Compositions: ceramic inventions 02/09

20090048087 - High-density pressurelessly sintered zirconium diboride/silicon carbide composite bodies and a method for producing the same: A method of sintering a ZrB2—SiC composite body at ambient pressures, including blending a first predetermined amount of ZrB2 powder with a second predetermined amount of SiC powder, wherein both powders are characterized by the presence of surface oxide impurities. Next the blended powders are mixed to yield a substantially... Agent: Brannon & Associates PC

20090048088 - Fire resistant glass fiber: A glass fiber composition comprises about 52-65 weight % SiO2; less than or equal to 4 weight % Al2O3; about 7-16 weight % Fe2O3; greater than 6 weight % and less than or equal to about 14 weight % R2O; about 6-25 weight % CaO; less than or equal to... Agent: Johns Manville

20090048089 - Process for production of ceramic porcelains, ceramic porcelains and electronic components: 0.5 to 30 parts by weight of a hexagonal celsian powder is added to 100 parts by weight of a ceramic raw material powder to give a mixture. The mixture is sintered to give a ceramic porcelain so as to precipitate monoclinic celsian in the ceramic porcelain.... Agent: Burr & Brown

20090048090 - Single crystal material and process for producing the same: The invention intends to provide a single crystal material that can be used as a dielectric material for use in electronic devices, which has a high Qf value; and a process for producing the same. According to the invention, a single crystal of a composite oxide is obtained from a... Agent: Stein, Mcewen & Bui, LLP

20090048091 - Fire resistant glass fiber: A glass fiber composition comprises about 33-47 weight % SiO2; about 18-28 weight % Al2O3; about 5-15 weight % Fe2O3; greater than or equal to about 2 weight % and less than 10 weight % R2O; about 8-30 weight % CaO; and less than 4 weight % MgO; wherein R2O... Agent: Johns Manville

20090042709 - Process for preparing batch materials for the manufacture of glass: (iii) a conversion reaction (2) in which said sulfates together with silica are converted into the corresponding silicates, the heat supply needed for this conversion being provided, at least in part, by a combustion reaction (3) using a submerged burner or a plurality of submerged burners.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090042710 - Glass-ceramics and method for manufacturing the same: There are provided glass-ceramics comprising, in mass %, 50-60% SiO2, 22-26% Al2O3 and 3-5% Li2O, having an average crystal grain diameter exceeding 100 nm, and having an average linear thermal expansion coefficient of 30×10−7/° C. or below within a temperature range of 0° C. to 50° C. These glass-ceramics are... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090042712 - Blue glass composition intended for the manufacture of windows: e

20090042711 - Optical glass, precision-pressmolding preform and optical element:

20090042713 - 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

20090042714 - 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

20090042715 - Lead-free bismuth glass: An object of the present invention is to provide a lead-free bismuth glass wherein decrease of the degree of accuracy of the patterning is prevented. Specifically, the present invention provides a lead-free bismuth glass characterized in that said lead-free bismuth glass is used for an optical patterning glass material which... Agent: E.i. Du Pont De Nemours And Company Legal Patent Records Center

20090042716 - High temperature reactor for the poduction of nanophase wc/co powder: A method for producing a nanostructured cermet material, including the steps of preparing an aqueous solution mixture of precursor compounds of the cermet material, introducing the solution mixture into a heated tubular reactor in the form of a fine-particle aerosol, and processing the solution mixture in the heated tubular reactor... Agent: Kenneth Watov Watov & Kipnes

20090036289 - Optical composite material and method for its production: An optical composite material comprises an amorphous optical material (6) with a first refractive index (na), into which crystalline nanoparticles (7) having a second, higher refractive index (nn) are embedded, wherein the amorphous material (6) and the nanoparticles (7) are resistant to UV radiation. A microlithography projection exposure apparatus comprises... Agent: Sughrue Mion, PLLC

20090036290 - Glass compositions compatible with downdraw processing and methods of making and using thereof: Described herein are alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs). The glass compositions possess numerous properties that are compatible with the downdraw process, particularly fusion drawing.... Agent: Corning Incorporated

20090036291 - Grinding beads and method of producing the same: s

20090036292 - Plasma-resistant ceramics with controlled electrical resistivity: Specialty ceramic materials which resist corrosion/erosion under semiconductor processing conditions which employ a corrosive/erosive plasma. The corrosive plasma may be a halogen-containing plasma. The specialty ceramic materials have been modified to provide a controlled electrical resistivity which suppresses plasma arcing potential.... Agent: Shirley L. Church, Esq.

20090036293 - Semiconductor ceramic composition: It is intended to provide a semiconductor ceramic composition containing no Pb, which is capable of shifting the Curie temperate to a positive direction as well as of controlling room temperature resistivity and having an excellent jump characteristic. Since the semiconductor ceramic composition in which a portion of Ba of... Agent: Stein, Mcewen & Bui, LLP