| Patents for C01G 49 - Compounds of iron (8,643) |
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| 10/26/1983 | EP0092108A2 Process for the treatment of acid waste water containing aluminium and iron |
| 10/25/1983 | US4411874 Detoxification of spent antimony halide catalyst and recovery of antimony values |
| 10/25/1983 | US4411807 Dry process for the production of hexagonal-system ferrite |
| 10/19/1983 | EP0091654A2 Electrophotographic ferrite carrier |
| 10/19/1983 | EP0091640A2 Process for the preparation of ferrites from iron (II) sulfate |
| 10/18/1983 | US4410443 Method of dissolving iron oxide-chrome oxide spent shift catalysts to prepare a nitrate solution suitable for use in preparing a new catalyst |
| 10/05/1983 | EP0090515A2 Treatment of solutions to facilitate the removal of ferric iron therefrom |
| 10/05/1983 | EP0090241A1 Thermostable iron oxide pigments |
| 10/05/1983 | EP0090119A2 Selectively stripping iron ions from an organic solvent |
| 10/04/1983 | US4407721 Smooth magnetic tapes or films |
| 10/04/1983 | CA1154572A1 Method and apparatus for enriching the iron carbonyl content of a recycle gas stream |
| 10/04/1983 | CA1154559A1 Orange pigments of spinel structure |
| 09/28/1983 | EP0089353A1 Method for the selective chlorination of metal oxide mixtures of natural or synthetic origine. |
| 09/21/1983 | EP0088835A1 Separation of high grade magnetite from fly ash |
| 09/20/1983 | US4405573 Process for preparing potassium ferrate (K2 FeO4) |
| 09/15/1983 | WO1983003094A1 Oxide-containing magnetic material capable of being sintered at low temperatures |
| 09/14/1983 | EP0088228A2 Garnet film for ion-implanted magnetic bubble device |
| 09/13/1983 | US4404254 Production of lamellar iron oxide pigments |
| 09/07/1983 | EP0087578A1 Acicular ferrimagnetic iron oxide and process for its production |
| 09/06/1983 | US4403060 Plastic colored with transparent iron oxide spinels |
| 08/30/1983 | US4401643 Preparation of finely divided barium ferrite of high coercivity |
| 08/23/1983 | US4400432 Silicates, borates, vanadates, molybdates, tungstates |
| 08/23/1983 | CA1152337A1 Leaching of sulphidic mattes containing non-ferrous metals and iron |
| 08/17/1983 | EP0086005A1 Magnetic head |
| 08/16/1983 | US4399026 Process for hydrotreating heavy hydrocarbon oils, catalysts therefor, and a method of preparing such catalysts |
| 08/10/1983 | EP0085666A2 Method of processing sulfuric acid having a content of metal sulfates |
| 08/09/1983 | US4397912 Computers; small diameters; stability during temperature variationsa |
| 08/09/1983 | US4397825 Zeolites Nu-6(1) and Nu-6(2) |
| 08/09/1983 | CA1151429A1 Process for beneficiation of oxidic ores |
| 08/02/1983 | US4396596 Ferrous salt, alkaline solution |
| 07/19/1983 | US4394360 Process for reducing iron in phosphoric acid solution |
| 07/12/1983 | US4392991 Vpor deposition on metal oxide support |
| 07/12/1983 | US4392980 Ion exchangers, spinel precursors |
| 07/12/1983 | CA1149709A1 Magneto-optic bi.sub.1 lu.sub.2 fe.sub.5 o in12 xx crystals |
| 07/12/1983 | CA1149582A1 Synthetic rhombohedrol magnetite pigment |
| 07/05/1983 | CA1149178A1 Precipitation of metal values from organic media |
| 06/29/1983 | EP0082590A1 Process for preparing potassium ferrate (K2FeO4) |
| 06/28/1983 | CA1148923A1 Process for hydrotreating heavy hydrocarbon oils, catalysts therefor, and a method of preparing such catalysts |
| 05/31/1983 | US4386057 Reacting magnetic fly ash with alkali to precipitate aluminosilicate hydrate salts soluble with mineral acid |
| 05/31/1983 | US4385964 By addition of titanium tetrachloride |
| 05/24/1983 | US4385045 Process for producing alkali metal ferrates |
| 05/18/1983 | EP0078950A2 Process for the preparation of acicular, ferrimagnetic iron oxides |
| 05/17/1983 | US4383980 Process for extracting tungsten and molybdenum values from solution |
| 05/11/1983 | WO1983001612A1 Chlorination of an aluminous material |
| 05/10/1983 | US4382982 Process for protecting magnetic particles with chromium oxide |
| 05/10/1983 | US4382916 Method of preparing hydrochloric acid and high purity ferrous sulfate hydrate crystals from hydrochloric acid waste pickle liquor |
| 05/10/1983 | US4382822 Synthetic rhombohedral magnetite pigment |
| 04/29/1983 | EP0067812A4 Scavenging hydrogen sulfide from hydrocarbon gases. |
| 04/14/1983 | WO1983001249A1 Method for the selective chlorination of metal oxide mixtures of natural or synthetic origine |
| 04/12/1983 | CA1144341A1 Process for the separation of ferrous, aluminous and manganous contaminations from hydrochloric magnesium chloride solutions |
| 04/05/1983 | US4379183 Method of producing cobalt-modified magnetic particles |
| 04/05/1983 | US4379021 Method of manufacturing single crystals |
| 04/05/1983 | US4378995 Iron blue pigment, process for making the same and use |
| 04/05/1983 | CA1144142A1 Process for the preparation of crystalline silicates |
| 03/29/1983 | US4378252 Magnetic separation to improve purity of iron oxide pigments |
| 03/23/1983 | EP0074563A2 Zinc ferrite pigments of poor halogen content, process for manufacturing them and their use |
| 03/23/1983 | EP0074443A1 Pigments stable at high temperatures |
| 03/23/1983 | EP0074442A1 Yellow pigments stable at high temperatures |
| 03/22/1983 | CA1143143A1 Production of ferrimagnetic iron oxide |
| 03/15/1983 | US4376714 Process for preparing acicular iron oxide particles |
| 03/15/1983 | US4376656 Heat resistant yellow iron oxide pigment |
| 03/15/1983 | US4376653 Process for the production of nickel, high-purity magnesium oxide and cement |
| 03/15/1983 | EP0059212A4 Magnesium aluminium spinels. |
| 03/15/1983 | EP0050640A4 Process and equipment for the performance of recipitate forming reactions by using an ion-exchange auxiliary phase. |
| 03/01/1983 | CA1141967A1 Process for treating an organic phase containing iron chloride, molybdenum chloride and hc1 |
| 03/01/1983 | CA1141966A1 Process for separating trivalent iron from an aqueous chloride solution |
| 02/23/1983 | EP0072437A2 Process for the preparation of finely divided ferrite powder |
| 02/23/1983 | EP0072436A2 Process for the preparation of finely divided ferrite powder |
| 02/22/1983 | US4374805 Reductants for reducing metals in acid media |
| 02/22/1983 | US4374677 Preparation of improved heat stable yellow iron oxide pigments |
| 02/22/1983 | US4374676 Heat stable yellow iron oxides containing antimony |
| 02/08/1983 | US4372930 Zeolite Nu-3 |
| 02/08/1983 | US4372865 Carbonate/hydroxide coprecipitation process |
| 02/01/1983 | US4371628 Process for the preparation of aromatic hydrocarbons using crystalline silicates as catalyst |
| 02/01/1983 | US4371567 High coercivity, cobalt-doped ferrimagnetic iron oxide particulates |
| 02/01/1983 | CA1140303A1 Production of a yellow iron oxide pigment |
| 01/25/1983 | US4370240 Removal of iron compounds from organic process streams |
| 01/25/1983 | US4370148 Chlorofluoroferrate(II,III), a process for its manufacture, its use and a grinding wheel containing chlorofluoroferrate(II,III) |
| 01/11/1983 | US4368075 Iron blue pigment, process for making the same and use |
| 01/05/1983 | EP0068311A1 Platelet-shaped pigments based on iron oxide, their preparation and use |
| 01/04/1983 | US4367214 Manufacture of acicular ferrimagnetic iron oxide |
| 01/04/1983 | US4367164 Catalysts for hydrotreating heavy hydrocarbon oils and a method of preparing such catalysts |
| 01/04/1983 | US4367163 Silica-clay complexes |
| 01/04/1983 | CA1138649A1 Process for recovering aluminum and other metals from fly ash |
| 12/29/1982 | EP0067812A1 Scavenging hydrogen sulfide from hydrocarbon gases. |
| 12/28/1982 | US4366129 Process for producing alumina and ferric oxide from aluminium carriers with high iron and silicon content |
| 12/28/1982 | US4366127 Hydrometallurgical process for the recovery of lead, silver and gold, as well as zinc, from impure jarosite residues of an electrolytic zinc process |
| 12/22/1982 | EP0067764A1 Process and installation for fluidizing iron sulfate heptahydrate, and product obtained |
| 12/07/1982 | US4362767 Magnetic thin film and method of making it |
| 12/07/1982 | US4362708 Preparation of acicular gamma-iron(III) oxide of high coercive force |
| 12/07/1982 | US4362702 Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 12/07/1982 | US4362643 Coagulants, water treatment |
| 11/24/1982 | EP0065412A1 Process for conversion of sulphuric acid waste (for example from titanium dioxide) into useful products |
| 11/23/1982 | US4360445 Oxygen stabilized zirconium-vanadium-iron alloy |
| 11/16/1982 | US4359212 Apparatus for reducing finely divided iron oxide material |
| 11/16/1982 | CA1135479A1 Pigments stable at high temperatures |
| 11/09/1982 | US4358431 Production of magnetic iron oxides |
| 11/09/1982 | CA1135081A1 Process for the preparation of powdered ferrites |
| 10/26/1982 | CA1134149A1 Moving bed chlorination of bauxite and ilmenite |
| 10/19/1982 | US4355008 Chlorination process |