Compositions: ceramic inventions 03/08

20080070774 - Ceramic proppant with low specific weight: A precursor composition for the production of granulated ceramic material, particularly for ceramic proppants, comprises 20 to 55% by weight of magnesium orthosilicate, 20 to 35% by weight of MgO, and 2.5 to 11% by weight of Fe2O3. The resulting lightweight proppant material shows high mechanical strength. To further decrease... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20080064585 - Multiphase ceramic nanocomposites and method of making them: Multiphase ceramic nanocomposites having at least three phases are disclosed. Each of the at least three phases has an average grain size less than about 100 nm. In one embodiment, the ceramic nanocomposite is substantially free of glassy grain boundary phases. In another embodiment, the multiphase ceramic nanocomposite is thermally... Agent: General Electric Company Global Research

20080064584 - Translucent ceramic, method for manufacturing the same, optical component, and optical device: A translucent ceramic having a high light transmittance is provided. It contains a perovskite compound having a composition represented by a general formula: (Ba1-s-tSrsCat)(MxB1yB2z)vOw (where M contains at least one of Sn, Zr and Hf, B1 represents at least one of Mg, Zn, Y and In, B2 represents at least... Agent: Dickstein Shapiro LLP

20080064586 - A-sia1on, a-sia1on phosphor and method for producing the same: An α-sialon is offered which is represented by general formula: (M1)X (M2)Y (Si, Al)12 (O, N)16 (wherein M1 represents one or more elements selected from the group which consists of Li, Mg, Ca, Y and lanthanoid (except La and Ce) and M2 represents one or more elements selected from the... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080058193 - Lead-free frits for plasma displays and other glass devices utilizing glass sealing materials: The invention is directed to lead-free glass frit compositions that can be used as sealing frits, the compositions being a blend of: (1) at least one of two glass families which are SnO—ZnO—P2O5 and alkali-ZnO—P2O5 glasses; and (2) at least one cerammed filler material having a crystalline phase selected from... Agent: Corning Incorporated

20080058194 - Method of producing ceramic foams: A process for foaming ceramic foams, in which the ceramic foams are produced from a precursor or a mixture of precursors which contain at least one ceramic-forming element and liberates at least one volatile reaction product during an inorganic gelation process. In one embodiment, foaming is based on a precursor... Agent: Hunton & Williams/new York Intellectual Property Dept.