| Patents for C01G 49 - Compounds of iron (8,643) |
|---|
| 09/09/1980 | US4221766 Minimizing soluble iron concentration in a plant effluent |
| 09/09/1980 | CA1085137A1 Process for the production of aluminum chloride and related products |
| 09/03/1980 | EP0014889A1 Method for the preparation of acicular ferromagnetic iron particles |
| 09/02/1980 | US4220629 Chlorination of ores with catalyzed metal chlorides |
| 09/02/1980 | CA1084669A1 Process for producing a synthetic rutile from ilmenite |
| 08/20/1980 | EP0014557A1 Process for precipitating metal values from organic media |
| 08/20/1980 | EP0014382A2 Iron oxide pigments in the form of platelets, process for their preparation and their use |
| 08/20/1980 | EP0014363A1 Cobalt-doped ferrimagnetic iron oxides and process for producing them |
| 08/20/1980 | EP0014302A1 Process for producing needle-shaped highly coercive gamma-iron(III) oxide |
| 08/19/1980 | US4218430 Impregnation with fugitive organic material |
| 08/06/1980 | EP0014189A1 Process for the working up of ferrous II sulphate heptahydrate |
| 08/05/1980 | CA1082886A1 Process for recovery of iron oxide and chlorine from dust produced in chlorination of titaniferous ores |
| 08/05/1980 | CA1082884A1 Process for the extraction of alumina from aluminum- containing silicates |
| 07/29/1980 | US4215158 Magnetic recording medium and process for producing the same |
| 07/22/1980 | US4213959 Manufacture of acicular, ferrimagnetic iron oxide |
| 07/09/1980 | EP0013009A1 Magnetic toner and ink |
| 07/08/1980 | US4211753 Iron hydroxide ammonium molybdate complex |
| 07/01/1980 | US4210502 Process for recovery of waste H2 SO4 and HCl |
| 06/24/1980 | US4209412 Containing zinc and phosphorus; magnetic acicular particles |
| 06/17/1980 | CA1079489A1 Continuous production of iron oxide hydroxide |
| 06/17/1980 | CA1079488A1 Treatment method of raw materials containing titanium |
| 06/10/1980 | US4207201 Process for the manufacture of an aqueous iron (III)-chloride-sulfate solution |
| 06/10/1980 | CA1079032A1 Method of carrying out endothermic processes |
| 05/27/1980 | CA1078137A1 Process for the oxydation of ferrous sulphate in aqueous sulphuric solution |
| 05/20/1980 | CA1077915A1 Method and composition for removing sulfur dioxide from flue gases |
| 05/14/1980 | EP0010732A1 Magnetic toner powder |
| 05/13/1980 | US4202871 Production of acicular ferric oxide |
| 05/13/1980 | US4202864 Geothermal |
| 05/06/1980 | US4201827 Magnetically supported particle matrix for accumulating or affecting substances dissolved or finely dispersed in a liquid or gas |
| 05/06/1980 | US4201762 Transparent red iron oxide pigments and process for producing same |
| 05/06/1980 | US4201761 Process for making iron oxide of controlled particle size |
| 05/06/1980 | CA1076774A1 Process of producing sulfuric acid from waste acid and iron sulfate |
| 04/29/1980 | US4200680 Process for preparing magnetic iron oxide and magnetic iron oxide produced thereby |
| 04/29/1980 | CA1076406A1 Production of ferrite electrostatographic carrier materials having improved properties |
| 03/25/1980 | US4195065 Leaching nickeliferous oxide ores |
| 03/25/1980 | US4194992 Method for the polymerization of olefines and means suitable thereto |
| 03/18/1980 | US4193970 Process for the precipitation of iron as jarosite |
| 03/11/1980 | US4192852 Process for precipitating iron as jarosite with a low non-ferrous metal content |
| 03/11/1980 | CA1073566A1 Process for treating an acid waste liquid |
| 03/05/1980 | EP0008413A1 Process for producing anhydrous alkali-metal-chloroferrates (II,III) and their use |
| 03/04/1980 | US4191336 Slurrying, magnetic separation, crushing, drying |
| 02/26/1980 | CA1072299A1 Production of alumina from ores |
| 02/19/1980 | CA1071844A1 Method for producing yellow hydrated ferric oxide |
| 02/19/1980 | CA1071837A1 Process for preparing metallic sulphates |
| 02/12/1980 | US4188302 Manufacture of acicular cobalt-modified magnetic iron oxide |
| 02/12/1980 | CA1071412A1 Calcination of basic ferric sulphates |
| 02/06/1980 | EP0007764A1 Stabilized ferromagnetic chromium dioxide and a process for preparing it |
| 01/08/1980 | CA1069276A1 Operating method |
| 12/04/1979 | US4177119 Process for recovery of waste H2 SO4 and HCl |
| 11/27/1979 | US4176172 Particle gamma ferric oxide |
| 11/20/1979 | CA1066768A1 Electrochemical cell with cathode-active materials of layered compounds |
| 11/20/1979 | CA1066483A1 Process for production of finely divided magnetite particles |
| 11/15/1979 | WO1979000920A1 High capacity folded moving bed ion exchange apparatus and method for treating phosphoric acid and the like |
| 11/13/1979 | US4174381 Multistage recirculating fluidixed oxidationg catalyst bed |
| 11/06/1979 | US4173624 Recovery of sodium sulphate in production of iron oxide black pigments |
| 10/31/1979 | EP0005054A2 Process for the preparation of iron oxide and compositions containing iron oxide |
| 10/30/1979 | US4172879 Ferric iron removal from aluminum fluoride solutions |
| 10/30/1979 | US4172785 Process for the separation of Cu++ -ions from sewage, waste water and aqueous solutions |
| 10/30/1979 | US4172784 Process for the separation of cadmium (Cd++)-ions from sewage, waste water and aqueous solutions |
| 10/30/1979 | CA1065120A1 Manufacture of ferric sulphate |
| 10/23/1979 | CA1065068A1 Method of selectively precipitating metals from solutions |
| 10/17/1979 | EP0004792A2 Moving bed ion exchange method |
| 10/17/1979 | EP0004652A2 Process for the preparation of iron oxide for magnetic signal registration |
| 10/17/1979 | EP0004643A2 Active anticorrosion pigments containing calcium oxide, aluminium oxide and iron oxide, process for their preparation and their use |
| 10/17/1979 | EP0004568A1 Process for recovering sulphuric acid from natural gypsum or phospho-gypsum |
| 10/16/1979 | CA1064223A1 Method of making goethite powder |
| 10/09/1979 | CA1063810A1 Process and apparatus for treatment of a sulfur containing material |
| 10/09/1979 | CA1063774A1 Fe3o4 fabrication process |
| 09/25/1979 | US4169131 Process for recovering caustic alkali from spent alkali liquor |
| 09/18/1979 | US4168297 Recovery of TiO2 from ilmenite-type ore using an organophosphoric acid extractant for impurity iron removal |
| 09/18/1979 | CA1062657A1 EPITAXIAL PROCESS OF FORMING FERRITE, FE3O4 AND .gamma. FE2O3 THIN FILMS ON SPECIAL MATERIALS |
| 09/05/1979 | EP0003824A2 Process for the preparation of iron oxide pigments and sodium sulphate |
| 08/28/1979 | US4166101 Process of the preparation of a hydrogen-rich gas and the catalyst used in the process |
| 08/28/1979 | US4166098 Solvent extraction |
| 08/28/1979 | US4166045 Purification of combustion catalysts and solid propellant compositions containing the same |
| 08/22/1979 | EP0003710A1 Process for preparing ferrite powders and powders or permanent magnets so produced |
| 08/07/1979 | CA1059770A1 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 07/31/1979 | US4163047 Process for producing sulfuric acid from waste acid and iron sulfate |
| 07/25/1979 | EP0003100A2 Ferrimagnetic iron oxide and method of manufacturing the same |
| 07/24/1979 | US4162283 Method of melting magnetically weak particles of arbitrary shape into substantially spherically-shaped globules |
| 07/03/1979 | US4159962 Method of preparing layered chalcogenides |
| 06/26/1979 | US4159310 Process for recovering aluminum and other metal values from fly ash |
| 06/12/1979 | CA1056150A1 Magnetic fe oxide and process for producing the same |
| 05/08/1979 | US4153472 Ferrous sulphate, an organic base and an organic aromatic nitro-derivative |
| 05/08/1979 | CA1053876A1 Method and means of growing coarse gypsum and magnetite |
| 04/18/1979 | EP0001435A1 Process for the production of non-agglomerated gamma ferric (III) oxide |
| 04/17/1979 | US4150095 Recovering magnetite and ammonium sulphate from ammonium jarosite |
| 03/20/1979 | US4145301 Process for preparing magnetic oxides |
| 03/20/1979 | US4145228 Reacting ferrous compound, a nitro or azo aromatic compound and a hydroxide or carbonate of ammonium, alkali or alkaline earth metals |
| 03/13/1979 | US4144316 Production of chlorine and iron oxide from ferric chloride |
| 03/13/1979 | CA1050278A1 Leaching limonitic ores |
| 03/06/1979 | US4142915 Oxidation of ferrous sulfate, reduction of aromatic nitro compound |
| 03/06/1979 | CA1049796A1 Process for the extraction of metal ions from an aqueous solution |
| 02/27/1979 | US4141861 Gels containing iron and molybdenum |
| 02/21/1979 | EP0000749A1 Method for the preparation of needle-shaped ferrimagnetic iron oxides and their application |
| 02/20/1979 | US4140746 Recovery of chlorine values from iron chloride by-produced in chlorination of ilmenite and the like |
| 02/20/1979 | US4140539 Hydrothermal process for producing dense iron oxide pigments |
| 02/13/1979 | US4139398 Process for preparing a red iron oxide pigment |
| 02/06/1979 | CA1047706A1 Iron oxide based pigment and process for preparing such a pigment |
| 01/30/1979 | US4137342 Cobalt-doped acicular hyper-magnetite particles |