Patents Examined by Ngoc-Yen M. Nguyen
  • Patent number: 10065864
    Abstract: Provided is a method of preparing trichlorosilane, more particularly, a method of preparing trichlorosilane which trichlorosilane can be obtained with an improved yield using a catalyst-supported silicon.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: September 4, 2018
    Inventors: Gil Ho Kim, Joon Hwan Kim, Kyu Hak Park, Dong Ho Lee
  • Patent number: 8062990
    Abstract: A pliable refractory metal carrier (46) may have coated thereon an anchor layer (47) to improve adherence to the carrier (46) of a catalytic coating (48). The conformable catalyst member (26, 82, 82?, 126, 226, 326) may be bent to conform to a curved or bent exhaust pipe (20, 220, 320) within which it is mounted. The pliable metal carrier may be in the form of a tube such as carrier (46) having perforations (54) formed therein, or it may be a metal strip (76) which is folded into accordion pleats (80) and has perforations (78) formed therein. The perforations (54, 78) serve to permit the passage of exhaust gas therethrough. A series of interior closures (58) and annular baffles (60) may be provided to import a serpentine flow path to gases flowed through an exhaust pipe (22) containing a conformable catalyst member (226) therein. A mounting member (68) may be supplied to fasten one end of the conformable catalyst member (226) to the discharge end of an exhaust pipe (220).
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: November 22, 2011
    Assignee: BASF Corporation
    Inventors: Michael P. Galligan, Joseph C. Dettling, Shau-Lin F. Chen, Matthew P. Larkin
  • Patent number: 7988946
    Abstract: The method allows ZrF4 to be converted into ZrO2, by carrying out a thermal conversion operation based on solid ZrF4 and water which are heated in a reactor until converted into ZrO2. The initial ratio by weight of ZrF4 to water is in particular between 1/5 and 1/500, and this ratio is maintained substantially for the entire duration of the conversion. The thermal conversion is carried out at a temperature greater than or equal to 300° C. The invention is used in particular for recycling pickling baths for zirconium alloys.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: August 2, 2011
    Assignee: Compagnie Europeenne du Zirconium-Cezus
    Inventors: Léonard Chittaro, David Lasalmonie
  • Patent number: 7976817
    Abstract: To provide, in an industrial scale production of iodine heptafluoride, a method for producing it easily and continuously, with a single reactor, efficiently and stably by putting iodine and fluorine directly into the reactor. To provide a method for producing iodine heptafluoride, characterized in that each of a fluorine-containing gas and an iodine-containing gas is supplied to a reactor, in which iodine heptafluoride is previously present, in order to suppress a local reaction when iodine and fluorine as the raw materials are put into the reactor, and the reaction is conducted while circulating and mixing the gas in the reactor.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: July 12, 2011
    Assignee: Central Glass Company, Limited
    Inventors: Takaaki Shibayama, Atsushi Ryokawa, Shuhei Yamada
  • Patent number: 7976807
    Abstract: Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and by supplying oxygen-containing gas that also contains a small amount of moisture to the reaction region maintained at a temperature at which hexachlorodisilane decomposes.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: July 12, 2011
    Assignees: Kanken Techno Co., Ltd., Toagosei Co., Ltd.
    Inventors: Hiroshi Imamura, Hiroaki Takeuchi, Koji Ishikawa, Hiroshi Suzuki, Akira Moriya, Katsuyoshi Harada
  • Patent number: 7976808
    Abstract: To provide an agent for removing a halogen series gas and a method for removing a halogen series gas which is excellent in a removing ability of removing the present halogen series gas in a low concentration area, which prevents an adsorbent from generating heat, and which is capable of reducing formation of a solid waste. A method for removing a halogen series gas, which comprises bringing a gas to be treated which contains at least one member selected from the halogen series gas group consisting of F2, Cl2, Br2, I2, and compounds which generate a hydrogen halide or hypohalogeneous acid upon hydrolysis, into contact with a granule comprising, based on the total mass of the granule, from 45 to 99.85 mass % of an alkali metal salt, from 0.1 to 40 mass % of a carbonaceous material, and from more than 0 mass % to 15 mass % of an alkaline earth metal salt, in the presence of water.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: July 12, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Shigeru Sakurai, Hisakazu Arima
  • Patent number: 7968066
    Abstract: This invention relates to a method for producing chromates, especially for producing alkali metal chromates. The method comprises following steps: the obtaining of a mixture of alkali metal hydroxide, alkali metal chromate, and ferrous residue after the reaction of chromite ore with an oxidant in the reactor in the presence of molten salt or in aqueous solution of alkali metal hydroxide, the obtaining of a leaching slurry by leaching the reaction products with aqueous solution of alkali metal hydroxide, the separating of the primary chromate product from the leaching slurry, the obtaining of pure chromate crystal by purifying the primary chromate product. Both the primary chromate product and the pure chromate crystal can be used as the raw materials to manufacture other chromium compounds. Compared with the currently-used roasting method, the method has the advantages of decreasing the reaction temperature by about 700° C.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: June 28, 2011
    Assignee: Institute of Process Engineering Chinese Academy of Sciences
    Inventors: Zuohu Li, Yi Zhang, Shili Zheng, Tao Qi, Huiquan Li, Hongbin Xu, Zhikuan Wang
  • Patent number: 7955578
    Abstract: To provide a method and apparatus for treating a waste gas containing fluorine-containing compounds, according to which PFCs can be decomposed efficiently even at low temperature, and moreover fluorine from the product of the decomposition can be recovered for reuse efficiently. An embodiment of the present invention relates to a method of treating a gas containing a fluorine-containing compound, comprising contacting the gas with a treatment agent comprising a mixture of aluminum hydroxide and calcium hydroxide.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: June 7, 2011
    Assignee: Ebara Corporation
    Inventors: Yoichi Mori, Tadakazu Nishikawa, Masaaki Osato, Saburou Nagano, Yoshihiro Tanabe
  • Patent number: 7939042
    Abstract: The invention provides stabilized concentrated aqueous solutions of alkali hypobromites, as well as a process for the preparation of said stabilized concentrated solutions at low temperatures, comprising reacting a concentrated alkali hydroxide aqueous solution with bromine, adding to the non-stabilized reaction product an aqueous solution of a sulfamic compound to stabilize the hypobromite, and oxidizing bromide to produce additional hypobromite.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: May 10, 2011
    Assignee: Bromine Compounds Ltd.
    Inventors: Theodor Morel Fishler, David Feldman
  • Patent number: 7906097
    Abstract: There is provided a process for preparing aluminium chloride comprising leaching aluminium dross residues with H2SO4 so as to obtain a leachate; and hydrochlorinating the leachate so as to obtain aluminium chloride. If desired, aluminium chloride can then be converted into alumina.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: March 15, 2011
    Assignee: Groupe Conseil Procd Inc.
    Inventors: Martin Beaulieu, Stéphane Chabot, Yves Charest, Jean-François Savard
  • Patent number: 7871588
    Abstract: Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 18, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Robert Kuhlmann, Claus-Peter Drexel
  • Patent number: 7870724
    Abstract: The present invention provides a thermally stable catalyst for treating automobile exhaust by-products is provided. The catalyst of the invention comprises a first section that includes a precious metal present in a first concentration and a second section that includes a precious metal present in a second concentration. The catalyst of the invention is characterized by a unique precious metal concentration profile in which the first concentration of the precious metal is lower than the second concentration of the precious metal. When placed with an automobile exhaust system, the second section is positioned downstream of the first section. The present invention also provides a lean NOx trap utilizing the unique precious metal concentration profile. The NOx trap is found to possess improved NOx conversion performance relative to a NOx trap with the same total amount of precious metal deposited uniformly over the volume of the trap.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: January 18, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Justin Ura, Joseph Theis, Christian Goralski, Jr.
  • Patent number: 7858064
    Abstract: The invention relates to a titanium aquo-oxo chloride and to a method for its preparation. The compound is in the form of crystals and has the following composition by weight: 26.91% Ti; 21.36% Cl; and 4.41% H, which corresponds to the formula [Ti8O12(H2O)24]Cl8.HCl.7H2O. The method of preparation consists in hydrolyzing TiOCl2 either in an atmosphere whose moisture content is maintained between 50 and 60%, or by an alkali metal carbonate A2CO3, in order to obtain a titanium aquo-oxo chloride. The compound is useful as a semiconductor element of a photovoltaic cell or as a photocatalyst in air or water purification treatments.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: December 28, 2010
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Luc Brohan, Hari Sutrisno, Eric Puzenat, Annabelle Rouet, Hélène Terrisse
  • Patent number: 7842271
    Abstract: Carbon nanostructures are mass produced from graphite. In particularly preferred aspects, graphene is thermo-chemically derived from graphite and used in numerous compositions. In further preferred aspects, the graphene is re-shaped to form other nanostructures, including nanofractals, optionally branched open-ended SWNT, nanoloops, and nanoonions.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: November 30, 2010
    Inventor: Viktor I. Petrik
  • Patent number: 7837966
    Abstract: Ozone and, if necessary, water is added to an exhaust gas, such as air, containing hydrogen- and carbon-containing molecules of a pollutant. The exhaust gas is then continually flowed into one or more oxidizing reaction chamber modules. In the reaction chamber(s) the ozone- and water-containing gas is subjected to intense ultraviolet radiation (wavelength of 254 nm) to promote the formation of hydroxyl radicals to oxidize the pollutant molecules to carbon dioxide and water. The continually discharged gas is analyzed for residual ozone and hydrocarbon content and the analytical data used in feedback control of ozone addition and UV radiation intensity.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: November 23, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Kenneth B. Gross, Daniel Dziedzic, John T. Johnson
  • Patent number: 7824574
    Abstract: Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having one of the following formulas: (a) CexByB?zB?O?, wherein B=Ba, Sr, Ca, or Zr; B?=Mn, Co, or Fe; B?=Cu; 0.01<x<0.99; 0<y<0.6; 0<z<0.5; and 1<?<2.2; (b) SrvLawBxB?yB?zO?, wherein B=Co or Fe; B?=Al or Ga; B?=Cu; 0.01<v<1.4; 0.1<w<1.6; 0.1<x<1.9; 0.1<y<0.9; 0<z<2.2; and 3<?<5.5).
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: November 2, 2010
    Assignee: Eltron Research & Development
    Inventors: James H. White, Erick J. Schutte, Sara L. Rolfe
  • Patent number: 7824556
    Abstract: Chlorous acid is generated from a chlorite salt precursor, a chlorate salt precursor, or a combination of both by ion exchange. The ion exchange material facilitates the generation of chlorous acid by simultaneously removing unwanted cations from solution and adding hydrogen ion to solution. Chlorine dioxide is generated in a controlled manner from chlorous acid by catalysis. Chlorine dioxide can be generated either subsequent to the generation of chlorous acid or simultaneously with the generation of chlorous acid. For catalysis of chlorous acid to chlorine dioxide, the chlorous acid may be generated by ion exchange or in a conventional manner. Ion exchange materials are also used to purify the chlorous acid and chlorine dioxide solutions, without causing degradation of said solutions, to exchange undesirable ions in the chlorous acid and chlorine dioxide solutions with desirable ions, such as stabilizing ions, and to adjust the pH of chlorous acid and chlorine dioxide solutions.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: November 2, 2010
    Inventors: Allison H. Sampson, Richard L. Sampson
  • Patent number: 7790130
    Abstract: Wide mesoporous alumina composites are produced by an “in situ reaction” route comprising agglomeration of an alumina powder that is capable of rehydration together with a second reactive powder such as carbonate. In one method of production, the powders are fed to a rotating forming device that is continuously sprayed with liquid under conditions to form particulates. The discharging beads are then subjected to curing and thermal activation to produce the final catalyst or adsorbent. The alumina participates in a pore altering process involving the carbonate component upon formation of hydroxycarbonate intermediates such as Dawsonite. Large fraction of the pore volume of the final product consists of wide mesopores in the 15-50 nanometers range. The alumina composites exhibit a characteristic trimodal pore structure that includes also small micro-meso pores and macropores larger than 200 nanometers.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 7, 2010
    Assignee: UOP LLC
    Inventor: Vladislav I. Kanazirev
  • Patent number: 7754175
    Abstract: A process for preparing trichlorosilane by reacting silicon with hydrogen chloride, or silicon tetrachloride with hydrogen in the presence of silicon, and catalysts where the silicon and catalysts are laminated together and reduced in particle size prior to reaction.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 13, 2010
    Assignee: Dynamic Engineering, Inc.
    Inventors: Jon M. Bill, Jr., Carl W. Merkh
  • Patent number: 7744836
    Abstract: This gas purifying process removes trace constituents from a mixed gas that includes a rare gas and nitrogen as main components, and at least one from among hydrogen, nitrogen and hydrogen reaction products, and water vapor as the trace constituent. This process sequentially carries out an adsorbing step for removing water vapor and nitrogen and hydrogen reaction products; a hydrogen oxidation step for converting the hydrogen into water vapor by means of a hydrogen oxidation catalytic reaction in the presence of oxygen; and a drying step for removing water vapor generated in the hydrogen oxidation step. When nitrogen oxides are included as a trace constituent, then a denitration step is carried out prior to the adsorbing step, to convert nitrogen oxides into nitrogen and water vapor by means of a catalytic denitration reaction in the presence of a reducing substance.
    Type: Grant
    Filed: May 26, 2003
    Date of Patent: June 29, 2010
    Assignees: Taiyo Nippon Sanso Corporation
    Inventors: Tadahiro Ohmi, Ryuichi Yazaki, Masato Kawai, Tetsuya Kimijima, Kunio Matsuda