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Compositions: Ceramic > Ceramic Compositions > Glass Compositions, Compositions Containing Glass Other Than Those Wherein Glass Is A Bonding Agent, Or Glass Batch Forming Compositions > Silica Containing > 40 Percent - 90 Percent By Weight Silica > And Divalent Metal Oxide (e.g., Oxides Of Zinc, Cadmium, Beryllium, Alkaline Earth Metal, Magnesium, Etc.) And Divalent Metal Oxide (e.g., Oxides Of Zinc, Cadmium, Beryllium, Alkaline Earth Metal, Magnesium, Etc.)And Divalent Metal Oxide (e.g., Oxides Of Zinc, Cadmium, Beryllium, Alkaline Earth Metal, Magnesium, Etc.) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.02/15/07 - 20070037688 - Method for making float glass having reduced defect density A method for reducing the defect density of glass comprising melting a glass composition comprising from 65-75 wt. % of SiO2; from 10-20 wt. % of Na2O; from 5-15 wt. % of CaO; from 0-5 wt. % of MgO; from 0-5 wt. % of Al2O3; from 0-5 wt. % of ... 02/08/07 - 20070032368 - Glass composition for improved refining and method A soda-lime-silica based glass composition for manufacturing on a float line that has a faster refining rate due to the introduction of alkali earth oxides such as BaO, ZnO and/or SrO in the amount of from about 1-4% in total. These oxides replace part or all of the MgO in ... 10/26/06 - 20060240970 - Glass compositions for the production of lead-free crystals The invention refers to glass compositions for the production of lead-free crystals, having a density greater than 2.4 g/cm3, a refractory index of at least 1.51 and high resistance to chemical attack, characterized by comprising, by weight: from about 50% to about 75% of SiO2; from about 0.1% to about ... 07/27/06 - 20060166807 - Composition, use and manufacture of bioactive glass A bioactive glass composition which contains SiO2, Na2O, CaO, K2O, MgO, P2O5 and B2O3. The amount of SiO2 is 51-56 wt-% of the starting oxides, Na2O is 7-9 wt-% of the starting oxides, CaO is 21-23 wt-% of the starting oxides, K2O is 10-12 wt-% of the starting oxides, MgO ... 01/26/06 - 20060019815 - Clad glass composition and mother glass rod for gradient-index rod lens formed using the same, gradient-index rod lens and method of manufacturing the same, rod lens array, and image processor The present invention provides a clad glass composition that is excellent in devitrification resistance and that prevents the whole mother glass rod from devitrifying by preventing a core glass composition from devitrifying in forming a mother glass rod using a concentric crucible drawing method. The clad glass composition forms a ... 01/05/06 - 20060003884 - Alkali free glass An alkali free glass characterized in that the ratio (Δan-st/α50-350) of the equilibrium density curve gradient Δan-st (ppm/° C.) in a temperature range of from about the annealing point (Tan) to about the strain point (Tst) to the average linear expansion coefficient α50-350 (×10−6/° C.) in a range of from ... 09/22/05 - 20050209086 - Panel glass for cathode ray tube A panel glass for cathode ray tube, having a glass composition containing substantially no PbO, and more than 10 mass % and at most 15 mass % of ZnO, wherein (MgO (mass %)+ZnO (mass %))/(SrO (mass %)+BaO(mass %)+CaO (mass %))>0.55, and wherein when the sum of Na2O (mol %), K2O ... ### FreshPatents.com Support |