported particle matrix for accumulating or affecting substances dissolved or finally dispersed in liquids or gas |
| 01/05/1982 | CA1115511A1 Process for producing cobalt-containing ferromagnetic iron oxide powder |
| 01/05/1982 | CA1115489A1 Method of processing aluminous ores |
| 12/30/1981 | EP0042520A1 Process for preparing pure yellow iron oxide pigments, and their use |
| 12/29/1981 | US4308155 Rubber or plastic magnet and magnetic powder for making the same |
| 12/22/1981 | CA1114967A1 High capacity folded moving bed ion exchange apparatus and method for treating phosphoric acid |
| 12/15/1981 | US4305921 Process for producing iron oxide |
| 12/15/1981 | US4305914 Dilution |
| 12/15/1981 | US4305846 Reduction to catalyst iron oxide and chromium oxide |
| 12/15/1981 | CA1114173A1 Process for digesting bauxite |
| 12/08/1981 | US4304760 Washing with inorganic potassium salt |
| 12/08/1981 | US4304759 Process for obtaining metal oxide and SO2 -containing gases essentially free of SO3 and H2 SO4 from ferrous sulphate containing salt |
| 12/08/1981 | US4304729 Compounds formed by combining transition metal halides or oxyhalides, or aluminum chloride, with alkaline earth metal halides |
| 12/08/1981 | CA1113683A1 Rechargeable nonaqueous cell with a chalcogenide-containing electrode |
| 12/02/1981 | EP0040722A1 Process for the preparation of synthetic lepidocrocite |
| 12/01/1981 | US4303699 For use with high density recording |
| 12/01/1981 | CA1113226A1 Method of producing at least one of ferro-lime and ferro-dolime |
| 12/01/1981 | CA1113225A1 Recovery of chlorine values |
| 11/18/1981 | EP0040118A2 Ferrimagnetic material having a high thermal stability and a weak line width of gyroresonance for use at very high frequences |
| 11/18/1981 | EP0040016A1 Zeolite Nu-3 |
| 11/18/1981 | EP0039866A2 Process for the dissociation of iron sulfate and sulfuric acid, and application of rubber scraps thereto |
| 11/18/1981 | EP0039773A1 Method of producing barium-ferrite series powder |
| 11/17/1981 | CA1112433A1 Anti-corrosive pigment and anti-corrosive aqueous paint |
| 11/11/1981 | EP0039463A1 Magnetic garnet film and manufacturing method therefor |
| 11/10/1981 | US4299635 Upgraded by addition of silica or silicon containing material |