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Compositions: ceramic August inventions list 08/11

20110207591 - Transparent las glass ceramics produced with alternative environmentally acceptable fining agents: The transparent glass ceramic with low thermal expansion is produced from a glass that is fined with a combination of environmentally friendly fining agents, specifically a combination of SnO2 with at least one of Sb2O3, SO42−, Br− and Cl−. The glass is free of arsenic and is preferably made from... Agent:

20110207593 - Expansivity in low expansion silica-titania glasses: This disclosure is directed to tailoring and improving the expansivity of low thermal expansion silica-titania glass through changes in the [OH] content and fictive temperature of the glasses. The [OH] concentration in the glass can be in the range of 600-2500 ppm. The fictive temperature, TF is less than 900°... Agent:

20110207592 - Low expansivity, high transmission titania doped silica glass: In one embodiment the present disclosure is directed to a silica-titania glass with an internal transmission of >90%/cm at wavelengths from 340 nm to 840 nm. In another embodiment the internal transmission is >93%/cm at wavelengths from 340 nm to 840 nm. In a further embodiment the internal transmission is... Agent:

20110207594 - Glass composition: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %; 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20%... Agent: Avanstrate Inc.

20110207595 - Process for colouring ceramic materials: The invention relates to a new process for colouring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be coloured, after which aqueous or organic solutions comprising inorganic salts of Fe(II) and/or Fe (III), or... Agent:

20110207596 - Method for producing a packing structure with control over hydrothermal synthesis parameters: The invention relates to a method for producing a packing structure, characterized in that it includes the following steps: a) a step in which the temperature of an initial mixture of quicklime and silica is raised to a temperature T1 of between 150 and 300° C. over a period of... Agent: L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

20110201489 - Photochromic benzopyrano-benzopyrans with further fusing: The present invention relates to photochromic benzopyranobenzopyrans with additional fusion and to the use thereof in plastics of all types, in particular for ophthalmic purposes. The compounds according to the invention are photochromic benzopyran compounds which can also be regarded as derived from 9-oxa-9,10-dihydrophenanthrene.... Agent:

20110201490 - Crack and scratch resistant glass and enclosures made therefrom: A glass and an enclosure, including windows, cover plates, and substrates for mobile electronic devices comprising the glass. The glass has a crack initiation threshold that is sufficient to withstand direct impact, has a retained strength following abrasion that is greater than soda lime and alkali aluminosilicate glasses, and is... Agent:

20110201491 - Dielectric ceramic, and resonator using the same: Provided is a dielectric ceramic containing yttrium, manganese, and aluminum, and having a composition formula expressed by αBaO.βNd2O3.γTiO2, wherein mole ratios α, β and γ satisfy 14≦α≦21, 4≦β≦21, and 65≦γ≦75, respectively. In this case, the equation: α+β+γ=100 is established.... Agent: Kyocera Corporation

20110195833 - High-refractivity low-dispersion optical glass: The invention provides an environment-friendly optical glass with high refractive index, low dispersion and high light transmittance. The optical glass includes 6%-17% of B2O3, 2-10% of SiO2, more than 25% but less than 45% of La2O3, 5-25% of Gd2O3, 0-3% of Nb2O5, more than 19% but less than 27% of... Agent: Cdgm Glass Co., Ltd

20110195834 - Wear resistant two-phase binderless tungsten carbide and method of making same: An ultrafine grain two-phase binderless tungsten carbide material is disclosed. The material contains, in weight percent, ditungsten carbide in the range of about 1 to about 10 percent, up to about 1.0 percent vanadium carbide and/or chromium carbide, up to about 0.2 percent cobalt, and the balance tungsten carbide, wherein... Agent: Kennametal, Inc.

20110195835 - Dielectric ceramic composition and electronic device: A dielectric ceramic composition comprising a main component expressed by a general formula (Ba1−x−ySrxCay)m(Ti1−zZrz)O3, Mg oxide, oxides of at least one kind selected from Mn and Cr, rare earth oxide, an oxide including Si and a composite oxide including Ba, Sr and Zr. The general formula shows that 0.20≦x≦0.40, 0≦y≦0.20,... Agent: Tdk Corporation

20110190112 - Emulsions for fibreglass binder systems: The present invention relates to an aqueous anti-dusting formulation for use in combination with a binder in the manufacture of fibre wool insulation, the formula comprising: a) oil; b) polyvinyl alcohol; and c) water. The invention further relates to a method for preparing a glass or mineral fibre product with... Agent: Walker Industries Holdings Limited