Compositions: ceramic inventions 02/07

20070042889 - Lithium silicate glass ceramic: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.... Agent: Nixon Peabody LLP - Patent Group

20070042890 - Low alkali, non-crystaline, vitreous silica fillers: A substantially white powder for use as a filler and/or extender derived from by-products of manufacturing vitreous low alkali, low iron glass fibers, and a method for producing the powder. The filler has very low alkalinity and by virtue of its being essentially free of crystalline silica is non-hazardous to... Agent: Klauber & Jackson

20070042891 - Lead-free and arsenic-free niobium phosphate optical glass: The lead-free, arsenic-free, preferably gadolinium-free and fluorine-free, optical glass has a refractive index of 1.86≦nd≦1.95, an Abbe number of 19≦vd≦24, a transformation temperature of ≦595° C., preferably ≦550° C., good crystallization stability, good processing properties and production properties. The optical glass has a composition (based on oxide content in %... Agent: Striker, Striker & Stenby

20070042892 - Doped silica glass articles and methods of forming doped silica glass boules and articles: The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a titania-doped silica glass article has a titania content of between about 5 wt % and about 9 wt %; a coefficient of thermal... Agent: Corning Incorporated

20070042893 - Silica glass containing tio2 and process for its production: A silica glass containing TiO2, which has a TiO2 concentration of from 3 to 10 mass %, a OH group concentration of at most 600 mass ppm and a Ti3+ concentration of at most 70 mass ppm, characterized by having a fictive temperature of at most 1,200° C., a coefficient... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070042894 - High strain point glasses: A family of glasses from the rare earth alumino-silicate (RE2O3-Al2O3-SiO2) ternary system exhibiting high strain point and low liquidus temperatures; preferably the La2O3 -Al2O3-SiO2 ternary system. The glasses are excellent candidates for electronics applications and have the following composition, expressed in mole percent and calculated from the glass batch on... Agent: Corning Incorporated

20070042895 - Heat sink made from diamond-copper composite material containing boron, and method of producing a heat sink: A heat sink that is particularly suitable for semiconductor components is made from a diamond-containing composite material. In addition to a diamond fraction amounting to 40-90% by volume, the composite material also contains 7 to 59% by volume copper or a copper-rich phase (with Cu>80 at. %) and 0.01 to... Agent: Lerner Greenberg Stemer LLP

20070042896 - Mgal2o4 spinel refractory as containment liner for high-temperature alkali salt containing environments: A method includes containing a high-temperature alkali salt containing environment using a refractory containment liner containing MgAl2O4 spinel. A method, includes forming a refractory brick containing MgAl2O4 spinel having an exterior chill zone defined by substantially columnar crystallization and an interior zone defined by substantially equiaxed crystallization; and removing at... Agent: John Bruckner PC

20070042897 - Yttria sintered body, electrostatic chuck, and manufacturing method of yttria sintered body: A yttria sintered body contains an amount of silicon carbide within a range of 5 to 40% by volume, has a volume resistivity at room temperature within a range of 1×101 to 1×1017Ω·cm, and is adapted for application to an electrostatic chuck.... Agent: Burr & Brown

20070037685 - Glass for press molding: The present invention provides a novel glass material that allows the production of a glass product having both excellent chemical durability and high precision by a press molding method. Specifically, the present invention provides a glass for press molding, comprising 38% to 45% by weight of SiO2, 18% to 27%... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070037686 - Silico-sodo-calcic glass composition for the production of substrates.: e

20070037687 - Grey glass composition including erbium, neodymium and/or praseodymium: A grey glass composition is suitable for architectural and/or vehicle window applications. The grey glass may achieve a combination of good visible transmission, a low SHGC, and desirable coloration. In certain example embodiments, the grey glass includes iron, erbium (Er), neodymium (Nd) and/or praseodymium (Pr) in the colorant portion of... Agent: Nixon & Vanderhye, PC

20070037688 - Method for making float glass having reduced defect density: A method for reducing the defect density of glass comprising melting a glass composition comprising from 65-75 wt. % of SiO2; from 10-20 wt. % of Na2O; from 5-15 wt. % of CaO; from 0-5 wt. % of MgO; from 0-5 wt. % of Al2O3; from 0-5 wt. % of... Agent: Ppg Industries Inc Intellectual Property Dept

20070037689 - Dieletric composition for plasma display panel and plasma display panel: A dielectric composition for a plasma display panel and a plasma display panel including a dielectric layer formed of the dielectric composition are provided. The dielectric composition comprises PbO, B2O3, SiO2, Al2O3 and RO (BaO+MgO+ZnO). Contents of PbO, B2O3, SiO2, Al2O3 and RO (BaO+MgO+ZnO) range from 60 wt % to... Agent: Fish & Richardson P.C.

20070037690 - Zirconia extrudates: A process for preparing a calcined zirconia extrudate comprising the steps of: a. preparing a shapable dough which comprises mixing and kneading a particulate zirconia with a solvent to obtain a mixture having a total solids content of from about 50% to about 85% by weight, b. extruding the shapable... Agent: Shell Oil Company

20070037691 - Sound-emitting device: A sound-emitting device (10, FIG. 1) may be mounted to a wall near places which be unsuitable for the congregation of young person, such as outside shops and on street corners. The device generates sound waves at a frequency that is detectable by one or more subgroups of individuals within... Agent: Jacobs & Kim LLP

20070032364 - Glass for covering electrode: Provided is a nonlead glass for covering an electrode, which comprises, in mol%, B2O3 15-65%, SiO2 2-38%, MgO 2-30%, MgO+CaO+SrO+BaO 5-45%, Li2O 1-15%, Li2O+Na2O+K2O 2-25% and others, and which comprises ZnO 0-15%. Provided is a nonlead glass for covering an electrode, which comprises, in mol %, B2O3 25-65%, SiO2 2-38%,... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070032365 - Glass composition: A glass composition for parts of electric lamps is disclosed, which is substantially free of lead and comprises the following components in percentage by weight: SiO2 60-72 Al2O3 1-5 Li2O 0.5-1.5 Na2O 5-9 K2O 3-7 MgO 1-2 CaO 1-3 Sro 1-5 BaO 7-11 Fe2O3 0.03-0.06 Sb2O3 0.1-0.5 CeO2 0.3-0.7... Agent: Fay, Sharpe, Fagan, Minnich & Mckee, LLP

20070032366 - Optical glass, precision press molding preform and manufacturing method of the same, optical element and manufacturing method of the same: The optical glass has a refractive index of equal to or greater than 1.65 and an Abbé number ranging from 50 to 60. In the optical glass, as molar basis, a ratio of SiO2 content to B2O3 content is greater than 0.5 and equal to or less than 0.90; a... Agent: Sughrue Mion, PLLC

20070032367 - Lead- and barium-free crystal glass: A lead- and barium-free crystal glass having a refractive index of at least 1.55, with in % by weight, more than 50% and less than 60% SiO2, more than 0.6% and less than 4% B2O3, less than 3% K2O, more than 12% and less than 15% Na2O, more than 4%... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070032368 - Glass composition for improved refining and method: A soda-lime-silica based glass composition for manufacturing on a float line that has a faster refining rate due to the introduction of alkali earth oxides such as BaO, ZnO and/or SrO in the amount of from about 1-4% in total. These oxides replace part or all of the MgO in... Agent: Nixon & Vanderhye, PC

20070032369 - High content cbn materials, compact incorporating the same and methods of making the same: High content CBN materials, compacts incorporating the same and methods of making the same are provided. The CBN materials and CBN material compacts include a CBN material having a W2CO21B6 phase. To form an exemplary material, TiCN is mixed with Al to form a first mixture that is heated under... Agent: Christie, Parker & Hale, LLP

20070032370 - Molded porous ceramic article containing beta-sic and process for the production thereof: The invention relates to a process for the production of a molded porous ceramic article containing β-SiC, which process comprises the following steps: the preparation of a molded article containing silicon and carbon and the subsequent pyrolysis and siliconization of the article containing silicon and carbon to form SiC. The... Agent: Ostrolenk Faber Gerb & Soffen

20070032371 - Silicon carbide based, porous structural material being heat-resistant and super-lightweight: A process for producing a silicon carbide-based heat-resistant, ultra-lightweight, porous structural material having the shape of a spongy porous body.... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070027015 - Nanocrystal oxide/glass composite mesoporous powder or thin film, process for producing the same, and utilizing the powder or thin film, various devices, secondary battery and lithium storing device: The present invention aims to realize (1) manufacture of a mesoporous composite powder or thin film composed of nanocrystalline metal oxide-glass having a three-dimensional structure with a large specific surface area, (2) construction of a porous structure framework with nanocrystalline metal oxide crystal and a slight amount of glass phase... Agent: Howson And Howson

20070027016 - Optical glass: Provided is an optical glass having high refractivity and high dispersibility, having good moldability in precision pressing, and having high transmittance and good internal quality, of which the transmittance reduction with time is prevented. The optical glass has a Pt content of at most 1.5 ppm, and is characterized in... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070027017 - Optical glass, optical element and process for the production thereof: Provided are an optical glass having high-refractivity, low-dispersion and anomalous partial dispersion properties, having excellent processability, being excellent as an anomalous partial dispersion glass for suppressing chromatic aberration, containing P5+, Al3+ and alkaline earth metal ions selected from the group consisting of Mg2+, Ca2+, Sr2+ and Ba2+ as essential cationic... Agent: Nixon & Vanderhye, PC

20070027018 - Optical member made of synthetic quartz glass, and process for its production: A process for producing an optical member made of synthetic quartz glass, wherein the OH group concentration of the optical member is set depending upon the energy density of the laser beam employed, to adjust the ratio R (KJ/cm2-ppb)−1 of the change in the refractive index of the optical member... Agent: C. Irvin Mcclelland Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070027019 - Alkali - free glass and liquid crystal display panel: p

20070027020 - Glass composition for low temperature sintering, glass frit, dielectric composition and multilayer ceramic capacitor using the same: The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following... Agent: Mcdermott Will & Emery LLP

20070027021 - Green glass composition: A glass composition that includes a base glass composition including: SiO2 from 65 to 75 weight percent, Na2O from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, Al2O3 from 0 to 5 weight percent, K2O from 0 to 5... Agent: Jacques B. Miles Ppg Industries, Inc.

20070027022 - High-frequency porcelain compostion, process for producing the same and planar high-frequency circuit: Sintering temperature can be lowered to 1,200° C. by adding from 15% by weight or more to 35% by weight or less of rutile-type titanium dioxide into forsterite. By carrying out sintering at such a low temperature, a sintered product can be obtained in which sintering was carried out while... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070027024 - Filler for ladle sliding and opening/closing device: A filler for a ladle tap hole valve, characterized by comprising a sand and a feldspar to be externally added and mixed together so that the total quantity of alkalis in the filler is 0.3 to 1.5 mass %, the feldspar having a particle size distribution of 0.3 to 1.7... Agent: Greenblum & Bernstein, P.L.C

20070027023 - Refractory composition and process for the repair of a hot refractory wall: The present invention relates to refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2 to 8% of water.... Agent: Vesuvius Usa

20070027025 - Rare earth oxysulfide scintillator and methods for producing same: A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)2O2S, wherein M is a rare earth element, and Ln is at least one element... Agent: Larson Newman Abel Polansky & White, LLP

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,... Agent: Diehl Servilla LLC