| Patents for C01G 49 - Compounds of iron (8,643) |
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| 01/30/1979 | US4137293 By magnetic separation, after oxidation and neutralization |
| 01/30/1979 | CA1047243A1 Porous fe304 drilling mud additive |
| 01/23/1979 | US4136158 Production of acicular magnetic iron oxides |
| 01/23/1979 | US4136049 Process for treating acicular magnetite containing co to stabilize the magnetic properties thereof |
| 01/10/1979 | EP0000197A1 Rechargeable non-aqueous cell with a chalcogenide-containing electrode, a method for preparing the chalcogenide compound and a method for the preparation of the cell |
| 01/09/1979 | US4133866 Process for the selective separation of the bound sodium content of red mud |
| 01/09/1979 | US4133865 Multistage; from the metal sulfide and ammonium sulfate; preventing agglomeration |
| 01/02/1979 | US4132619 Borided cobalt-iron-nickel mixed oxide spinel |
| 12/19/1978 | CA1044469A1 Production of bauxite and aluminium chloride of low iron content |
| 12/12/1978 | US4129454 Iron oxide based pigment and process for preparing such a pigment |
| 12/05/1978 | CA1043576A1 Two stage leaching of limonitic ore and sea nodules |
| 11/14/1978 | US4125687 Rechargeable nonaqueous cell with chalcogenide electrode |
| 11/14/1978 | US4125588 Nickel and magnesia recovery from laterites by low temperature self-sulfation |
| 11/14/1978 | US4125474 Process for producing ferrogmagnetic iron oxide powder comprising a pre-treatment with a reducing agent |
| 10/31/1978 | US4123501 Oxidation of metallic iron to black oxide pigments |
| 10/31/1978 | CA1041304A1 Process for recovering valuable metals from sulfate solutions |
| 10/24/1978 | CA1041026A1 Process for the recovery of carbonyls and carbon monoxide from carbonyl process gases |
| 10/24/1978 | CA1040882A1 Method for the manufacture of soil modifiers from waste materials of the manufacture of titanium dioxide |
| 10/24/1978 | CA1040867A1 Separation of iron from zinc solutions or slurries |
| 10/17/1978 | US4120941 Process for the oxidation of halides |
| 10/17/1978 | US4120807 Process for producing hexagonal-system ferrite powder |
| 10/17/1978 | US4120806 Hexagonal-system ferrite powder, composite plastic-ferrite magnet comprising same and process for production thereof |
| 10/10/1978 | US4119536 Method of disposing of a ferrous-ion containing acidic aqueous waste by forming polycrystalline iron compound particles |
| 10/03/1978 | CA1039510A1 Desulfurization iron oxide pellets |
| 09/26/1978 | US4116752 Thermal reaction of ferric oxide, hydroxide, or oxyhydroxide with strontium or barium compound in presence of small amount of metal chloride flux |
| 09/26/1978 | CA1039050A1 Magnetic iron oxides with improved orientability and a process for their production |
| 09/26/1978 | CA1039049A1 Magnetic pigments with improved orientability and a process for their production |
| 09/19/1978 | US4115106 Method for producing metallic oxide compounds |
| 09/19/1978 | CA1038630A1 Ilmenite beneficiation with fec13 |
| 09/12/1978 | US4113588 From pickling metallic materials |
| 09/12/1978 | US4113521 Process for producing magnetic particles by vacuum evaporation of iron with collection on a magnetized surface |
| 09/05/1978 | US4112063 Continuous production of iron oxide hydroxide |
| 09/05/1978 | US4112047 Pretreatment system for goethitic bauxites |
| 08/29/1978 | US4110399 Process for the extraction of alumina from aluminum-containing silicates |
| 08/29/1978 | CA1037261A1 Oxidation-leaching of chalcopyrite |
| 08/22/1978 | US4108787 Neutralizing a ferrous salt to form ferrous hydroxide, oxidizing |
| 08/15/1978 | US4107267 Concentration, oxygen, hydrogen combustion gases, iron oxide |
| 08/08/1978 | US4105747 Method for dehydrating metal chlorides |
| 07/25/1978 | US4102951 Dehydration, dexomposition |
| 06/27/1978 | US4097574 Process for producing a synthetic rutile from ilmentite |
| 06/20/1978 | US4096292 Process for preparing ferrimagnetic acicular ferric oxide |
| 06/13/1978 | US4094954 Oxidation of ferric chloride from selective chlorination of titaniferous material |
| 05/30/1978 | US4092406 Calcium carbonate containing stone, iron pellets, calcining |
| 05/30/1978 | US4092401 Process for reutilization of iron chlorides in aqueous solution |
| 05/23/1978 | US4090888 Inorganic compound of copper, nickel, aluminum, chromium, titanium, zirconium, vanadium |
| 04/25/1978 | US4086321 Producing pure iron oxides |
| 04/25/1978 | US4086174 Cobalt modified acicular γ ferric oxide and process for preparing the same |
| 04/18/1978 | US4085190 Production of rutile from ilmenite |
| 04/18/1978 | US4084545 Operating method |
| 04/11/1978 | US4083923 From clays bauxite, and laterite, carbo-chlorination |
| 04/11/1978 | US4083693 Hydrochloric acid |
| 04/04/1978 | US4082832 Treatment of raw materials containing titanium |
| 03/07/1978 | US4077832 Epitaxial growth of bismuth rare earth iron garnet from a flux of bismuth oxide and alkali metal oxide |
| 02/28/1978 | US4076796 Carrying out endothermic processes in fast fluidized reactor with conventionally fluidized holding reactor |
| 02/14/1978 | US4073878 Method for producing yellow hydrated ferric oxide |
| 02/14/1978 | US4073874 Oxidation |
| 01/31/1978 | US4071610 Manufacture of gamma-iron(III) oxide |
| 01/31/1978 | US4071588 Process for production of magnetite spheres with an arc heater |
| 01/17/1978 | US4069164 Process for producing ferromagnetic powder |
| 01/03/1978 | US4066748 Continuous process for producing an aqueous solution of ferric chloride |
| 01/03/1978 | US4066565 Process for producing cobalt- and iron-containing ferromagnetic powder |
| 01/03/1978 | US4066564 Process for producing cobalt- and iron-containing ferromagnetic powder by heat-treatment in the presence of an oxidizing agent |
| 01/03/1978 | US4066424 Selectively recovering metal chlorides from gaseous effluent |
| 12/27/1977 | US4065542 Two stage leaching of limonitic ore and sea nodules |
| 12/27/1977 | US4065294 Energy conserving process for purifying iron oxide |
| 12/13/1977 | US4062924 Reductive leaching of limonitic ores with hydrogen sulfide |
| 12/13/1977 | US4062920 Process for producing lithium-containing ferrimagnetic materials |
| 12/06/1977 | US4061727 Multistage from an iron salt and alkali metal hydroxide |
| 12/06/1977 | US4061726 Manufacture of acicular γ-iron(III) oxide |
| 12/06/1977 | US4061725 Manufacture of gamma-iron(III) oxide |
| 11/29/1977 | US4060596 Method of making goethite powder |
| 11/29/1977 | US4060584 Process for recovery of iron oxide and chlorine from dust produced in chlorination of titaniferous ores |
| 11/22/1977 | US4059716 Treating with an amine salt or quaternary ammonium compound |
| 11/22/1977 | US4059673 Production of bauxite and aluminium chloride of low iron content |
| 11/15/1977 | US4058592 Preparation of sub-micron metal oxide powders from chloride-containing compounds |
| 10/25/1977 | US4055631 Production of iron sulfate monohydrate |
| 10/25/1977 | US4055621 Chlorination, fluidization, roasting |
| 10/18/1977 | US4054643 Manufacture of γ-Fe2 O3 |
| 10/18/1977 | US4054639 Narrow particle size dispersion |
| 10/11/1977 | US4053325 Heat stable iron oxides |
| 10/04/1977 | US4052326 Manufacture of γ-iron(III) oxide |
| 09/20/1977 | US4049887 Electrochemical cells with cathode-active materials of layered compounds |
| 09/20/1977 | US4049788 Thermal transformation of metal chlorides to oxides in a fluidized bed |
| 09/06/1977 | US4046854 Recovery of titanium tetrachloride |
| 09/06/1977 | US4046853 From iron containing titaniferous ore |
| 08/30/1977 | US4045205 Method for the manufacture of soil modifiers from waste material of the manufacture of titanium dioxide |
| 08/16/1977 | US4042664 Method for separating metal constituents from ocean floor nodules |
| 08/02/1977 | US4039651 Process for closed-cycle thermochemical production of hydrogen and oxygen from water |
| 07/19/1977 | US4036941 Preparation of ferric sulfate solutions |
| 07/05/1977 | US4033891 Magnetic particle powder of acicular ferric oxide used for magnetic recording material and a process for producing the same |
| 07/05/1977 | US4033873 Filtration apparatus and pressure seal |
| 06/28/1977 | US4032613 Removal of iron from aluminum nitrate |
| 06/07/1977 | US4028463 Recovery of manganese values |
| 05/31/1977 | US4027004 Manganese, zinc, magnesium, aluminum, gallium, iron, cobalt, nickel, or chromium rhenium oxide |
| 05/31/1977 | US4026999 Production of iron (II) chloride and chlorine from ferric chloride |
| 05/24/1977 | US4025611 Ferrous hydroxide suspension |
| 05/24/1977 | US4025449 Process to produce barium and strontium ferrite |
| 05/17/1977 | US4024232 Method of preparing magnetite having a controlled particle size, starting from ferrous sulphate solutions |
| 04/19/1977 | US4018882 Reducing a-iron oxide to magnetite then oxidizing |
| 04/05/1977 | US4016238 Process for the obtention of alumina and phosphate values by the alkaline decomposition of silica-containing aluminum phosphate ores |