| Patents for C01F 7 - Compounds of aluminium (12,677) |
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| 02/05/1991 | CA1279759C Process for two-stage initiation for the production of sandy coarse alumina |
| 01/30/1991 | CN1011408B Calcination apparatus for use in fluidized bed burning installation for powdery raw material |
| 01/24/1991 | DE4023001A1 Ceramic-ceramic or ceramic-metal composite powders having uniform 2nd - obtd. by cation-exchanging metal from soln. onto ceramic powder then converting metal to cpd. |
| 01/23/1991 | EP0409319A1 Process for the preparation of a metal oxide composite, composite metal oxide powders and ceramic materials |
| 01/23/1991 | EP0408903A2 Magnetic recording medium |
| 01/23/1991 | CN1048687A Process for producing aluminium sulfate from coal gangue |
| 01/23/1991 | CN1048686A Process for preparing modified polyaluminium chloride |
| 01/22/1991 | US4986969 Precipitation of gallium ferrocyanide |
| 01/21/1991 | CA2021549A1 Process for making a metallic oxide composite, metallic oxide composite powders and ceramic materials thereof |
| 01/16/1991 | EP0407595A1 Aluminum hydroxide, process for its production and composition |
| 01/16/1991 | CN1011229B Synthesis process of magnesium aluminium spinel |
| 01/15/1991 | WO1991001293A1 Aniline catalyst |
| 01/15/1991 | CA2026780A1 Aniline catalyst |
| 01/10/1991 | WO1991000245A1 Method for obtaining aluminium oxide with alloying additions |
| 01/10/1991 | DE3922508A1 Producing silicic acid and acid solns. of aluminium salts, etc. - by reacting glassy residue from fossil fuel reactors with mineral acids |
| 01/09/1991 | EP0407003A1 Gelling composition |
| 01/09/1991 | EP0406406A1 Process for preparing basic aluminum compounds. |
| 01/09/1991 | EP0395714A4 Processes for microemulsion polymerization employing novel microemulsion systems |
| 01/08/1991 | US4983373 Process for the production of high purity zirconium tetrafluoride and other fluorides |
| 01/02/1991 | EP0405598A2 Process to control polymer distribution in antiperspirant salts |
| 01/02/1991 | EP0404788A1 Metallic surface protection |
| 01/02/1991 | EP0380496A4 Aluminum hydroxide production |
| 01/02/1991 | CA1278417C Process for manufacture of metal oxide |
| 01/01/1991 | US4981819 Phase transfer catalyst |
| 01/01/1991 | US4981673 Water treatment |
| 12/27/1990 | WO1990015777A1 Small sized alpha alumina particles and platelets |
| 12/19/1990 | EP0402686A1 Process for manufacturing alpha-Al2O3 microcrystalline sintered bodies and their use |
| 12/19/1990 | CN1047840A Process for making alumina washing aids powder from silica residue |
| 12/13/1990 | WO1990015019A1 Alumina foams and method of producing the same |
| 12/11/1990 | CA1277479C Process for purifying alumina |
| 12/10/1990 | CA2018584A1 Process for the preparation of sintered microcrystalline a1 o bodies and their use |
| 12/05/1990 | CN1010679B Method of processing sodium oxalate formed during the digestion of bauxite |
| 11/28/1990 | CN1010595B Extract ga from bar solution using soaking and adsorbing resin |
| 11/28/1990 | CN1010578B Sintering method of lime stone (lime) suitable for bauxite at high aluminium-silicate ratio |
| 11/20/1990 | CA1276433C Process of carrying out high-temperature reactions |
| 11/14/1990 | EP0396988A2 Aluminium oxide powder having improved processing properties and process for producing |
| 11/14/1990 | EP0396986A2 Raw material mixture with improved workability, process for its production and use thereof |
| 11/14/1990 | EP0396983A1 Drilling fluids comprising thixotropic gel forming substances |
| 11/13/1990 | US4970191 Mixing acid, pseudoboehmite, and magnesium oxide or hydroxide; agitation, drying, and roasting |
| 11/12/1990 | CA2016522A1 Aluminum oxide powders having improved processing properties, processes for their production and their use |
| 11/12/1990 | CA2016520A1 Mixture of raw materials with improved processing properties, a process for their preparation and their use |
| 11/07/1990 | WO1990013608A1 Agent for increasing viscosity in non-aqueous fluid phases, process of making it and its use |
| 11/07/1990 | EP0395925A1 Alpha-aluminium oxide and process for its preparation |
| 11/07/1990 | EP0395714A1 Processes for microemulsion polymerization employing novel microemulsion systems |
| 11/07/1990 | CA2057024A1 Agent for increasing viscosity in non-aqueous fluid phases, process of making it and its use |
| 11/06/1990 | CA1275889C2 Surfactant compositions in alumina precipitation in the bayer process |
| 10/31/1990 | EP0394670A1 Process for the preparation of dawsonite |
| 10/31/1990 | EP0394501A1 Process for the production of alpha alumina sintered bodies |
| 10/31/1990 | EP0394500A1 Process for the production of sintered alpha-alumina bodies |
| 10/31/1990 | CN1046512A Method for making aluminium polychloride from aluminium hydroxide |
| 10/31/1990 | CN1046507A Method for making aluminium polychloride and white carbon from kaolin |
| 10/24/1990 | EP0393275A1 Method for preparing basic aluminum halides |
| 10/24/1990 | EP0218487B1 Basic aluminium chlorosulfate, process for its preparation and its use as a coagulating agent |
| 10/19/1990 | WO1990012645A1 Basic mixed oxide |
| 10/17/1990 | EP0392779A1 Recovery of alumina trihydrate in the Bayer process |
| 10/17/1990 | CN2063936U Drier |
| 10/17/1990 | CA2014482A1 Production of alpha-al 0 sintered bodies |
| 10/16/1990 | US4963520 Promote oxidation of sulfur dioxide and reduction of metal sulfates; pollution control |
| 10/10/1990 | EP0391448A2 Method for production of powder of fine inorganic particles |
| 10/10/1990 | CA2014262A1 Recovery of alumina trihydrate in the bayer process |
| 10/04/1990 | WO1990011249A1 Method of obtaining complex oxides |
| 10/04/1990 | DE3910496A1 Process for obtaining corundum |
| 10/03/1990 | CN1009802B Stabilized magnesia and its use in catalytic processes |
| 10/02/1990 | US4960583 Oxide having a trivalent metal or monovalent metal or any mixture of them |
| 10/02/1990 | CA1274927A1 Flocculants for bauxite (red mud) |
| 09/26/1990 | EP0389061A2 Process for the production of aluminium hydroxide from bauxite |
| 09/26/1990 | EP0335930A4 Bonded abrasive |
| 09/20/1990 | WO1990010499A1 Process for improving the physical and catalytic properties of a fluid cracking catalyst |
| 09/20/1990 | WO1990010496A1 Apparatus |
| 09/19/1990 | EP0388026A1 Aluminide structures |
| 09/19/1990 | EP0387856A1 Method for producing boehmite |
| 09/19/1990 | EP0387492A1 Process for the production of sodium aluminate |
| 09/19/1990 | EP0387307A1 Chemical reactions in reverse micelle systems |
| 09/12/1990 | EP0387109A1 Process for the preparation of activated alumina agglomerates, as-produced agglomerates and apparatus for their preparation |
| 09/12/1990 | EP0386174A1 Ultra high purity halides and their preparation |
| 09/12/1990 | CN1045254A Improved process for producing alumina from bauxite |
| 09/10/1990 | CA2011873A1 Process for improving the physical and catalytic properties of fluid cracking catalysts |
| 09/05/1990 | EP0364543A4 Viscosity-modifiers for aqueous-based functional products |
| 09/05/1990 | EP0261590B1 Process for the preparation of metal oxides or mixed metal oxides |
| 09/04/1990 | US4954462 Microcrystalline alumina-based ceramic articles |
| 09/04/1990 | CA1273647A1 Production of ceramic powders by emulsion precipitation processes and the products thereof |
| 08/29/1990 | EP0384272A2 Improvements to the catalyzed oxidation of Bayer liquor organics |
| 08/29/1990 | CN1009358B Method of making beta-alumina |
| 08/28/1990 | US4952539 Peptisizing, hydrolyzing, heating, sintering, drying and pressing |
| 08/28/1990 | US4952389 Fluized bed catalyst carriers for high temperature steam processes; friable, porous spheres; agglomerating with clay, deagglomeration |
| 08/23/1990 | WO1990009349A1 Agent recovery from bayer process liquors |
| 08/22/1990 | EP0383736A1 Process for the preparation of polyaluminium compounds |
| 08/22/1990 | EP0383156A1 Process for eliminating phosphates and organically bound phosphorus from waste and feed waters |
| 08/22/1990 | EP0180900B1 Process for the adjustment of the structure and/or surface characteristics of oxidized materials |
| 08/22/1990 | CN1009249B Process for preparation of silver-containing catalyst |
| 08/16/1990 | EP0382383A2 Improved process for producing alumina from bauxite |
| 08/16/1990 | EP0382310A2 Process for preparing monoliths of aerogels of metal oxides |
| 08/15/1990 | CN1009189B Production of alumina from gibbsite-bearing bauxite of low reactive silica content |
| 08/13/1990 | CA2009847A1 Process for the preparation of polyaluminium compounds |
| 08/09/1990 | WO1990008737A1 Aluminum hydroxide, process for its production and composition |
| 08/08/1990 | EP0380496A1 Aluminum hydroxide production. |
| 08/07/1990 | US4946814 Adding an acid stable anionic fluoroarbon surfactant to slurry then spray drying |
| 08/07/1990 | US4946666 Process for the production of fine tabular alumina monohydrate |
| 08/07/1990 | US4946664 Method of making β"-alumina |
| 08/01/1990 | EP0380011A2 Process for preparing transparent alumina ceramics |