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Compositions: ceramic April category listing, related patent applications 04/09

20090111677 - Optical glass: An optical glass consisting essentially of B2O3 in an amount of 10-40 wt %, SiO2 in an amount less than or equal to 5 wt %, ZnO in an amount less than or equal to 15 wt %, SrO in an amount less than or equal to 9 wt %,... Agent: Burr & Brown

20090111678 - High resistivity silicon carbide: A recrystallized silicon carbide body is provided that has a resistivity of not less than about 1E5 Ωcm and a nitrogen content comprising nitrogen atoms bonded within the body, wherein the nitrogen content is not greater than about 200 ppm.... Agent: Larson Newman Abel Polansky & White, LLP

20090111679 - Low creep refractory ceramic and method of making: A method is disclosed for manufacturing a zircon composition, the method comprising contacting a zircon powder with a sintering aid, wherein the sintering aid is in the form of a liquid, a sol, or a combination thereof. Also disclosed are methods for forming the zircon composition into a desired shape... Agent: Corning Incorporated

20090111680 - Dielectric porcelain composition for use in electronic devices: ABSTRACT The invention intends to provide a dielectric porcelain composition for use in electronic devices which can be controlled in the temperature coefficient πf in particular in a negative direction and can shorten a sintering period while maintaining a high Qf value and a high dielectric constant. According to the... Agent: Stein, Mcewen & Bui, LLP

20090105060 - Composition for ceramic substrate, ceramic substrate, method for process for producing ceramic substrate, and glass composition: A ceramic substrate composition is provided which can be co-fired with a low-melting metal and exhibits excellent dielectric characteristics at high frequencies, particularly tens of gigahertz. The ceramic substrate composition mainly contains a glass represented by aB2O3-bRe2O3-cZnO, wherein the molar ratios (a, b, and c) fall within a region defined... Agent: Dickstein Shapiro LLP

20090105061 - Glass composition and glass spacer using the same: The present invention provides a glass composition that has good formability and tends not to cause electric-field breakdown when formed into a spacer for an electron beam-excited display. The present invention relates to a glass composition that contains the following components, in terms of mass %: 20≦SiO2<40, 6<B2O3≦30, 0≦Al2O3≦20, 45≦(SiO2+B2O3+Al2O3)≦74,... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20090105062 - Sintered wear-resistant boride material, sinterable powder mixture, for producing said material, method for producing the material and use thereof: e

20090105063 - Dielectric ceramic composition: There is provided a dielectric ceramic composition having a high relative permittivity, a high frequency-quality factor, a small absolute value temperature coefficient, a low sintering temperature, and unreactivity with an internal conductor material. The dielectric ceramic composition comprises a main component represented by general formula xZnOxNlb2O5yCaTiO3zCaO, wherein 37≦x≦50, 10≦y≦60, 3≦z≦40,... Agent: The Webb Law Firm, P.C.

20090105064 - Semiconductor ceramic composition and method for producing the same: BaTiO3 calcined powder and (BiNa)TiO3 calcined powder, which contain no semiconductive dopant, are prepared separately, the calcined powders are mixed, crushed, formed, and then sintered in an inert gas atmosphere having an oxygen concentration of 1% or less to obtain a semiconductor ceramic composition represented by a composition formula: [(BiNa)xBa1-x]TiO3... Agent: Stein, Mcewen & Bui, LLP

20090105065 - Light emitting device with a ceramic garnet material: The invention relates to a light emitting device, especially a LED comprising a ceramic garnet material.... Agent: Philips Intellectual Property & Standards

20090098997 - Production of a self-supporting glass film: A process for the production of a self-supporting glass film is described. The method includes the steps of preparing a mixture containing a colloidal silica sol, at least one alkanolamine organic additive and an organic binder; coating the mixture onto a base material; drying the coated mixture to form a... Agent: 3m Innovative Properties Company

20090098998 - Method of manufacturing a glass substrate, glass substrate manufactured by the method, and magnetic recording medium using the glass substrate: p

20090098999 - Pavement marking, reflective elements, and methods of making microspheres: Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium... Agent: 3m Innovative Properties Company

20090099000 - Vial and method for producing the same: To provide a vial with low alkali elution and a method for producing the same by removing a deteriorated region caused by processing on an internal surface of a vial. A vial with reduced alkali elution and a method for producing the same by forming vials from borosilicate glass tubes... Agent: Birch Stewart Kolasch & Birch

20090099001 - Borosilicate glass compositions and uses thereof: Glass, glass compositions, methods of preparing the glass compositions, microfluidic devices that include the glass composition, and methods of fabricating microfluidic devices that include the glass composition are disclosed. The borosilicate glass composition includes silicon dioxide (SiO2) in a range from about 60% to 74% by total composition weight; boric... Agent: Corning Incorporated

20090099002 - Optical glass, preform for precision press molding, method for manufacturing preform for precision press molding, optical element, and method for manufacturing optical element: The present invention relates to an optical glass having optical constants in the form of a refractive index nd of 1.70 or higher and an Abbé number nud of 50 or higher, a preform for precision press molding comprised of this glass, an optical element comprised of this glass, and... Agent: Sughrue Mion, PLLC

20090099003 - Ceramic molded product and manufacturing method thereof: A method of manufacturing a ceramic molded product includes adding a binder mainly comprising a saccharide and water to a powder of ceramics such as silicon carbide and stirring the same to form an aqueous sludge having a fluidity, casting the sludge into an elastic die, molding the sludge while... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090093356 - Optical glass: Optical glass constituted by an amorphous matrix and crystal grains dispersed in the amorphous matrix, wherein the amorphous matrix comprises a first oxide of at least one of silicon oxide and phosphor oxide and a second oxide of at least one of titanium oxide and zirconium oxide, and wherein the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090093357 - Optical glass and lens using the same: The invention provides: an optical glass which comprises, in terms of % by mass on the basis of oxides, 13-27% of B2O3, 20-35% of La2O3, 5-25% of Gd2O3, 5-20% of ZnO, 0.5-3% of Li2O, 0.5-15% of Ta2O5 and 0.5-10% of WO3, wherein the value of (SiO2+B2O3)/(ZnO+Li2O), which is the mass... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090093358 - Porous silicone carbide: A porous refractory product includes a matrix of sintered silicon carbide having a porosity of about 45% to about 65%. The matrix is formed by heating in a noble gas atmosphere a cast preform including a mixture of alpha-silicon carbide and boron carbide each having a particle size of less... Agent: Rankin, Hill & Clark LLP

20090088314 - Dielectric ceramic composition: A dielectric ceramic composition comprising forsterite in an amount of 93.0 to 99.0 mol % when calculating in terms of 2MgO—SiO2 and calcium titanate in an amount of 1.0 to 7.0 mol % when calculating in terms of CaTiO3 as main components, and as a subcomponent, aluminum oxide in an... Agent: Oliff & Berridge, PLC

20090088315 - Dielectric ceramic composition and an electric device: d