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| Number | Title | Issue Date |
| 7442660 | Synthetic fire opal A synthetic fire opal having similar physical and chemical properties as natural fire opal. The synthetic fire opal is colored, hard, and transparent. The synthetic fire opal comprises SiO2 and water. ... | 10/28/2008 |
| 7431908 | Coated spherical tetragonal barium titanate particles and process for producing the same Spherical tetragonal barium titanate particles of the present invention have a perovskite crystal structure, an average particle diameter of 0.05 to 0.5 μm, a particle size distribution σg of not less than 0.70, and a ratio of Ba to Ti of 0.99:1 to 1.01:1. The sph... | 10/07/2008 |
| 7427387 | High-purity quartz powder, process for producing the same, and glass molding Subjects for the invention are to obtain a quartz powder having a high purity and high quality and a process for producing the same and to obtain a glass molding formed by melting and molding the powder and extremely reduced in bubble inclusion. The invention... | 09/23/2008 |
| 7407604 | Nanostructured re-doped SiO-base fluorescent materials and methods for production of same A new class of nanostructured RE-doped SiO2-base materials that display superior fluorescence properties is provided. In particular, high gain combined with a broad and flat spectral band width is observed in material composed of a high fraction of a nano... | 08/05/2008 |
| 7404840 | Chemically stabilized β-cristobalite and ceramic bodies comprising same A method for rigidifying a fiber-based paper substrate for use in the exhaust system of a combustion device. In the method, a green ceramic fiber-based paper substrate is impregnated with an impregnating dispersion. The impregnated substrate is then dried, calcined ... | 07/29/2008 |
| 7381673 | Composite material, wafer holding member and method for manufacturing the same A composite material according to the present invention, is composed of SiC, SiO2, at least one out of Al and Si, with He leak rate of 1.3×10−10 Pa·m3/sec or below, thereby providing a composite material, which has a higher vacuu... | 06/03/2008 |
| 7309674 | 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 co... | 12/18/2007 |
| 7288497 | Ceramic powder A ceramic powder including silicon dioxide, iron oxide, iron, magnesium oxide, aluminum oxide, and a trace element group. The silicon dioxide occupies the powder of total weight from 81% to 86%; the iron oxide occupies the powder of total weight from 12% to 16%; the... | 10/30/2007 |
| 7279222 | Solid-state hydrogen storage systems Improved hydrogen storage materials are disclosed. A first material comprises a hydrogen storage nanomaterial that contains nanoparticles or nanoparticle clusters of a metal that is capable of combining with hydrogen to form a metal hydride. The nanomaterials may be... | 10/09/2007 |
| 7253224 | Silica-based particulates A silica-based particulate material that may contain less than 5 wt. % of a multivalent cation and a method of preparing such a silica-based particulate material. The silica-based particulate material may be characterized as having a median particle size of at least... | 08/07/2007 |
| 7204878 | Refractory mixes containing condensed tannin and furfuryl alcohol, and their uses This invention relates to refractory mixes produced by mixing a refractory material with an organic binder and heating to a temperature of typically from about 50° C. to about 100° C. to form a stable composite granulate. The refractor mixes comprise a major amoun... | 04/17/2007 |
| 7182891 | Non-basic refractory compound as well as its uses This invention concerns a non-basic refractory batch as well as its use. ... | 02/27/2007 |
| 7176153 | Refractory system for glass melting furnaces A refractory system for glass melting furnaces includes alumina, zirconia, and silica mixed with a silica binder. The refractory may be formed as refractory blocks or directly onto the wear portion of a glass melting furnace. The refractory may be formed using casti... | 02/13/2007 |
| 7118802 | Multi-layer ceramic composite material with a thermal-protective effect A two-layer ceramic composite material, wherein the first predominantly load-bearing layer is an oxidic, carbon-free fiber-reinforced ceramic layer which is made by a colloidal process. The second predominantly thermally insulating layer is an oxide-ceramic foam. Th... | 10/10/2006 |
| 7074733 | Unwrought refractory composition, in particular for producing glass furnace hearths An unwrought refractory composition, in particular for producing glass furnace hearths, includes a base mixture comprising in wt. %: 1 to 6% of a hydraulic cement, and 94 to 99% of particles of at least a refractory material mainly consisting of alumina (Al2 | 07/11/2006 |
| 7074731 | Method for producing hydrogen-doped silica powder, hydrogen-doped silica powder obtained from that method for use in a quartz glass crucible It is an object of the present invention to provide a hydrogen-doped silica powder that is useful in the formation of a quartz glass crucible that is capable of pulling a silicon single crystal without causing a state having dislocations in the silicon single crysta... | 07/11/2006 |
| 7063826 | High-purity quartz powder, process for producing the same, and glass molding Subjects for the invention are to obtain a quartz powder having a high purity and high quality and a process for producing the same and to obtain a glass molding formed by melting and molding the powder and extremely reduced in bubble inclusion. The invention... | 06/20/2006 |
| 7037870 | Ceramic sintered body and process for producing the same A ceramic sintered body comprising from 90 to 99.8% by volume of cordierite and from 0.2 to 10% by volume of mullite based on 100% by weight of a total sum of the contents of the cordierite and the mullite, and having a density of 2.48 g/cm3 or more. ... | 05/02/2006 |
| 7030049 | Radiopaque cationically polymerizable compositions comprising a radiopacifying filler, and method for polymerizing same Polymerizable compositions that include: (a) a cationically active functional group; (b) an initiation system capable of initiating cationic polymerization of the cationically active functional group; and (c) a filler composition that includes various radiopacifying... | 04/18/2006 |
| 7015168 | Low dielectric constant fluorine and carbon-containing silicon oxide dielectric material characterized by improved resistance to oxidation The invention provides a process for forming a low k fluorine and carbon-containing silicon oxide dielectric material by reacting with an oxidizing agent one or more silanes containing one or more organofluoro silanes having the formula SiR1R2R... | 03/21/2006 |
| 7011888 | Process for protecting fiber-reinforced carbon-containing composites against oxidation Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite... | 03/14/2006 |
| 6998452 | Controlled free radical agent for nanocomposite synthesis This invention relates to a process for producing a free radical control agent of the structural formula: wherein Z is selected from the group consisting of wherein R1... | 02/14/2006 |
| 6987077 | Fired spinel complex oxide and method for preparing the same A fired spinel complex oxide is produced by firing a mixture containing a slag by-produced in chromium refining, a reducer, and a silica-containing material, and is essentially composed of: 29 to 40 percent by weight of Fe2O3; 15 to 20 percent ... | 01/17/2006 |
| 6969546 | Thermal insulation system employing oxide ceramic matrix composites A ceramic tile includes a ceramic core material and an oxide ceramic matrix composite (CMC), where the ceramic core material has at least one surface covered by the oxide CMC. The oxide CMC includes a ceramic fiber, with a cured metal oxide ceramic material impregna... | 11/29/2005 |
| 6946416 | Fused silica having improved index homogeneity Fused silica articles exhibiting improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum. The articles also exhibit induced transmission when irradiated ... | 09/20/2005 |
| 6921578 | Low-reflection glass article A low reflection film comprising silica fine particles and a binder in a weight ratio proportion of 60:40 to 95:5 is obtained by mixing starting fine particles comprising at least non-aggregated silica fine particles with a mean particle size of 40-1000 nm and/or li... | 07/26/2005 |
| 6908879 | Ceramic article, carrier for catalyst, methods for production thereof, catalyst for producing ethylene oxide using the carrier, and method for producing ethylene oxide A ceramic article is disclosed which contains aluminum, silicon, and titanium in a total amount of at least 99% by weight as reduced to the oxides (Al2O3+SiO2+TiO2) and assumes an acidic color in methyl red, an indicator o... | 06/21/2005 |
| 6899857 | Method for forming a region of low dielectric constant nanoporous material using a microemulsion technique A method for forming a region of low dielectric constant nanoporous material is disclosed. In one embodiment, the present method includes the step of preparing a microemulsion. The method of the present embodiment then recites applying the microemulsion to a surface... | 05/31/2005 |
| 6872675 | Method for the production of macroporous ceramics Macroporous ceramics were produced using the droplets of an emulsion as the templates around which the ceramic is deposited through a sol-gel process. Subsequent aging, drying and calcination yields a ceramic with pores in the range of 0.1 to several micrometers whi... | 03/29/2005 |
| 6872677 | Brick additives and methods for using same A brick additive and methods for using the brick additive are disclosed. The additive may include an internal porosity. The internal porosity may display an intra-granular internal porosity in which at least some of the pores are interconnected via an open network o... | 03/29/2005 |
| 6852271 | Flexible insulation blanket having secondarily bonded ceramic matrix composite layer A flexible insulation blanket having a smoothly surfaced, secondarily bonded, ceramic matrix composite (CMC) outer layer, and a method of producing a flexible insulation blanket having a secondarily bonded CMC layer by forming a CMC prepreg layer comprising a woven ... | 02/08/2005 |
| 6849114 | Dispersion comprising silicon/titanium mixed oxide powder, and green bodies and shaped glass articles produced therefrom Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m2/g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-re... | 02/01/2005 |
| 6846763 | Refractory repair material batch A refractory repair batch material includes a refractory, in particular a basic resistor component in granule form and a binder system. The binder system contains at least one hard bitumen component in granule form, at least one ignitable metal powder and at least o... | 01/25/2005 |
| 6844057 | Method for secondarily bonding a ceramic matrix composite layer to a flexible insulation blanket and an insulation blanket produced thereby A flexible insulation blanket having a smoothly surfaced, secondarily bonded, ceramic matrix composite (CMC) outer layer, and a method of producing a flexible insulation blanket having a secondarily bonded CMC layer by forming a CMC prepreg layer comprising a woven ... | 01/18/2005 |
| 6777360 | Ceramic material, method of producing same, and formed product thereof A ceramic material suitable for use in production of paving tiles, construction tiles, flooring in offices, flooring in machinery plants and so forth is obtained by a method comprising steps of mixing defatted bran derived from rice bran with a thermosetting resin b... | 08/17/2004 |
| 6773618 | Microporous thermal insulation molding containing electric-arc silica A thermal insulation molding having a density of 150-500 kg/m3, includes a thermal insulation material, containing 5%-75% by weight of pyrogenic silica (HDK), 5%-50% by weight of electric-arc silica, 5%-50% by weight of opacifier, wherein the electric-arc... | 08/10/2004 |
| 6753299 | Composite silica proppant material An improved lightweight and highly permeable proppant composition for use in increasing the productivity of a gas or oil well. The proppant composition includes equal amounts by weight of uncalcined bauxite, uncalcined shale and quartz, held together with a binder f... | 06/22/2004 |
| 6709999 | Molded part of ceramic material derived from polymers, process for producing ceramic molded parts and sliding element having a molded part A molded part of a ceramic material derived from polymers includes a composite body of a single-phase or multi-phase, amorphous, partially crystalline or crystalline matrix of silicon carbide (SiC), silicon nitride (Si3N4), silicon dioxide (SiO... | 03/23/2004 |
| 6689202 | Molds for the manufacture of a dental restoration and methods of making dental restorations Blocks of material are prepared in a variety of shapes and sizes to be used in the fabrication of models for dental restorations. The material comprises a partially sintered ceramic material. The blocks are used to manufacture molds using CAD/CAM methods ... | 02/10/2004 |
| 6679945 | Pyrogenically prepared silicon dioxide Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value)D50ࣙ150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) ηࣘ100 m.multidot.Pas 3... | 01/20/2004 |
