Compositions: ceramic inventions 06/07

20070149381 - Optical glass: P

20070149379 - Crystallizable glass and crystallized glass of li2o-a12o3-sio2 system and method for producing crystallized glass fo li2o-a12o3-sio2 system: A crystallizable glass of Li2O—Al2O3—SiO2 system is provided, which can be crystallized by a crystallization process at a lower temperature to produce crystallized glass of Li2O-Al2O3—SiO2 system with excellent thermal characteristics. The crystallizable glass of Li2O—Al2O3—SiO2 system which consists essentially of, by weight percentages, SiO2—58.0˜66.0 wt %; Al2O3—18.0˜26.0 wt %;... Agent: Martine Penilla & Gencarella, LLP

20070149380 - Method of eliminating blisters in a glass making process: A method of controlling blister formation in a glass melt flowing through a system comprising one ore more refractory metal vessels by developing a blister index and determining the critical blister index value. The critical value of the blister index may be used to control the principal variables responsible for... Agent: Corning Incorporated

20070149382 - Dielectric ceramic composition, electronic device, and multilayer ceramic capacitor: A dielectric ceramic composition including dielectric particles comprising a main ingredient phase having barium titanate as its main ingredient and a diffusion phase present at the periphery of said main ingredient phase, wherein when an average value of the depth where sub ingredient elements present at said diffusion phase diffuses... Agent: Oliff & Berridge, PLC

20070149383 - Ceramic material, compositions and methods for manufacture thereof: The present invention relates to a method of producing a ceramic material comprising the steps of: a) mixing a first clay composition comprising silica and a silicate mineral with a second clay composition; and b) firing the mixed clay composition from step a) to form a ceramic product. The present... Agent: Merchant & Gould PC

20070142199 - Glass ceramic: A glass ceramic is specified, with a crystalline phase consisting predominantly of BPO4, and preferably exclusively of BPO4. The glass ceramic contains 10 to 50 wt.-% SiO2, 5 to 40 B2O3, 25 to 75 wt.-% P2O5, up to 5 wt.-% refining agents, up to 1 wt.-% impurities, and 0.1 to... Agent: Harness, Dickey & Pierce, P.L.C

20070142200 - Glass and optical glass element: Disclosed herein is a glass whose viscosity index (A) defined as a value obtained by dividing the viscosity of the glass at the liquidus temperature thereof by the liquidus temperature of the glass is in the range of 0.0004 to 1.5. Such a glass is melted in a melting furnace... Agent: Brinks Hofer Gilson & Lione

20070142201 - Multi-component glass: A multi-component glass which, in addition to the components TiO2 and SiO2, comprises a further component from the group consisting of glass-forming agents and/or intermediate oxides is prepared by preparing mixtures of the starting components and reacting these to give the desired compositions, or treating a green body with a... Agent: Venable LLP

20070142202 - Fabrication of ceramic microstructures: The invention provides ceramic molded solid articles and methods for making these articles on the micron scale. Articles are molded from ceramic precursors, optionally using molds including at least one portion that is elastomeric.... Agent: Wolf Greenfield & Sacks, P.C.

20070142203 - Nanoscale ceramic composites and methods of making: A method of forming a nanoscale ceramic composite generally includes modifying a polymeric ceramic precursor, mixing the modified polymeric ceramic precursor with a block copolymer to form a mixture, forming an ordered structure from the mixture, wherein the modified polymeric ceramic precursor selectively associates with a specific type of block... Agent: General Electric Company Global Research

20070142205 - Aluminum nitride powder, aluminum nitride-based ceramic sintered body, member for semiconductor manufacturing device, aluminum nitride luminescent material, and method of manufacturing aluminum nitride powder: 100 g of aluminum nitride (AlN) powder and 2.0 g of aluminum oxide (Al2O3) powder were placed in graphite crucible. Thereafter, the entire crucible was treated with heat by keeping it in a nitrogen atmosphere at a temperature of 2200° C. and a pressure of 1.5 kgf/cm2 for 2 hours.... Agent: Burr & Brown

20070142204 - Crystalline composition, device, and associated method: A composition including a polycrystalline metal nitride having a number of grains is provided. These grains have a columnar structure with one or more properties such as, an average grain size, a tilt angle, an impurity content, a porosity, a density, and an atomic fraction of the metal in the... Agent: General Electric Company Global Research

20070142206 - Dental ceramics and method for the manufacture thereof: In dental ceramics containing zirconium dioxide and sili-con-dioxide with a Zr/Si ratio of between 0.5 and 1.0, 1 to 12 wt % of aluminum oxide and up to 2 wt % of an alkali - or earth alkali metal oxide, those materials are selectively mixed with yttrium-stabilized zirconium dioxide with... Agent: Klaus J. Bach

20070142207 - Sag control of isopipes used in making sheet glass by the fusion process: Isopipes for use in making sheet glass by a fusion process are provided which exhibit reduced sag. The isopipes are composed of a zircon refractory which has a mean creep rate (MCR) at 1180° C. and 250 psi and a 95 percent confidence band (CB) for said mean creep rate... Agent: Corning Incorporated

20070142208 - High porosity cordierite ceramic honeycomb article and method: The present invention provides materials and methods for the manufacture of high porosity ceramic exhaust filters employing relatively low amounts of pore formers, the filters combining efficient diesel particulate filtration with effective support for exhaust emissions control catalysts. Cordierite-forming ceramic batches comprising non-hydrated transition alumina powders of relatively large particle... Agent: Corning Incorporated

20070142209 - Dielectric ceramic composition, electronic device, and multilayer ceramic capacitor: A dielectric ceramic composition including dielectric particles and grain boundary phases present among these dielectric particles, wherein when measuring a concentration of Si and/or element “A” contained in the grain boundary phases (where, “A” is at least one element selected from cationic elements with an effective ion radius in sixfold... Agent: Oliff & Berridge, PLC

20070142210 - Dielectric ceramic and monolithic ceramic capacitor: The dielectric ceramic has a composition represented by general formula 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3+aBaO+bR2O3+cMgO+dMnO+eCuO+fV2O5+gXuOv (where R is a rare-earth element such as La, Ce or Pr; and XuOv is an oxide group including at least Si); and 0≦x≦0.05, 0≦y≦0.08 (preferably 0.02≦y≦0.08), 0≦z≦0.05, 0.990≦m, 100.2≦(100 m+a)≦102, 0.05≦b≦0.5, 0.05≦c≦2, 0.05≦d≦1.3, 0.1≦e≦1.0, 0.02≦f≦0.15, and 0.2≦g≦2. With... Agent: Dickstein Shapiro LLP

20070135290 - Metal oxide ceramic and method of making articles therewith: Disclosed herein is a ceramic comprising: at least two different metal oxides, the at least two different metal oxides comprising TiO2 and La2O3 or TiO2 and BaO; less than 20% by weight SiO2; less than 20% by weight B2O3; and less than 40% by weight P2O5; the ceramic having a... Agent: 3m Innovative Properties Company

20070135291 - Mineral wool composition: s

20070135292 - Boron carbide based sintered compact and method for preparation thereof: A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtained by sintering a mixed powder of a B4C powder, a... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070135293 - Aluminum nitride ceramic, semiconductor manufacturing member, and manufacturing method for aluminum nitride ceramic: An aluminum nitride ceramic including aluminum nitride grains and grain boundary phases comprises a grain boundary phase-rich layer including more amount of the grain boundary phases in a surface layer of the aluminum nitride ceramic than in an inside of the aluminum nitride ceramic. The grain boundary phases in the... Agent: Burr & Brown

20070135294 - Dielectric ceramic material and multilayer ceramic capacitor: A dielectric ceramic material comprising the composition: 100(Ba1-xCax)mTiO3+aMnO+bCuO+cSiO2+dMgO+eRO (wherein coefficients 100, a, b, c, d, and e each represent mols; m represents the molar ratio of (Ba1-xCax) to Ti; and RO represents at least one rare-earth element oxide selected from Y2O3, La2O3, 2CeO2, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3,... Agent: Dickstein Shapiro LLP

20070135295 - Dielectric ceramic, method for manufacturing dielectric ceramic, and monolithic ceramic capacitor: Dielectric ceramic having a high dielectric constant of 5,500 or more and exhibiting good dielectric constant temperature characteristic, and a small, high-capacitance monolithic ceramic capacitor having an electrostatic capacitance temperature characteristic satisfying the X5R characteristic are provided. The dielectric ceramic includes a BaTiO3 based or (Ba,Ca)TiO3 based primary component, a... Agent: Dickstein Shapiro LLP

20070129231 - Glass, glass-ceramic, articles and fabrication process: The present application discloses: (i) novel glass-ceramic materials containing a solid solution of b-quartz or of β-spodumene as main crystalline phase(s); (ii) articles made from said novel glass-ceramic materials; (iii) lithium alumino-silicate glasses, precursors of such novel glass-ceramic materials; and (iv) methods for preparing the aforesaid novel glass-ceramic materials and... Agent: Corning Incorporated

20070129232 - Ceramic body containing alumina and boron carbide: A ceramic body that includes between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase, and at least about 50 volume percent alumina, and the ceramic body has a fracture toughness (KIC, 18.5 Kg Load E&C) greater than or equal to about 4.5 MPa·m0.5.... Agent: Kennametal Inc.

20070129233 - Ceramic composite material and method for producing same: Highly wear-resistant, low-friction ceramic composites suited for machining-tool, sliding-component, and mold-die materials are made available. The ceramic composites characterized are constituted from a phase having carbon of 3 μm or less, preferably 30 nm or less, average crystal-grain size as the principal component, and a ceramic phase (with the proviso... Agent: Judge & MurakamiIPAssociates