Patents Examined by Serena L Hanor
  • Patent number: 7722849
    Abstract: 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: Grant
    Filed: December 16, 2003
    Date of Patent: May 25, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Martin Moerters, Helmut Mangold, Monika Oswald, Kai Schumacher, Heinz Lach, Gerrit Schneider
  • Patent number: 7692058
    Abstract: 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: Grant
    Filed: December 27, 2004
    Date of Patent: April 6, 2010
    Assignee: Brookhaven Science Associates, LLC
    Inventors: Mark Fuhrmann, John Heiser, Paul Kalb
  • Patent number: 7662359
    Abstract: 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: Grant
    Filed: February 4, 2005
    Date of Patent: February 16, 2010
    Assignee: Sachtleben Pigments Oy
    Inventors: Saila Mariatta Karvinen, Ralf-Johan Lamminmäki
  • Patent number: 7662356
    Abstract: 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: Grant
    Filed: February 9, 2006
    Date of Patent: February 16, 2010
    Assignee: Nippon Steel Materials Co., Ltd.
    Inventors: Shinji Tokumaru, Kensuke Okazawa, Jirou Kondou, Masaki Okajima
  • Patent number: 7632778
    Abstract: 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: Grant
    Filed: January 17, 2005
    Date of Patent: December 15, 2009
    Assignee: Süd-Chemie AG
    Inventors: Klaus Wanninger, Peter Britz, Nicolas Zartenar
  • Patent number: 7628971
    Abstract: 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: Grant
    Filed: July 28, 2008
    Date of Patent: December 8, 2009
    Assignee: Degussa AG
    Inventors: Oleg Stenzel, Stefan Uhrlandt, Hans-Detlef Luginsland, Andre Wehmeier
  • Patent number: 7625836
    Abstract: 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: Grant
    Filed: December 13, 2005
    Date of Patent: December 1, 2009
    Assignees: 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: 7625840
    Abstract: 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: Grant
    Filed: September 14, 2004
    Date of Patent: December 1, 2009
    Assignee: UChicago Argonne, LLC.
    Inventors: Michael J. Pellin, John N. Hryn, Jeffrey W. Elam
  • Patent number: 7622189
    Abstract: 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: Grant
    Filed: June 21, 2006
    Date of Patent: November 24, 2009
    Assignee: Babcock & Wilcox Technical Services Y-12, LLC
    Inventors: Edward B. Ripley, Roland D. Seals, Jonathan S. Morrell
  • Patent number: 7612015
    Abstract: 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: Grant
    Filed: December 24, 2002
    Date of Patent: November 3, 2009
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Toshiaki Anzaki, Yoshifumi Kijima, Kenji Mori
  • Patent number: 7612013
    Abstract: 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: Grant
    Filed: February 23, 2005
    Date of Patent: November 3, 2009
    Assignees: Japan Oil, Gas and Metals National Corporation, Cosmo Oil Co., Ltd.
    Inventors: Kazuhito Sato, Shigenori Nakashizu, Osamu Iwamoto, Hiroaki Otsuka
  • Patent number: 7608562
    Abstract: 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: Grant
    Filed: November 20, 2008
    Date of Patent: October 27, 2009
    Assignee: Shibaura Mechatronics Corporation
    Inventors: Junji Hiraoka, Minoru Takashio, Tetsuya Fukushima, Daisuke Noguchi, Yoshio Kawamata
  • Patent number: 7608556
    Abstract: 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: Grant
    Filed: July 8, 2008
    Date of Patent: October 27, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Bruce A. Diner, Ming Zheng
  • Patent number: 7608234
    Abstract: 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: Grant
    Filed: September 8, 2006
    Date of Patent: October 27, 2009
    Assignee: Degussa AG
    Inventors: Oleg Stenzel, Hans-Detlef Luginsland, Stefan Uhrlandt, Andre Wehmeier
  • Patent number: 7605110
    Abstract: 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: Grant
    Filed: April 5, 2007
    Date of Patent: October 20, 2009
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Keiichi Yamada, Kazuhiko Koike, Katsumi Yoshida, Hideki Kita, Naoki Kondo, Hideki Hyuga
  • Patent number: 7598204
    Abstract: 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: Grant
    Filed: September 19, 2005
    Date of Patent: October 6, 2009
    Assignee: General Motors Corporation
    Inventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui
  • Patent number: 7598194
    Abstract: 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: Grant
    Filed: April 22, 2005
    Date of Patent: October 6, 2009
    Assignee: National Institute for Materials Science
    Inventors: Naoto Hirosaki, Takayuki Suehiro
  • Patent number: 7592290
    Abstract: 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: Grant
    Filed: April 7, 2005
    Date of Patent: September 22, 2009
    Assignee: Sulzer Metco(Canada) Inc.
    Inventors: Syed Tajammul Hussain, Eugene Stelmack
  • Patent number: 7589248
    Abstract: 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: Grant
    Filed: June 11, 2008
    Date of Patent: September 15, 2009
    Assignee: Brookhaven Science Associates, LLC
    Inventors: Mark Fuhrmann, John Heiser, Paul Kalb
  • Patent number: 7589044
    Abstract: 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: Grant
    Filed: October 2, 2007
    Date of Patent: September 15, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, William B. Beaulieu