Patents Examined by Serena L Hanor
-
Patent number: 7722849Abstract: Pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm. It is prepared by mixing at least one silicon compound in vapor form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalized rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler.Type: GrantFiled: December 16, 2003Date of Patent: May 25, 2010Assignee: Evonik Degussa GmbHInventors: Martin Moerters, Helmut Mangold, Monika Oswald, Kai Schumacher, Heinz Lach, Gerrit Schneider
-
Patent number: 7692058Abstract: Mercury is removed from contaminated waste by firstly applying a sulfur reagent to the waste. Mercury in the waste is then permitted to migrate to the reagent and is stabilized in a mercury sulfide compound. The stable compound may then be removed from the waste which itself remains in situ following mercury removal therefrom.Type: GrantFiled: December 27, 2004Date of Patent: April 6, 2010Assignee: Brookhaven Science Associates, LLCInventors: Mark Fuhrmann, John Heiser, Paul Kalb
-
Patent number: 7662356Abstract: The present invention provides a method of refining low purity Si by a slag, in particular removing B, which suppresses wear of the reaction vessel due to the slag and produces high purity Si used for solar battery materials etc. at a low cost, comprising adding SiO2 and an alkali oxide or alkali carbonate as a slag material into molten Si to form a slag during which adding one or more types of materials among materials the same as the reaction vessel material used or ingredients included in the reaction vessel material into the slag so as to remove the impurities in the molten Si.Type: GrantFiled: February 9, 2006Date of Patent: February 16, 2010Assignee: Nippon Steel Materials Co., Ltd.Inventors: Shinji Tokumaru, Kensuke Okazawa, Jirou Kondou, Masaki Okajima
-
Patent number: 7662359Abstract: The invention relates to a process for manufacturing a particulate titanium dioxide product, wherein hydrated titanium dioxide is precipitated from an aqueous solution of titanium oxychloride by adding to the solution titanium dioxide particles as crystal nuclei and the product obtained from the precipitation step is isolated and optionally calcined. The process is characterized by the addition of crystal nuclei to an aqueous solution of titanium oxychloride having a content of >90 g TiO2/l calculated as TiO2 and the performance of precipitation at a temperature below the boiling point of the said aqueous solution and at normal pressure. In addition, the invention relates to a titanium dioxide product prepared by using the process, the use of the product as a photocatalyst, and a photocatalyst, which comprises a titanium dioxide product prepared according to the invention.Type: GrantFiled: February 4, 2005Date of Patent: February 16, 2010Assignee: Sachtleben Pigments OyInventors: Saila Mariatta Karvinen, Ralf-Johan Lamminmäki
-
Patent number: 7632778Abstract: An apparatus for producing hydrogen, which comprises: a. a heated steam reforming stage (1) with a reforming catalyst to convert gaseous or vaporizable hydrocarbons and water into hydrogen, carbon monoxide and further reformer products; b. at least one stage downstream of the steam reforming stage for the catalytic conversion of the mixture of hydrogen, carbon monoxide and excess steam leaving the steam reforming stage (shift stage) (2); and c. a fine purification stage (3) downstream of the shift stage(s) for the catalytic lowering of the residual carbon monoxide content of the conversion products by selective methanization, is described. In the apparatus, the shift stage (2) and the fine purification stage (3) are configured as a unitary hollow body (exothermic catalyst stage).Type: GrantFiled: January 17, 2005Date of Patent: December 15, 2009Assignee: Süd-Chemie AGInventors: Klaus Wanninger, Peter Britz, Nicolas Zartenar
-
Patent number: 7628971Abstract: The present invention relates to a highly dispersible silica which has a high surface area, a process to manufacture the aforesaid silica and its use as a tire filler for utility vehicles, motor cycles and high speed vehicles.Type: GrantFiled: July 28, 2008Date of Patent: December 8, 2009Assignee: Degussa AGInventors: Oleg Stenzel, Stefan Uhrlandt, Hans-Detlef Luginsland, Andre Wehmeier
-
Patent number: 7625836Abstract: To provide a heat-resistant oxide which is excellent in heat resistance and durability at high temperature and has high activity, a heat-resistant oxide which has an oxide crystal structure and in which a rate of a solid solution of a noble metal in the oxide crystal structure is 50% or more is obtained by heat-treating (secondarily baking) a precursor composition comprising zirconia, at least one coordinative element selected from the group consisting of rare earth elements, alkaline earth elements, aluminum and silicon, and at least one noble metal selected from the group consisting of platinum, rhodium and palladium at 650° C. or higher.Type: GrantFiled: December 13, 2005Date of Patent: December 1, 2009Assignees: Cataler Corporation, Daihatsu Motor Co., Ltd.Inventors: Satoshi Matsueda, Mareo Kimura, Naoto Miyoshi, Yoshinori Ishii, Hirohisa Tanaka, Isao Tan, Mari Uenishi, Masashi Taniguchi
-
Patent number: 7625840Abstract: A nanoporous catalytic membrane which displays several unique features including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations.Type: GrantFiled: September 14, 2004Date of Patent: December 1, 2009Assignee: UChicago Argonne, LLC.Inventors: Michael J. Pellin, John N. Hryn, Jeffrey W. Elam
-
Patent number: 7622189Abstract: Structures and methods for the fabrication of ceramic nanostructures. Structures include metal particles, preferably comprising copper, disposed on a ceramic substrate. The structures are heated, preferably in the presence of microwaves, to a temperature that softens the metal particles and preferably forms a pool of molten ceramic under the softened metal particle. A nano-generator is created wherein ceramic material diffuses through the molten particle and forms ceramic nanostructures on a polar site of the metal particle. The nanostructures may comprise silica, alumina, titania, or compounds or mixtures thereof.Type: GrantFiled: June 21, 2006Date of Patent: November 24, 2009Assignee: Babcock & Wilcox Technical Services Y-12, LLCInventors: Edward B. Ripley, Roland D. Seals, Jonathan S. Morrell
-
Patent number: 7612015Abstract: A photocatalyst layer (TiO2) is formed on the surface of a substrate (glass plate) through the intermediary of a monoclinic undercoat layer (ZrO2), and no dead layer is substantially present between the photocatalyst layer and the undercoat layer. Also, by providing a peel preventing layer between the substrate and the undercoat layer, it is possible to eliminate film peeling between the photocatalyst layer and the substrate, defects and discoloration. A metal element may be doped in the photocatalyst layer, and it is preferable that the metal element is at least one of Sn, Zn, Mo and Fe. The phrase “no dead layer is substantially present” means that the thickness of the dead layer is 20 nm or less. The thickness of the photocatalyst layer is preferably from 1 nm to 1,000 nm, more preferably from 1 nm to 500 nm.Type: GrantFiled: December 24, 2002Date of Patent: November 3, 2009Assignee: Nippon Sheet Glass Company, LimitedInventors: Toshiaki Anzaki, Yoshifumi Kijima, Kenji Mori
-
Patent number: 7612013Abstract: An object of the present invention is to provide a catalyst which, in the FT process, exhibits a high chain growth probability, and a high catalytic activity, can stably and smoothly promote the reaction, exhibits a high productivity of C5+, and can efficiently produce liquid hydrocarbons, and a process therefore. The invention relates to a hydrocarbon-producing catalyst obtainable by supporting a ruthenium compound on a support composed of a manganese oxide and an aluminum oxide, and which satisfies at least one of characteristics (1) and (2): (1) the catalyst being treated with an aqueous alkaline solution and subsequently subjected to calcination treatment in the air at 150 to 500° C., (2) the aluminum oxide being an aluminum oxide wherein pore volume formed by pores having a pore diameter of 8 nm or more accounts for 50% or more of total pore volume.Type: GrantFiled: February 23, 2005Date of Patent: November 3, 2009Assignees: Japan Oil, Gas and Metals National Corporation, Cosmo Oil Co., Ltd.Inventors: Kazuhito Sato, Shigenori Nakashizu, Osamu Iwamoto, Hiroaki Otsuka
-
Patent number: 7608562Abstract: A method of producing a photocatalyst according to the invention comprises forming an amorphous titanium oxide and heat-treating it in an atmosphere containing oxygen, whereby a photocatalyst having a good photocatalysis can be obtained. In particular, the amorphous titanium oxide is obtained by using the reactive sputtering method and via deposition at a low temperature and at a high film formation rate. This apparatus can be provided with cooling means to allow enhancement of the throughput of the film formation process.Type: GrantFiled: November 20, 2008Date of Patent: October 27, 2009Assignee: Shibaura Mechatronics CorporationInventors: Junji Hiraoka, Minoru Takashio, Tetsuya Fukushima, Daisuke Noguchi, Yoshio Kawamata
-
Patent number: 7608556Abstract: Carbon nanotubes have been reversibly and readily oxidized and reduced with common chemicals in solution, thereby allowing the nanotubes to be used as catalysts for chemical reactions and as stable charge storage devices.Type: GrantFiled: July 8, 2008Date of Patent: October 27, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Bruce A. Diner, Ming Zheng
-
Patent number: 7608234Abstract: Precipitated silicas useful, for example, as fillers in elastomer mixtures or vulcanizates have a particularly broad pore size distribution of the pores with a pore diameter smaller than that of the maximum of the derivative of the pore volume distribution function, and have simultaneously very low microporosity and high rubber activity.Type: GrantFiled: September 8, 2006Date of Patent: October 27, 2009Assignee: Degussa AGInventors: Oleg Stenzel, Hans-Detlef Luginsland, Stefan Uhrlandt, Andre Wehmeier
-
Patent number: 7605110Abstract: A ceramic body, a ceramic catalyst body, a ceramic catalyst body and related manufacturing methods are disclosed wherein a cordierite porous base material has a surface, formed with acicular particles made of a component different from that of cordierite porous base material, which has an increased specific surface area with high resistance to a sintering effect. The ceramic body is manufactured by preparing a slurry containing an acicular particle source material, preparing a porous base material, applying the slurry onto a surface of the porous base material and firing the porous base material, whose surface is coated with the slurry, to cause acicular particles to develop on the surface of the porous base material. A part of or a whole of surfaces of the acicular particles is coated with a constituent element different from that of the acicular particles.Type: GrantFiled: April 5, 2007Date of Patent: October 20, 2009Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Keiichi Yamada, Kazuhiko Koike, Katsumi Yoshida, Hideki Kita, Naoki Kondo, Hideki Hyuga
-
Patent number: 7598204Abstract: A reagent suitable for use as a catalyst comprises a first metal species substrate having a second reduced metal species coated thereon, the second reduced metal species being less electropositive than the first metal. Methods of manufacture are also provided.Type: GrantFiled: September 19, 2005Date of Patent: October 6, 2009Assignee: General Motors CorporationInventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui
-
Patent number: 7598194Abstract: It is aimed at providing an oxynitride powder, which is suitable for usage as a phosphor, is free from coloration due to contamination of impurities, and mainly includes a fine ?-sialon powder. An oxynitride powder is produced by applying a heat treatment in a reducing and nitriding atmosphere, to a precursor compound including at least constituent elements M, Si, Al, and O (where M is one element or mixed two or more elements selected from Li, Mg, Ca, Sr, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), thereby decreasing an oxygen content and increasing a nitrogen content of the precursor.Type: GrantFiled: April 22, 2005Date of Patent: October 6, 2009Assignee: National Institute for Materials ScienceInventors: Naoto Hirosaki, Takayuki Suehiro
-
Patent number: 7592290Abstract: The invention relates to supported catalysts and a process for the production of these catalysts. These supported catalysts may be used in various reactions such as reforming reactions (e.g. steam methane reforming (SMR) reactions and autothermal reforming (ATR) reactions). In one aspect of the invention, the supported catalyst comprises a transition metal oxide; optionally a rare-earth metal oxide; and a transition metal aluminate.Type: GrantFiled: April 7, 2005Date of Patent: September 22, 2009Assignee: Sulzer Metco(Canada) Inc.Inventors: Syed Tajammul Hussain, Eugene Stelmack
-
Patent number: 7589248Abstract: Mercury is removed from contaminated waste by firstly applying a sulfur reagent to the waste. Mercury in the waste is then permitted to migrate to the reagent and is stabilized in a mercury sulfide compound. The stable compound may then be removed from the waste which itself remains in situ following mercury removal therefrom.Type: GrantFiled: June 11, 2008Date of Patent: September 15, 2009Assignee: Brookhaven Science Associates, LLCInventors: Mark Fuhrmann, John Heiser, Paul Kalb
-
Patent number: 7589044Abstract: A method comprising contacting a donor support with a recipient support to generate a mixture, and heating the mixture to produce a polymerization catalyst, wherein a metal or a metal-containing compound migrates from the donor support to the recipient support. A method comprising contacting a donor support comprising inactive metal species with a recipient support, and mobilizing the inactive metal species from the donor support to form an active metal species on the recipient support.Type: GrantFiled: October 2, 2007Date of Patent: September 15, 2009Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, William B. Beaulieu