Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8142753 | Pyrogenic silica produced in a production facility with high capacity A large scale process for preparing fumed silica with consistent product parameters wherein a silica precursor compound is fed to a burner at ≧100 Kg/h along with a combusting gas at ≧300 m3/h and a combustible gas at ≧100 m3/h, with a no... | 03/27/2012 |
| 8038971 | Fumed silica of controlled aggregate size and processes for manufacturing the same The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/... | 10/18/2011 |
| 7910081 | Process for the production of fumed silica The invention provides a process for the production of fumed silica. The process comprises providing a silicon halide feedstock comprising about 80% to 100% methyltrichlorosilane, combining the silicon halide feedstock with hydrogen gas and oxygen gas to form a reac... | 03/22/2011 |
| 7615201 | Spherical particles of silica-containing compound oxide and method of production By using a halogen-free siloxane and an organometallic compound containing at least one metal other than silicon as feed stocks, and simultaneously atomizing and burning them in a flame, spherical particles of silica-containing compound oxide are prepared which are ... | 11/10/2009 |
| 7585481 | Method for producing amorphous silica ash The invention provides apparatus and a method for exothermic treatment of feed material to provide an ash. The apparatus includes a housing extending about a central axis and having first and second ends, and a central mixing zone adjacent the first end. A material ... | 09/08/2009 |
| 7572423 | Fumed metal oxide particles and process for producing the same The invention provides a process for producing fumed metal oxide particles comprising providing a stream of a liquid feedstock comprising a volatizable, non-halogenated metal oxide precursor, providing a stream of a combustion gas having a linear velocity sufficient... | 08/11/2009 |
| 7439298 | Pyrogenically produced silicon dioxide powder and silicone sealing compound containing this powder Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 150±15 m2/g, wherein the aggregates display an average surface area of 12000 to 20000 nm2, an average equivalent circle d... | 10/21/2008 |
| 7438882 | Gel and powder making A method of forming a gel and/or powder of a metallic oxide, metalloid oxide and/or a mixed oxide or resin thereof from one or more respective organometallic liquid precursor(s) and/or organometalloid liquid precursor(s) by oxidatively treating said liquid in a non-... | 10/21/2008 |
| 7351388 | Pyrogenically produced silicon dioxide powder Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 300±25 m2/g, wherein the aggregates display an average surface area of 4800 to 6000 nm2, an average equivalent circle dia... | 04/01/2008 |
| 7332144 | Hydrophobic silica fine powder and making method A hydrophobic silica fine powder is prepared by premixing a hydrophilic silica fine powder with a dimer diol siloxane or cyclic siloxane as a hydrophobizing agent, mixing them in a ball mill for achieving dispersion and for achieving cleavage or disintegration and c... | 02/19/2008 |
| 7255843 | Low viscosity-increment fumed-silica and its slurry A fumed-silica, which can make a slurry having sufficient wettability to a polar liquid, excellent dispersibility, and low viscosity even in the high concentration, and a slurry thereof. A fumed-silica and its slurry are provided, wherein the water content is contro... | 08/14/2007 |
| 7229927 | Semiconductor processing silica soot abrasive slurry method for integrated circuit microelectronics The invention utilizes colloidal silica soot (62) in a semiconductor process for chemical-mechanical planarizing a semiconductor integrated circuit workpiece (24) with a slurry (60). The particulate abrasive agent colloidal solid sphere fused si... | 06/12/2007 |
| 7214363 | Method for preparing composite microparticles Composite microparticles having thin coating layers can be simply prepared by bringing a host particle precursor into contact with a flame generated in a burner movably mounted at the bottom of a coating apparatus, by introducing the precursor in the form of a vapor... | 05/08/2007 |
| RE39535 | Method of making fused silica by decomposing siloxanes This invention relates to the production of high purity fused silica glass through oxidation or flame hydrolysis of a vaporizable silicon-containing compound. More particularly, this invention is directed to the use of vaporizable, halide-free compounds in said prod... | 04/03/2007 |
| 7192461 | High concentration silica slurry A high concentration silica slurry can be used for polishing of substrates, such as semiconductor materials. The slurry contains a silica powder dispersed in an solvent. The silica slurry has a silica concentration of more than 50% by weight and a viscosity of less ... | 03/20/2007 |
| 7166157 | Method for the surface treatment of a titanium dioxide pigment A method and material for improved TiO2 pigment for paper and laminates is described. Phosphorous, titanium, and aluminum compounds are successively added to a TiO2 pigment suspension. Resulting pigments show improved greying resistance and hid... | 01/23/2007 |
| 7144628 | Spherical silica-titania-based fine particles surface-treated with silane, production process therefor, and external additive for electrostatically charged image developing toner using same Spherical silica-titania-based fine particles surface-treated with silane are provided. The fine particles have a titanium atom content of 0.001 to 5% by weight, a frictional electrification with iron powder of −100 to −300 μC/g, a bulk density of 0.2 to 0.4 g/... | 12/05/2006 |
| 7108771 | Method for removal of impurities in cyclic siloxanes useful as precursors for low dielectric constant thin films A process for reducing the level(s) of water and/or other impurities from cyclosiloxanes by either azeotropic distillation, or by contacting the cyclosiloxane compositions with an adsorbent bed material. The purified cyclosiloxane material is useful for forming low-... | 09/19/2006 |
| 7090815 | Nanometer engineering of metal-support catalysts A method of forming a catalyst body by forming a first layer of hemispherical grain polysilicon over a substrate, and oxidizing at least a portion of the first layer to form a second layer of silica. Additionally, forming a third layer of nitride material over the s... | 08/15/2006 |
| 7090821 | Metal oxide powder for high precision polishing and method of preparation thereof The present invention relates to a metal oxide powder for high precision polishing and prepartion thereof, comprising aggregates formed by cohesion of primary particles, which has a cohesive degree (α) of 1.1 to 2.0 and a cohesive scale (β) of 3 to 10, the cohesiv... | 08/15/2006 |
| 7089766 | Method of forming optical fiber preforms Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphe... | 08/15/2006 |
| 7083770 | Amorphous, fine silica particles, and method for their production and their use The amorphous-silica particle having 0.1–0.7 μm of the average particle diameter, 5–30 m2/g of the specific surface area, less than 40% of the dispersion coefficient, and 20 μC/m2 of the absolute value of the triboelectrostatic charge, ca... | 08/01/2006 |
| 7066977 | Flame synthesis and non-vacuum physical evaporation A method for producing fine or ultra fine powder particles comprising mixing a metal alkoxide with a non-metallic hydride in an organic solvent, agitating the mixed solution, and then burning the mixed solution. The burning process comprises igniting the solution di... | 06/27/2006 |
| 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 |
| 6994834 | Surface-modified fine silica powder and use thereof A surface modified fine silica powder which has been treated, preferably, with a treating agent containing an amino group, characterized in that the powder exhibits an adsorption amount for an anion source compound of 150% or more of that of an original powder which... | 02/07/2006 |
| 6951636 | Nanometer engineering of metal-support catalysts A method of forming a catalyst body by forming a first layer of hemispherical grain polysilicon over a substrate, and oxidizing at least a portion of the first layer to form a second layer of silica. Additionally, forming a third layer of nitride material over the s... | 10/04/2005 |
| 6932953 | Particulate silica and its preparation Particulate silica is prepared by feeding a gas mixture of an organohalosilane gas, a flammable gas capable of generating water vapor when burned, and a free oxygen-containing gas to a reaction chamber through a multiple-tube burner, whereby the organohalosilane is ... | 08/23/2005 |
| 6893621 | Lithium-containing silicon oxide powder and making method A lithium ion secondary cell having a high capacity, improved first charge/discharge efficiency and improved cycle performance is obtainable using as the negative electrode material a lithium-containing silicon oxide powder having the formula: SiLixO... | 05/17/2005 |
| 6872402 | Bactericidal silicon dioxide doped with silver Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/g... | 03/29/2005 |
| 6858195 | Process for forming a low dielectric constant fluorine and carbon-containing silicon oxide dielectric material 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 that include one or more organofluoro silanes selected from: (a) an organofluoro silane cont... | 02/22/2005 |
| 6763683 | Method for pure, fused oxide A method and furnace are described for producing a fused oxide body by decomposing a precursor compound of the oxide in a flame to form molten oxide particles and collecting those particles in a furnace constructed of a refractory material to form a fused oxide body... | 07/20/2004 |
| 6759160 | Silicon oxide powder and making method A silicon oxide powder represented by the formula: SiOx wherein 1.05≦x≦1.5 and having a BET specific surface area of 5-300 m2/g is useful as a negative electrode material to construct a lithium ion secondary cell having a high capacity and improved cy... | 07/06/2004 |
| 6749823 | Method for producing hydrophobic silica fine powder Hydrophobic silica fine powder is produced by pyrolyzing a silane compound to form a silica fine powder and hydrophobizing the silica fine powder with an organohalosilane in a fluidization vessel. Hydrophobized silica fine powder which flies out of the fluidization ... | 06/15/2004 |
| 6705127 | Methods of manufacturing soot for optical fiber preforms and preforms made by the methods The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous... | 03/16/2004 |
| 6702994 | Method and apparatus for production of amorphous silica from silicon and silicon containing materials The present invention relates to a method for production of amorphous silica from particulate materials containing at least 50% elemental silicon, where the silicon-containing material is supplied to a combustion reactor which is heated by an oil- or gas ... | 03/09/2004 |
| 6696035 | Method for production of white microsilica The present invention relates to a method for producing microsilica having a reflectivity between 65 and 90% in a smelting furnace for production of ferrosilicon or silicon by using a charge comprising an SiO2 source and a solid carbonaceous re... | 02/24/2004 |
| 6696036 | Method of making silica from rice bran A method for extracting silica of more than 99.99% purity from rice bran includes the steps of: washing rice bran in water and removing impurities floated on the water; sequentially washing the rice bran in an acid solution and water more than twice; dehy... | 02/24/2004 |
| 6696034 | Method for producing hydrophobic silica fine powder Hydrophobic silica fine powder is produced by pyrolyzing a silane compound to form a silica fine powder and hydrophobizing the silica fine powder with an organohalosilane as hydrophobizing agent in a fluidization vessel. A portion of the silica fine powde... | 02/24/2004 |
| 6622523 | Method of converting halogenated compounds to glass The present invention provides a two stage process of thermal separation of CFCs and HCFCs followed by vitrification of the waste into a commercially viable glass. In the first stage, the hydrogenated compounds are reacted at elevated temperature with wat... | 09/23/2003 |
| 6588230 | Sealed, nozzle-mix burners for silica deposition Burners (40) for producing fused silica boules are provided. The burners employ a tube-in-tube (301-306) design with flats (56, 50) on some of the tubes (305, 301) being used to limit the cross-sectional area of certain passages (206, 202) within the burn... | 07/08/2003 |
