Compositions: ceramic inventions 06/09

20090163342 - Core glass in the alkali-zinc-silicate glass system for an fiber-optic light guide and fiber-optic light guide made with said core glass: A core glass and a fiber-optic light guide made from it are described. The core glass is in the alkali-zinc-silicate system and contains, in Mol % on an oxide basis: 54.5-65, SiO2; 18.5-30, ZnO; 8-20, Σ alkali oxides; 0.5-3, La2O3; 2-5, ZrO2; 0.02-5, HfO2; 2.02-5, ΣZrO2+HfO2; 0.4-6, BaO; 0-6, SrO;... Agent: Striker, Striker & Stenby

20090163343 - Blue-violet light blocking glass: Specifically, the present invention provides a blue-violet light blocking glass containing a copper (I) halide and silver; for example, 20 to 85% by weight of SiO2; 2 to 75% by weight of B2O3; not more than 10% by weight of Al2O3; 2 to 30% by weight of at least one... Agent: Kratz, Quintos & Hanson, LLP

20090163344 - Component of quartz glass for use in semiconductor manufacture and method for producing the same: The invention starts from a known component of quartz glass for use in semiconductor manufacture, which component at least in a near-surface region shows a co-doping of a first dopant and of a second oxidic dopant, said second dopant containing one or more rare-earth metals in a concentration of 0.1-3%... Agent: Tiajoloff & Kelly

20090163345 - Optical glass composition, preform and optical element: An optical glass composition contains, in % by mole, 14.0% or more and 31.0% or less of SiO2, 19.0% or more and 40.0% or less of B2O3, 0% or more and 5.0% or less of Li2O, 0% or more and 12.0% or less of ZnO, 0% or more and 12.0%... Agent: Pearne & Gordon LLP

20090163346 - Alumina ceramic products: The invention provides a sintered, yttria stabilized zirconium-toughened alumina ceramic product comprising about 80-94 w/w % Al2O3, about 5-19 w/w % ZrO2 and about 0.18-0.72 w/w % Y20.... Agent: Connolly Bove Lodge & Hutz LLP

20090156384 - Armor material made of glass ceramics: The invention relates to a glass ceramic armour material consisting (in % by weight in relation to oxide base) of 5-33 SiO2, 20-50 Al2O3, 5-40 MgO, 0-15 B2O3, 0.1-30 Y2O3, Ln2O3, As2O3, Nb2O3 and/or Sc2O3 and 0-10 P2O5. The inventive armour material can also be reinforced with inorganic reinforcing fibres... Agent: Michael J. Striker

20090156385 - Manufacture and use of engineered carbide and nitride composites: Carbides and nitrides are provided containing a controlled amount of pre-determined diluents and methods for their manufacture and use are disclosed. The pre-determined diluents include at least one of the silica, silicon metal, carbon, alumina, boron oxide, alkaline earth oxides such as calcium oxide, magnesium oxide, alkali oxides such as... Agent: Gardere / Jhif Gardere Wynne Sewell, LLP

20090156386 - Modification of alkaline earth silicate fibres: A method of making refractory alkaline earth silicate fibres from a melt, including the use as an intended component of alkali metal to improve the mechanical properties of the fibre in comparison with a fibre free of alkali metal.... Agent: Smith, Gambrell & Russell

20090156387 - Binder for whiteware ceramic mixture and method of using same: An improvement in a mixture for forming into a body that is to be fired into a “whiteware ceramic product” wherein the mixture is a compound of clay and other minerals with a ferric oxide content of less than about 5.0% by weight of the dry mixture. The improvement includes... Agent: Fay Sharpe LLP

20090149307 - Optical glass: An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive index of 1.83 or over and an Abbe number of 35 or over and being free of F.... Agent: Hedman & Costigan P.C.

20090149308 - Method and device for siliconization of carbon-containing materials: Method for treatment of workpieces of porous carbon material with liquid silicon with the formation of silicon carbide, comprising the following steps: preheating of porous carbon workpieces under an inert gas to a selected operating temperature TB1, delivery of liquid silicon to the porous carbon workpieces at an operating pressure... Agent: Novak Druce & Quigg LLP

20090149309 - Sintered ceramic, slide part therefrom, and process for producing sintered ceramic: It is an object of the invention to provide a ceramic sintered body that has a dense structure and minimal cracking and that exhibits excellent sliding properties even in a non-lubricated state, as well as a process for its production and sliding parts that employ the same. According to a... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090149310 - Pulling roll material for manufacture of sheet glass: A pulling roll for glass manufacture comprised of a high-temperature millboard material. The millboard comprises aluminosilicate refractory fiber, silicate, mica, and kaolin clay. A method of manufacturing a pulling roll is disclosed, together with a roll produced by the methods disclosed herein. The method comprises forming a pulling roll and... Agent: Corning Incorporated

20090149311 - Monolithic refractory material having low expansibility, high strength, and crack extension resistance: The invention relates to a Monolithic refractory material used in refractories and refractory ceramic products, and more particularly to a Monolithic refractory material having low expansibility, high strength, and crack extension resistance used for the purpose of repairing, protecting, modifying, filling, and forming the surface, adhesive surface, interface, or joint... Agent: Burr & Brown

20090149312 - Dielectric ceramic composition and electric device: A dielectric ceramic composition of the present invention comprises; BamTiO2+m (note that, m is 0.99≦m≦1.01), and BanZrO2+n (note that, n is 0.99≦n≦1.01); wherein said dielectric ceramic composition consists of plurality of dielectric particles and a grain boundary phase existing between said dielectric particles adjacent to each other, when said dielectric... Agent: Oliff & Berridge, PLC

20090143211 - Systems and methods for carbon capture and sequestration and compositions derived therefrom: A method of sequestering a greenhouse gas is described, which comprises: (i) providing a solution carrying a first reagent that is capable of reacting with a greenhouse gas; (ii) contacting the solution with a greenhouse gas under conditions that promote a reaction between the at least first reagent and the... Agent: Foley And Lardner LLP Suite 500

20090143212 - High-strength heavy-metal oxide glass fibers and process of making: An optical fiber according to Tran U.S. Pat. No. 5,274,728 is improved by chemically etching the surface of the GeO2-based glass perform with an acid solution based on a mixture of HNO3 and water.... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw

20090143213 - Low expansion glass material having low expansivity gradient: A low expansion glass substrate includes titania and silica and has a thermal expansivity with an average gradient less than 1 ppb/° C./° C. in a temperature range of 19° C. to 25° C.... Agent: Corning Incorporated

20090143214 - 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: Hamre, Schumann, Mueller & Larson, P.C.

20090143215 - Process for reducing non-uniformities in the density of sintered materials: There is disclosed a pre-sintering process for reducing non-uniformities in the density of a sintered material comprising (a) providing a mixture of (i) a first sinterable material containing a contaminant the presence of which during sintering of the first sinterable material results in a higher vapor pressure than would occur... Agent: General Electric Company Global Research

20090143216 - Composition and method: A composition includes a sintered mass having a plurality of cores and a grain boundary layer disposed between each of the plurality of cores. The core includes a transition metal oxide, and grain boundary layer includes a sintering additive, a grain growth inhibitor additive and a grain boundary additive.... Agent: General Electric Company Global Research

20090143217 - Alumina-silica-based fiber, ceramic fiber, ceramic fiber complex, retaining seal material, production method thereof, and alumina fiber complex production method: A manufacturing method by which alumina-silica based fibers excellent in mechanical strength can be readily and securely obtained. The method obtains precursor fibers as a material by using an alumina-silica based fiber spinning stock solution for use in an inorganic salt method. Next, the precursor fibers are heated under an... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.