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Compositions: Ceramic > Ceramic Compositions > Devitrified Glass-ceramics > Silica Containing Crystalline Phase (e.g., Stuffed Quartz, Crystobalite, Etc.) Silica Containing Crystalline Phase (e.g., Stuffed Quartz, Crystobalite, Etc.)Silica Containing Crystalline Phase (e.g., Stuffed Quartz, Crystobalite, 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.01/04/07 - 20070004578 - Glass-ceramic materials, precursor glass thereof and process for making the same The invention relates to: a method of preparing glass-ceramics of β-quartz and/or of β-spodumene; a method of preparing articles made from said glass-ceramics; novel glass-ceramics of β-quartz and/or of β-spodumene; articles made from said novel glass-ceramics; and lithium aluminosilicate glasses, which are precursors of such novel glass-ceramics. The present invention ... 06/22/06 - 20060135341 - B-quartz glass-ceramic extreme ultraviolet optical elements and a method of making them The invention is directed to a glass-ceramic material suitable for use in the manufacturing of EUVL reflective optics. The glass-ceramic materials is made from a composition that comprises (in wt. %): SiO2=64-70; Al2O3=18-24; Li2O=1.6-3.8; MgO=0.8-1.5; ZnO=0.7-4.2; BaO=0.1-1.4; TiO2=2.0-3.5; ZrO2=1.25-2.5; As2O3=0.1-1.0; Na2O<0.5; and K2O<0.5; and the glass-ceramic material has an aggregate ... 05/18/06 - 20060105897 - Optical glass, glass material for press molding, optical element, and method of manufacturing same Disclosed is an optical glass comprising, expressed as weight percentages, greater than or equal to 18 percent and less than 30 percent of SiO2, greater than or equal to 12 percent and less than 23 percent of BaO, 22 to 37 percent TiO2, greater than or equal to 7 percent ... 11/17/05 - 20050255984 - Zinc oxide-alumina-silica-based crystallized glass A zinc oxide-alumina-silica-based crystallized glass containing zinc oxide, alumina and silica as main components, and zirconia as a nucleating agent, the main components comprising at a ratio of 20-30% by mass of zinc oxide, 15-25% by mass of alumina and 50-60% by mass of silica, the main components amounting to ... 11/17/05 - 20050255983 - Method of making a glass-ceramic article The method produces a glass-ceramic article substantially in the form of a plate with improved high temperature difference resistance or strength. The glass-ceramic article contains keatite mixed crystals (KMK) or high quartz mixed crystals (HQMK) as well as the keatite mixed crystals (KMK). The method includes heating a glass-ceramic in ... 07/07/05 - 20050148452 - Glass ceramic dielectric material suitable for production of a microwave circuit component Glass powder for a dielectric material has a nature that, when fired, diopside (CaMgSi2O6) and at least one of titanite (CaTi(SiO4)O) and titania (TiO2) are precipitated. Preferably, the glass powder has a composition including SiO2, CaO, MgO, and TiO2 and the total content of these components is 80 mass % ... 06/30/05 - 20050143247 - Flat float glass This invention relates to a flat float glass that can be prestressed or transformed into a glass ceramic with high quartz mixed crystals or keatite mixed crystals. To eliminate undesirable surface defects during floating and to achieve superior characteristics of the glass or of he glass ceramic, in particular with ... 06/30/05 - 20050143246 - Glass and glass-ceramic materials, articles and method of preparing the same The present invention relates to novel glass and glass-ceramic materials, articles made from said novel glass-ceramics and to methods of preparing said novel glass-ceramics and articles. Said novel, transparent, translucent or opaque glass-ceramics, which contain, as main crystalline phase, a solid solution of β-quartz or of β-spodumene, essentially have the ... ### FreshPatents.com Support |