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Compositions: Ceramic > Ceramic Compositions > Aluminum Compound Containing Aluminum Compound ContainingAluminum Compound Containing 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.02/01/07 - 20070027026 - Polycrystalline alumina articles and methods of manufacture Polycrystalline alumina and methods for manufacturing polycrystalline alumina exhibiting improved transmission in the infrared region. In one embodiment, the percent real in-line transmittance is within about 2% of sapphire at selected wavelengths. In one or more embodiments, polycrystalline articles exhibit improved mechanical properties such as thermal shock resistance and hardness, ... 01/25/07 - 20070021292 - Fine a-alumina particle The present invention provides a fine α-alumina particle having a degree of α-transformation of not less than 95%, a BET specific surface area of not less than 10 m2/g, a degree of necking of not more than 30%, and a total content of Si, Fe, Cu, Na and Mg of ... 12/07/06 - 20060276326 - Method for preparing electroconductive mayenite type compound To provide a method for preparing a mayenite type compound having electroconductivity imparted. A method for preparing an electroconductive mayenite type compound, which comprises melting a raw material containing Al and at least one element selected from the group consisting of Ca and Sr, holding the melt in a low ... 09/21/06 - 20060211568 - High total transmittance alumina discharge vessels having submicron grain size The present invention uses a post-sinter-HIP anneal to increase the total transmittance of ceramic discharge vessels comprised of a submicron-grained alumina doped with MgO. After the anneal, the submicron-grained alumina discharge vessels have high values of both total and in-line transmittance, and are thus suitable for use in focused-beam, short-arc ... ### FreshPatents.com Support |