Patents Examined by Stanley S. Silverman
  • Method for preparing a gel containing nanometer titanium dioxide powders for visible light photocatalysis
    Patent number: 7090823
    Abstract: A method for preparing a gel containing nanometer titanium dioxide particles for visible light photocatalysis, the method has the following acts of: obtaining titanium hydroxide; inverting titanium hydroxide into titanium dioxide by adding an oxidant, an improving agent, an optional acid, and an optional surfactant to compose a solution; and aging the solution by heating to make the solution become a gel. The gel made by the present invention has photocatalystic characteristic and self-cleaning efficiency particularly in visible light but not in ultraviolet light as conventional gel.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: August 15, 2006
    Assignee: ONID Technology Corp.
    Inventor: Wen-Chuan Liu
  • System and method for chemical decontamination of radioactive material
    Patent number: 7087120
    Abstract: A method for chemically decontaminating radioactive material. The method includes reducing-dissolving step for setting surface of radioactive material in contact with reducing decontamination liquid including mono-carboxylic acid and di-carboxylic acid as dissolvent; and oxidizing-dissolving step for setting the surface of the radioactive material in contact with oxidizing decontamination liquid including oxidizer. The method may include repeated pairs of steps, each pair including the reducing-dissolving step and the oxidizing-dissolving step. The mono-carboxylic acid may include formic acid, and the di-carboxylic acid includes oxalic acid. The oxidizer may be ozone, permanganic acid or permanganate.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: August 8, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masami Enda, Yumi Yaita, Mitsuyoshi Sato, Hitoshi Sakai, Takeshi Kanasaki, Ichiro Inami
  • Process for the preparation of vanadyl sulfate solution
    Patent number: 7083774
    Abstract: A process for producing a vanadyl sulphate solution (VOSO4) comprises forming a suspension of vanadium trioxide (V2O3) in a sulphuric acid solution and contacting the V2O3 suspension with a strong oxidising agent under controlled conditions to produce the VOSO4 solution. A preferred oxidising agent is hydrogen peroxide, which is added very slowly to the V2O3 suspension due to the violent nature of the reaction.
    Type: Grant
    Filed: May 26, 2003
    Date of Patent: August 1, 2006
    Assignee: Highveld Steel and Vanadium Corporation Limited
    Inventors: Andries Gerhardus Dormehl, Patrick Albert Monaghan
  • Process of making hydrophobic metal oxide nanoparticles
    Patent number: 7081234
    Abstract: A process of treating metal oxide nanoparticles that includes mixing metal oxide nanoparticles, a solvent, and a surface treatment agent that is preferably a silane or siloxane is described. The treated metal oxide nanoparticles are rendered hydrophobic by the surface treatment agent being surface attached thereto, and are preferably dispersed in a hydrophobic aromatic polymer binder of a charge transport layer of a photoreceptor, whereby ?—? interactions can be formed between the organic moieties on the surface of the nanoparticles and the aromatic components of the binder polymer to achieve a stable dispersion of the nanoparticles in the polymer that is substantially free of large sized agglomerations.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: July 25, 2006
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John F. Graham
  • Cathode materials for primary batteries
    Patent number: 7081235
    Abstract: The cathode of a primary alkaline battery is composed of electrode grade manganese dioxide containing Zr.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: July 25, 2006
    Assignee: Eveready Battery Company, Inc.
    Inventors: Frank H. Feddrix, Robert M. Estanek, Scott W. Donne
  • Method and apparatus for degassing liquid sulfur
    Patent number: 7081233
    Abstract: A vessel is mounted external to a liquid sulfur storage pit for degassing liquid sulfur at atmospheric pressure. Liquid sulfur is re-circulated from the pit to a static mixing device extending from a head space to the liquid sulfur which provides intimate contact of the liquid sulfur as it flows downwardly and sweep air flowing through the head space above the pit. Further, the static mixing device prevents free fall of liquid sulfur and the hazards of static electricity associated therewith. Use of a heat traced gas outlet induces flow of sweep gas from the system, obviating the need for a steam eductor or blower.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: July 25, 2006
    Assignee: Dynamax Engineering Ltd.
    Inventor: James G. (Jim) Louie
  • Carbon material for producing metal-including fullerene in high yield
    Patent number: 7078006
    Abstract: A carbon material for producing endohedral metallofullerenes in a high yield is made of a mixture of a metal or metal compound with a carbonaceous material and is used in producing a endohedral metallofullerenes, wherein said carbon material contains a metal carbide and a bulk density of said carbon material is set to 1.80 g/cm3 or less.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: July 18, 2006
    Assignee: Toyo Tanso Co., Ltd.
    Inventors: Hiroshi Okubo, Toshiaki Sogabe, Tetsuro Tojo, Kyoko Noro, Hisanori Shinohara
  • Lepidocrocite type lithium potassium titanate, method for preparation thereof, and friction material
    Patent number: 7078009
    Abstract: Lepidocrocite lithium potassium titanate characterized as having a composition represented by the formula K0.5-0.7Li0.27Ti1.73O3.85-3.95, and preferably having an arithmetic mean of major and minor diameters of 0.1–100 ?m, a proportion of a major to minor diameter of from 1 to below 10, a mean thickness of 50–5,000 nm and a flaky shape. A friction material characterized as containing 1–80% by weight of the lepidocrocite lithium potassium titanate as a friction control agent.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 18, 2006
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Hiroshi Ogawa, Nobuki Itoi, Kousuke Inada
  • Method of producing a high pressure gas
    Patent number: 7078012
    Abstract: A method of producing a high pressure gas is disclosed and which includes providing a container; supplying the container with a liquid such as water; increasing the pressure of the liquid within the container; supplying a reactant composition such as a chemical hydride to the liquid under pressure in the container and which chemically reacts with the liquid to produce a resulting high pressure gas such as hydrogen at a pressure of greater than about 100 pounds per square inch of pressure; and drawing the resulting high pressure gas from the container.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: July 18, 2006
    Assignee: Eattelle Energy Alliance, LLC
    Inventors: Dennis N. Bingham, Kerry M. Klingler, William T. Zollinger
  • Method of desulfurizing a hydrocarbon gas by selective partial oxidation and adsorption
    Patent number: 7074375
    Abstract: A hydrocarbon gas such as methane and LPG is desulfurized in the presence of oxygen and an oxidation catalyst to convert sulfur compounds in the gas to sulfur oxides. The sulfur oxides are then trapped downstream of the oxidation by an adsorbent. The amount of oxygen added to the hydrocarbon gas to promote oxidation is such that the sulfur compounds are selectively oxidized and the oxidation of the hydrocarbon gas is minimized to reduce hydrogen formation.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: July 11, 2006
    Assignee: Engelhard Corporation
    Inventors: Jordan K. Lampert, Lawrence Shore, Robert J. Farrauto, Shinn Hwang
  • Process for producing ammonium polythiomolybdate
    Patent number: 7074381
    Abstract: A process for preparation of an ammonium polythiomolybdate or a hydrate thereof of the formula (NH4)2Mo3S13.n H2O where n is 0, 1 or 2, in which aqueous ammonium monosulfide, elemental sulfur and molybdic oxide are reacted in a sealed reactor, with hydrogen sulfide gas being fed into the reactor until the hydrogen sulfide is no longer absorbed by the reaction mixture to form a reaction product and then heating the reaction product in a sealed reactor, the concentration of ammonium monosulfide in the reaction mixture being controlled throughout the reaction such that reactor pressure does not exceed 700 kPa (100 psig).
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: July 11, 2006
    Assignee: Infineum International Limited
    Inventors: Gregory C. Giffin, Ronald P. Wangner, Grant O. Hutchings, John Spanton
  • Process for producing zinc sulfide particles
    Patent number: 7070756
    Abstract: A mixed melt, which contains urea and/or a urea derivative and contains a sulfur source and a zinc source, is prepared. A temperature of the mixed melt is raised, and a precipitate of zinc sulfide is thereby formed. The temperature of the mixed melt is raised even further, and a solid material containing the zinc sulfide is thereby formed. The solid material is fired, and organic constituents contained in the solid material are thus removed. Zinc sulfide particles having uniform particle size and free from inclusion of impurities are thus produced without any precipitant being added.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: July 4, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Milan Hubacek, Kenji Takahashi
  • Attrition resistant, zinc titanate-containing, reduced sulfur sorbents and methods of use thereof
    Patent number: 7067093
    Abstract: Reduced sulfur gas species (e.g., H2S, COS and CS2) are removed from a gas stream by compositions wherein a zinc titanate ingredient is associated with a metal oxide-aluminate phase material in the same particle species. Nonlimiting examples of metal oxides comprising the compositions include magnesium oxide, zinc oxide, calcium oxide, nickel oxide, etc.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: June 27, 2006
    Assignees: Research Triangle Institute, Intercat, Inc.
    Inventors: Albert A. Vierheilig, Raghubir P. Gupta, Brian S. Turk
  • Water wall boiler for air and oxygen fired Claus sulfur recovery units
    Patent number: 7067101
    Abstract: The thermal combustion step of the modified Claus process is carried out in a water-wall boiler instead of a refractory-lined reaction furnace. The water-wall boiler replaces the conventional refractory-lined furnace and waste heat boiler when air, oxygen, or oxygen-enriched air is used as the oxidant. The acid gas combustion may be hydrogen sulfide-rich or hydrogen sulfide-lean with or without contaminants such as hydrocarbons and ammonia. Thermal combustion is performed in a single stage, without a recycle, for all levels of oxygen enrichment.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: June 27, 2006
    Assignee: WorleyParsons Group Inc.
    Inventor: Mahin Rameshni
  • Method and apparatus for producing ozone
    Patent number: 7067102
    Abstract: A method of producing ozone comprises the steps of generating intermittent bursts of corona discharge in an electrode region 20.2, and passing oxygen-containing fluid through the region, thereby to cause ionization of the oxygen. The electrode is energized by a train of voltage pulses. Each pulse has a rise time of better than 2 kV/100 ns.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: June 27, 2006
    Assignee: Potchefstroom University for Christian Higher Education
    Inventor: Barend Visser
  • Method for preparing aluminum sulfate, aluminum sulfate, method for improving yield of aluminum sulfate, and use of nitric acid
    Patent number: 7067099
    Abstract: A method for preparing aluminum sulfate which comprises subjecting sulfuric acid and aluminum hydroxide to reaction, wherein the reaction is advanced in the presence of at least one member selected from the group consisting of nitric acid and a peroxide. An industrial composition comprising aluminum sulfate. By the method of the present invention, aluminum sulfate can be efficiently and commercially advantageously prepared. Further, the industrial composition of the present invention can be advantageously used in various industrial fields as, for example, a waste water treatment agent, a paper sizing agent, a tanning agent for hides, a clarifying agent for fats and oils, or a catalyst for industrial use.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: June 27, 2006
    Assignee: Sony Corporation
    Inventor: Yasuhito Inagaki
  • Process for the brightening of sodium hydrogensulfate
    Patent number: 7067094
    Abstract: The process for the brightening of continuously produced sodium hydrogensulfate obtained in the reaction of sodium chloride and concentrated sulfuric acid in molten sodium hydrogensulfate in a circulation reactor, wherein evolved hydrogen chloride and heating gases generated by an immersion burner are withdrawn at various sites and seed crystals are added for a faster conversion of initially formed metastable phases, is that from 0.01 to 0.05% by weight of aluminium oxide and/or from 0.5 to 1.5% by weight of magnesium oxide and/or magnesium sulfate and, optionally, additionally calcium sulfate are added as seed crystals.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: June 27, 2006
    Assignee: Grillo-Werke AG
    Inventors: Klaus Driemel, Ingo Biertümpel, Horst Kirsch
  • Aluminum hydroxide, made via the bayer process, with low organic carbon
    Patent number: 7067106
    Abstract: A composition of matter which is aluminum hydroxide, produced using the Bayer Process, wherein the aluminum hydroxide produced has a Total Organic Carbon of less than about 0.5 milligrams Total Organic Carbon/gram aluminum hydroxide.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: June 27, 2006
    Assignee: Nalco Company
    Inventor: John T. Malito
  • Liquid ferric sulfate manufacturing process
    Patent number: 7067100
    Abstract: A process for the production of liquid ferric sulfate from finely-divided ferric oxide, sulfuric acid and water in a closed reaction vessel at temperatures ranging from about 130.degree. C. to about 150.degree. C. and pressures from about 30 psi to about 70 psi. The reaction time ranges from Four to eight hours and produces liquid ferric sulfate having at least 10% trivalent iron. Yield and efficiency are provided by controlling the specific gravity prior to the reaction and by counter current cycling the waste stream from the reaction through the dilution water and use of a polymeric settling agent to remove unreacted iron content from the digester output.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: June 27, 2006
    Assignee: General Chemical Corporation
    Inventors: Steven Faigen, Joseph Hurd, Larry Knuth
  • Furnace and steam reforming process
    Patent number: 7067107
    Abstract: A steam reforming furnace has a plurality of substantially vertical reformer tubes. Each reformer tube has a feed inlet at its lower end, an outlet at its upper end, and a catalyst containment zone disposed intermediate its upper and lower ends and contains a charge of a particulate steam reforming catalyst which is insufficient to fill completely the catalyst containment zone. An upper retainer means is mounted at the upper end of the catalyst containment zone and is permeable to gas or vapor but retains particles of the catalyst in the catalyst containment zone. A follower means is movably mounted in the catalyst containment zone beneath the charge catalyst for movement upwardly from a lower end of the containment zone upon upward flow of gas through the catalyst containment zone at a rate beyond a threshold rate.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: June 27, 2006
    Assignee: Davy Process Technology Limited
    Inventors: Peter Hinton, Roger K. Bence, Michael Hilton, Mark A. Linthwaite