| Patents for C01B 33 - Silicon; Compounds thereof (28,579) |
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| 02/10/1982 | EP0045600A1 Improved method for producing semiconductor grade silicon |
| 02/10/1982 | EP0045599A1 Process and apparatus for the production of silicon bodies by continuous chemical vapor deposition |
| 02/10/1982 | EP0045471A1 Process for producing solutions of complex fluorides of tin (II) |
| 02/09/1982 | US4314980 Preparation of reactive beta-dicalcium silicate |
| 02/09/1982 | US4314979 Industrial process for continuous production of zeolite A |
| 02/09/1982 | US4314908 Preparation of reaction mass for the production of methylchlorosilane |
| 02/09/1982 | US4314525 Fluidized bed silicon deposition from silane |
| 02/09/1982 | CA1117734A1 Precipitated silica |
| 02/09/1982 | CA1117733A1 Preparation of finely-divided, water-insoluble silicate cation-exchangers with a narrow particle size spectra |
| 02/03/1982 | EP0045192A2 Process and apparatus for preparing bodies of semiconductor material |
| 02/03/1982 | EP0045191A1 Process and apparatus for the production of semiconductor bodies |
| 02/03/1982 | EP0044903A2 Process and apparatus for the pyrogenic preparation of silicon dioxide |
| 02/02/1982 | US4313753 Process for producing potassium silicate fertilizer and apparatus for practicing said process |
| 02/02/1982 | CA1117512A1 Zeolite synthesis |
| 02/02/1982 | CA1117273A1 Polymeric silicate material and a method of manufacturing the same |
| 01/27/1982 | EP0044645A1 Novel clay mineral color developer for pressure sensitive recording paper and process for producing same |
| 01/27/1982 | EP0044574A2 Use of calcium silicate in granular or powder form for hydrophilic absorption or adsorption |
| 01/27/1982 | EP0044366A1 Distillative freezing process for separating close boiling mixtures |
| 01/26/1982 | US4312850 Semicontinuous process for the manufacture of pure silicon |
| 01/26/1982 | US4312849 Phosphorous removal in silicon purification |
| 01/26/1982 | US4312848 Boron removal in silicon purification |
| 01/26/1982 | US4312847 Silicon purification system |
| 01/26/1982 | US4312846 Using vessel having upwardly removable bottom |
| 01/26/1982 | US4312845 Hydrothermal reaction of silica with sodium hydroxide to form polymeric sodium silicate, spray drying, reaction with sulfuric acid |
| 01/26/1982 | US4312842 Use of evolved sulfur dioxide to form sulfuric acid used in process; air pollution control |
| 01/26/1982 | CA1116832A1 Method of purifying metallurgical-grade silicon |
| 01/20/1982 | EP0044236A1 Process for the preparation of metallic silicates from alkali-metal/silicate solutions, use in glass making |
| 01/19/1982 | US4311545 Method for the deposition of pure semiconductor material |
| 01/12/1982 | US4310680 Metal or metal compound catalyst |
| 01/12/1982 | US4310496 Process for converting silicon dioxide containing waste flue dust to crystalline zeolitic molecular sieves of type A |
| 01/12/1982 | US4310341 Removal of --OH impurities from fiber optic precursor materials |
| 01/12/1982 | CA1116041A1 Process for stabilising anhydrous sodium metasilicate, and the product thus obtained |
| 01/05/1982 | US4309259 To form trichlorosilane and dichlorosilane |
| 01/05/1982 | US4309241 Gas curtain continuous chemical vapor deposition production of semiconductor bodies |
| 01/05/1982 | US4309216 Low density compacts of prepared mix for use in the production of silicon and ferrosilicon |
| 01/05/1982 | CA1115483A1 Preparation of monocalcium phosphate and phosphoric acid |
| 12/29/1981 | US4308245 Method of purifying metallurgical-grade silicon |
| 12/29/1981 | US4308244 Process for producing fluorine compounds and amorphous silica |
| 12/29/1981 | US4308074 Precipitated silicic acid, method and compositions containing same |
| 12/29/1981 | CA1115399A1 Solar cells with low-cost substrates |
| 12/29/1981 | CA1115024A1 Process of hydrometallurgical treatment for eliminating impurities from a solution containing dissolved metals |
| 12/23/1981 | EP0042225A1 Zeolite synthesis |
| 12/22/1981 | US4307242 Process for removing impurities from residual silicon powder |
| 12/16/1981 | EP0041659A1 Process for the diminution of zeolitic sodium-aluminium silicate particle sizes |
| 12/15/1981 | CA1114173A1 Process for digesting bauxite |
| 12/15/1981 | CA1114150A1 Hydrated strontium fluorosilicates activated with divalent europium |
| 12/08/1981 | US4304877 Process for the production of alkali metal lignin-cellulose silicate polymer and reaction products |
| 12/08/1981 | US4304763 Process for purifying metallurgical-grade silicon |
| 12/08/1981 | US4304575 Polishing semiconductors |
| 12/08/1981 | US4304052 Drying intumescent material |
| 12/08/1981 | CA1113689A1 Method for superheating gases |
| 12/08/1981 | CA1113687A1 A method of producing agglomerates of asbestos |
| 12/08/1981 | CA1113686A1 Method of manufacturing silicium for photovoltaic conversion |
| 12/01/1981 | US4303641 Hydrous silica gel containing dentifrice |
| 12/01/1981 | US4303487 Production of alkali metal silicate having a high silica to alkali metal oxide ratio |
| 11/25/1981 | EP0040362A1 A process for producing silica and use of same |
| 11/24/1981 | US4302594 Process for obtaining silane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers |
| 11/24/1981 | CA1112846A1 Poly (silicic acid) and a process of making the same |
| 11/24/1981 | CA1112823A1 Process for the granulation of sodium metasilicate and products obtained |
| 11/17/1981 | US4301034 Silica from single phase controlled hydrolysis of silicate ester |
| 11/17/1981 | US4301027 Colorimetric analysis |
| 11/17/1981 | CA1112425A1 Production of hydrochloric acid |
| 11/12/1981 | WO1981003168A1 High pressure plasma hydrogenation of silicon tetrachloride |
| 11/12/1981 | WO1981003133A1 High pressure plasma deposition of silicon |
| 11/11/1981 | EP0039417A1 Process for producing silicon |
| 11/10/1981 | US4300013 Zeolites |
| 11/10/1981 | US4299808 Crystalline chromosilicates and process of preparation |
| 11/10/1981 | US4299732 Process for the production of amorphous aluminosilicates and their use as catalysts |
| 11/04/1981 | EP0038900A1 Process for the production of pyrogenic silica |
| 11/03/1981 | US4298587 Electrolysis of metal fluoride to form silicon fluoride at silicon anode followed by reaction with metal |
| 11/03/1981 | US4298586 Recovery of hydrofluoric acid from fluosilicic acid |
| 11/03/1981 | US4298423 Method of purifying silicon |
| 11/03/1981 | US4298386 Spherical crystals of wollastonite providing lightweight and high-strength shaped bodies |
| 11/03/1981 | US4298037 Method of shipping and using semiconductor liquid source materials |
| 10/29/1981 | WO1981003036A1 Sodalite photo and/or cathode-chromium material,method of producing it and sensitive element of a variable light transmission device made of that material |
| 10/27/1981 | US4297331 Catalysis |
| 10/27/1981 | US4297143 Dopes of oxides of zirconium, iron, and titanium; vaporization and combustion of the chlorides; insulation |
| 10/20/1981 | US4296000 Silica |
| 10/20/1981 | US4295986 Low temperature catalytic reduction |
| 10/20/1981 | US4295893 Alumina-containing calcium silicate and process for producing same |
| 10/20/1981 | CA1110933A1 Preparation of hydrophobic silicon dioxide |
| 10/20/1981 | CA1110824A1 Silicatic complexing agent for alkaline earth ions and method of preparing same |
| 10/13/1981 | US4294811 Process for manufacturing Si useful for semiconductor components from quartz sand |
| 10/13/1981 | US4294810 Alkali calcium silicates and process for preparation thereof |
| 10/13/1981 | CA1110406A1 Boron-containing precipitated silica |
| 10/07/1981 | EP0037018A2 Process for the preparation of very fine zeolitic sodium aluminium silicates |
| 10/07/1981 | EP0036919A1 Low density compacts of prepared mix for use in the production of silicon and ferrosilicon, method and apparatus for making same |
| 10/06/1981 | CA1110041A1 Process for preparing amorphous particulate poly (alumino-silicate) |
| 10/06/1981 | CA1110040A1 Process of preparing particulate poly (alumino- silicate) |
| 09/29/1981 | US4292344 Producing high purity polycrystalline silicon from silane |
| 09/29/1981 | US4292342 Using the interior walls of a heated structure as substrate |
| 09/29/1981 | US4292290 Process for the production of finely-divided metal and metalloid oxides |
| 09/29/1981 | CA1109640A1 Silicic acid preparation |
| 09/29/1981 | CA1109639A1 Crystalline silica |
| 09/29/1981 | CA1109638A1 Process for the preparation of fine droplet-reacted aluminosilicates of the smallest particle size |
| 09/22/1981 | US4291318 Amorphous silicon MIS device |
| 09/22/1981 | US4291154 Process for the production of polyamide silicate resinous product |
| 09/22/1981 | CA1109568A1 Process for doping high purity silicon in an arc heater |
| 09/15/1981 | US4289681 Boron containing precipitated silica |
| 09/15/1981 | US4289643 Against "dusting" by adding a hydrate or absorbed water to form hydrate |