| Patents for C01B 33 - Silicon; Compounds thereof (28,579) |
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| 02/13/1990 | US4900530 Reacting fluosilicic acid with sulfuric acid in fluidodynamic conditions; separation, adsorption, continuous processing |
| 02/13/1990 | US4900528 Zeolite synthesis |
| 02/13/1990 | US4900411 Method of preparing a high-purity polycrystalline silicon using a microwave heating system in a fluidized bed reactor |
| 02/08/1990 | WO1990001016A1 Mecanochemical preparation of carbides and silicides |
| 01/31/1990 | EP0352715A1 Twice-aged porous inorganic oxides, catalysts, and polymerization processes |
| 01/30/1990 | US4897852 Silicon smelting process |
| 01/30/1990 | CA1264926A1 Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids |
| 01/24/1990 | EP0352027A2 Process for producing pure and dense amorphous synthetic silica particles |
| 01/24/1990 | CN1039000A Production of water glass and activated carbon from rice husk ash |
| 01/23/1990 | US4895709 Low temperature pyrolysis |
| 01/23/1990 | CA1264721A1 Metallosilicates of tetravalent lanthanide and actinide series metals |
| 01/17/1990 | EP0351311A1 Gallosilicate catalyst and its use in the aromatization of C2-C4 light gases |
| 01/16/1990 | US4894468 Substituted silica |
| 01/16/1990 | US4894357 Process for adjusting the structural and/or surface character of oxides |
| 01/16/1990 | US4894182 Organophilic clay gellant and processes for preparing organophilic clay gellants |
| 01/16/1990 | CA1264432A1 Organoclays |
| 01/11/1990 | EP0343233A4 Supercritical fluid reverse micelle separation. |
| 01/10/1990 | EP0350391A1 Lanthanide silicate monocrystals useful scintillators for X-ray and gamma-ray detection |
| 01/10/1990 | EP0350167A1 Functional fluids |
| 01/09/1990 | US4892694 Deactivation of spent silicon powder |
| 01/09/1990 | US4892591 Filler for ink jet recording paper |
| 01/09/1990 | US4892568 Process for removing n-type impurities from liquid or gaseous substances produced in the gas-phase deposition of silicon |
| 01/09/1990 | CA1264315A1 Synthetic calcium silicates, methods of preparation and uses |
| 01/03/1990 | EP0348784A1 Method of dessalting swellable silicate layers |
| 01/03/1990 | CN1038439A Technical scheme concerning exploitation and utilization of ferri-smectite clay |
| 01/03/1990 | CN1038435A High-density product of light ultrafine powder as well as its production method and apparatus |
| 01/03/1990 | CN1038405A Silica for preparation for cleaning teeth compatible with zinc |
| 12/28/1989 | WO1989012602A1 Process for removing salts from expandable laminaed silica |
| 12/28/1989 | WO1989012500A1 Gel composition and nail cosmetic |
| 12/26/1989 | US4889885 Composite material containing a layered silicate |
| 12/26/1989 | US4889703 From sodium silicate and sodium tungstate in presence of cation exchange resin |
| 12/20/1989 | CN1038070A Method for manufacturing sodium silicate |
| 12/19/1989 | US4888378 Adsorbers, flatting agents |
| 12/19/1989 | US4888314 For dielectrics |
| 12/14/1989 | DE3917629A1 Process for preparing macroporous silica gels |
| 12/13/1989 | EP0345618A2 Polycrystalline silicon |
| 12/13/1989 | EP0345596A2 Solar cell silicon, method of producing it and its use |
| 12/12/1989 | CA1263857A1 Structured silicas |
| 12/06/1989 | EP0345116A1 Silica for dental care compositions compatible especially with zinc |
| 12/06/1989 | EP0345109A1 Absorbing precipitated silica and composition based thereon |
| 12/06/1989 | EP0344563A2 Process for inactivating industrial wastes of chrysotile asbestos |
| 12/05/1989 | US4885149 Recovery and purification of silica |
| 12/05/1989 | CA1263585A1 Stable dispersions of inorganic particles |
| 11/30/1989 | WO1989011508A1 Air-gap interference pigments, manufacture and use thereof |
| 11/29/1989 | EP0343233A1 Supercritical fluid reverse micelle separation. |
| 11/29/1989 | CN1037491A Inorganic macromolecule material (silicate ceramic) |
| 11/28/1989 | US4883687 Decomposition of silane, high purity, semiconductors |
| 11/28/1989 | US4883539 Coated silicate particles |
| 11/28/1989 | CA1263293A1 Process and apparatus for the cyclical manufacture of silicon shaped articles |
| 11/23/1989 | EP0342472A1 Spherical hydrophilous silica, process for its preparation and use |
| 11/22/1989 | CN1037363A Comprehensive utilization of low-grade al materials |
| 11/21/1989 | US4882133 Coating sol, shrinkage, scraping |
| 11/16/1989 | WO1989010819A1 Silicate binders |
| 11/15/1989 | EP0342075A1 Synthesis of new gallosilicates having the MFI structure |
| 11/15/1989 | EP0342036A1 Silicate binders |
| 11/15/1989 | EP0341383A2 Finely divided precipitated silicas with a high structure, process for their preparation and their use |
| 11/14/1989 | US4880650 Filtration |
| 11/08/1989 | EP0340868A1 Catalytically active silica and alumina gel and process for preparing it |
| 11/08/1989 | EP0340544A2 Process for the treatment of aqueous, electrolyte containing suspensions of phyllosilicates with a high savelling capacity |
| 11/08/1989 | CN1005708B Active clay for oil and fat purification |
| 11/02/1989 | EP0340129A1 Hydrophobic precipitated silica with enhanced properties |
| 11/02/1989 | EP0339343A1 Improving the water-resistance of fine-vermiculite articles |
| 11/01/1989 | CN2046993U Net-bag type drying apparatus |
| 11/01/1989 | CN1036799A Process for making chemical products from blast-furnace slags by decomposition with hydrochloric acid |
| 11/01/1989 | CN1036746A Process of producing white carbon using siliceous sand |
| 11/01/1989 | CN1005625B Technology for preparing polycrystal silicon ingot by orientational solidification and growth for solar battery |
| 10/31/1989 | US4877596 Heating molten silicon, establish temperature gradient by cooling bottom of vessel |
| 10/31/1989 | US4877595 Rotary vacuum filter equipped with a pressing band |
| 10/31/1989 | US4877484 Flocced 2:1 layered silicates and water-resistant articles made therefrom |
| 10/31/1989 | US4877445 Reduction using reducing metal agent |
| 10/25/1989 | CN1036547A Stable silica sol, and process for preparing it |
| 10/19/1989 | WO1989009749A1 Synthesis of a crystalline molecular sieve |
| 10/19/1989 | WO1989009748A1 Synthesis of a crystalline molecular sieve |
| 10/19/1989 | WO1989003805A3 Production of low-fluorine calcium phosphate and phosphoric acid and of silica |
| 10/18/1989 | EP0337835A1 Zeolites based on silica and germanium oxide and process for their synthesis |
| 10/18/1989 | EP0337712A2 Method of production of high purity silica and ammonium fluoride |
| 10/18/1989 | EP0337322A2 Process for producing monosilane |
| 10/18/1989 | EP0337212A2 Silicia gels for controlling insect pests |
| 10/17/1989 | US4874728 Organophilic clay modified with silane compounds |
| 10/17/1989 | US4874594 Precipitates; aggregates |
| 10/12/1989 | DE3910343A1 Externally heated fluidised-bed reactor |
| 10/11/1989 | CN1005404B Process for mfg. silica gel capable of adjusting porous structure and non-cracking |
| 10/10/1989 | US4873353 Preceramic compositions and ceramic products |
| 10/10/1989 | US4873297 Process for reducing the halogen content of halogen-containing polycarbosilanes and polysilanes |
| 10/10/1989 | US4873146 Transparent fire-screening panels |
| 10/10/1989 | US4873141 Calcium-hydrosilicate based thermo-insulating material |
| 10/05/1989 | WO1989009185A1 New zeolite ssz-26 |
| 10/05/1989 | DE3908715A1 Verfahren zur herstellung von pulverfoermigen hochschmelzenden anorganischen verbindungen und metallischen mischkoerpern Process for the preparation of pulverfoermigen refractory inorganic compounds and metallic mischkoerpern |
| 10/04/1989 | EP0335653A1 Method for the preparation of gels capable of taking up and releasing water in a reversible manner from clay minerals and polymers |
| 10/04/1989 | EP0335195A2 Silica sol containing elongated-shaped particles and method for preparing the same |
| 10/04/1989 | EP0335175A2 Method of making large particle size, high purity dense silica |
| 10/04/1989 | EP0335171A2 Method of making high purity dense silica of large particle size |
| 10/04/1989 | EP0334984A1 Silica sol stabilized against freezing and its use as a liquid in phosphate-bonded investments |
| 10/03/1989 | US4871693 Porous cordierite ceramics |
| 10/03/1989 | US4871587 Decomposition of halosilanes, contacting with carbon object |
| 10/03/1989 | US4871524 Hydrogen purification process |
| 10/03/1989 | US4871117 Low-contamination method for comminuting solid silicon fragments |
| 09/27/1989 | EP0334664A2 Recovery of lower-boiling silanes in A CVD process |
| 09/26/1989 | CA1261589A1 Predetermined and enhanced densification in sintered metal oxides |
| 09/26/1989 | CA1260920A1 Crystalline magnesia-silica composites and process for producing same |