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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 > Nonsilicate Oxide Glasses > Boron Containing > And Yttrium Or Rare Earth (i.e., Elements With Atomic Numbers 39, 57-71, Or 89+) And Yttrium Or Rare Earth (i.e., Elements With Atomic Numbers 39, 57-71, Or 89+)And Yttrium Or Rare Earth (i.e., Elements With Atomic Numbers 39, 57-71, Or 89+) 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.01/18/07 - 20070015651 - Optical glass, press-molding glass gob and optical element An optical glass having a remarkably high refractive index and excellent stability can be give without being based on PbO, and the optical glass contains, as essential components, at least one oxide selected from La2O3, Gd2O3, Y2O3, Yb2O3, TiO2, Nb2O5 or WO3, at least one oxide selected from MgO, CaO, ... 08/31/06 - 20060194686 - Optical glass and process for producing optical element An optical glass which has an internal transmittance to a light having a wavelength of 400 nm being at least 90% as calculated in a thickness of 1 mm and which contains at least 25 mol % of B2O3 and from 0.1 to 20 mol % of TeO2. The above ... 05/18/06 - 20060105898 - Low melting glass, sealing composition and sealing paste A low melting glass, which contains substantially no lead and contains 70-90% of Bi2O3, 1-20% of ZnO, 2-12% of B2O3, 0.1-5% of Al2O3, 0.1-5% of CeO2, 0-5% of CuO, 0-0.2% of Fe2O3and 0.05-5% of CuO+Fe2O3 in mass %, wherein a content of alkali metal oxides in the glass composition is ... 04/13/06 - 20060079389 - Optical glass, precision press-molding preform, process for the production of the preform, optical element and process for the production of the optical element Provided is an optical glass for precision press-molding is free from degradations in product quality caused by a surface altered layer such as fogging, browning, etc., and a precision press-molding preform and an optical element provided are formed of the above glass. The optical glass is a glass which contains ... 09/22/05 - 20050209085 - Optical glass, press-molding glass gob and optical element An optical glass whose refractive index is high and whose coloring is decreased comprising, by weight %, 2 to 45% of B2O3, 0 to 30% of SiO2 provided that the content of B2O3>the content of SiO2, 10 to 50% of La2O3, 0 to 30% of TiO2, 0 to 15% of ... 09/08/05 - 20050197243 - Optical glass, precision press-molding preform, process for production thereof, optical element and process for the production thereof Provided is an optical glass having high-refractivity low-dispersion properties, having a low glass transition temperature and having the property of being softened at a low temperature so that a preform therefrom is precision press-moldable, and the optical glass comprises, as essential components, B2O3, La2O3, Gd2O3 and ZnO and has a ... ### FreshPatents.com Support |