| Patent application number | Description | Published |
|---|
| 20090136672 | NEW PRECIPIATED SILICA FOR THICKENING AND CREATING THIXOTROPIC BEHAVIOR IN LIQUID SYSTEMS - A precipitated silica having a d | 05-28-2009 |
| 20090137732 | PRECIPITATED SILICAS FOR STORAGE-STABLE RTV-1 SILICONE RUBBER FORMULATIONS WITHOUT STABILIZER - A precipitated silica having an SiOH | 05-28-2009 |
| 20100285317 | AMORPHOUS SUBMICRON PARTICLES - A process for milling amorphous solids using a milling apparatus can result in particles having a median particle diameter d | 11-11-2010 |
| 20110236288 | METHOD FOR PRODUCING HIGH-PURITY SIO2 FROM SILICATE SOLUTIONS - The invention relates to a novel method for producing high-purity SiO | 09-29-2011 |
| 20110244238 | METHOD FOR PRODUCING HIGH-PURITY SIO2 FROM SILICATE SOLUTIONS - The invention relates to a novel method for producing high-purity SiO | 10-06-2011 |
| 20110262336 | PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE - The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a silicon oxide, purified by acidic precipitation from an aqueous solution of a silicon oxide dissolved in an aqueous phase, using one or more pure carbon sources, the purified silicon oxide being obtained, in particular, by the precipitation of a silicon oxide dissolved in an aqueous phase in an acidifier. The invention also relates to a formulation containing an activator and to a device for producing silicon, a reactor and electrodes. | 10-27-2011 |
| 20110262339 | PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE - The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a purified silicon oxide using one or more pure carbon sources, the purified silicon oxide, which was purified as silicon oxide dissolved in an aqueous phase, having a content of other polyvalent metals or metal oxides, in relation to the silicon oxide, of less than or equal to 300 ppm, preferably less than 100 ppm, especially preferably less than 50 ppm and according to the invention less than 10 ppm of the other metals and being obtained advantageously by gel formation in alkaline conditions. The invention also relates to a formulation containing an activator and to the use of purified silicon oxide together with an activator for producing silicon. | 10-27-2011 |
