Patents Examined by Richard D. Lovering
  • Patent number: 6478986
    Abstract: The present invention refers to a process for preparing a coagulating/flocculating agent comprising the following steps: a) mixing an aldehyde, an ammonium salt, and a mineral acid catalyst in a reaction vat at a temperature below 45° C. in an aqueous medium; b) reacting said mixture by heating said mixture until a colorless liquid is obtained; c) reacting said obtained colorless liquid with an aqueous tannin solution by stirring and heating to obtain a viscous liquid; and d) optionally, atomizing said viscous liquid to obtain a uniformly grained powder.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: November 12, 2002
    Assignee: Tanac S.A.
    Inventors: Luiz Henrique Lamb, Otávio Guimarães Decusati
  • Patent number: 6479156
    Abstract: The invention relates to a nanocomposite for thermal insulation especially for fireproofing purposes, which can be obtained by combining (A) at least 35 wt. % of nanoscaled, optionally surface-modified particles of an inorganic compound; (B) 10-60 wt. % of a compound with at least two functional groups which can react and/or interact with the surface groups of nanoscaled particles (A), (C) 1-40 wt. % of water and/or an organic solvent which has no functional groups or only one which is defined in (B), wherein the above-mentioned percentages relate to the sum of components (A), (B) and (C), and (D)=0-10 wt. % (based on the nanocomposite) of additives.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 12, 2002
    Assignee: Institut für Neue Materialien gemeinnützige GmbH
    Inventors: Helmut Schmidt, Martin Mennig, Gerhard Jonschker
  • Patent number: 6476168
    Abstract: Disclosed is an emulsion useful in an inversion process. The emulsion is a water-in-oil emulsion and has an aqueous phase having a water-soluble polymer, an oil phase and an activating agent of the following formula: wherein n=0 to 10 and m=2 to 25 and the oxypropylene and oxyethylene units are of block distribution or intermixed in random or tapered distribution. Further disclosed is a process according to the following: a) providing an water-in-oil emulsion having a water-soluble polymer in the aqueous phase and the activating agent; b) introducing the emulsion into an aqueous medium and c) allowing sufficient time for the emulsion to invert. Further disclosed is another process according to the following: a) providing an water-in-oil emulsion having a water-soluble polymer in the aqueous phase; b) introducing the emulsion into an aqueous medium having the activating agent and c) allowing sufficient time for the emulsion to invert.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: November 5, 2002
    Assignee: Rhodia, Inc.
    Inventors: Manilal S. Dahanayake, Fang Li, Jean-Luc Joye
  • Patent number: 6476083
    Abstract: This invention provides an alumina dispersant mainly comprised of a nitrogen-containing monocarboxylic acid, an alumina dispersion liquid comprised of alumina particles dispersed well in an aqueous dispersing medium, a treating agent for use in making inkjet-printing materials, comprised of the alumina dispersion, and the inkjet-printing materials prepared by using the treating agent to have a high glossiness, high absorption, high water resistance, high reproducibility and good roundness of dots.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: November 5, 2002
    Assignee: Taiho Industries Co., Ltd.
    Inventors: Kousuke Okura, Tetsuya Ochiai, Kenji Kawada
  • Patent number: 6475561
    Abstract: The present invention refers to a method of producing organically modified aerogels on a basis of silicon tetrachloride in which: a) a hydrogel is obtained by direct reaction of silicon tetrachloride with water, b) the hydrogel obtained in step a) is surface-modified, and c) the surface-modified gel obtained in step b) is dried.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: November 5, 2002
    Assignee: Cabot Corporation
    Inventor: Fritz Schwertfeger
  • Patent number: 6468445
    Abstract: The present invention relates to solvents, and methods, for selectively extracting and recovering radionuclides, especially cesium and strontium, rare earths and actinides from liquid radioactive wastes. More specifically, the invention relates to extracting agent solvent compositions comprising complex organoboron compounds, substituted polyethylene glycols, and neutral organophosphorus compounds in a diluent. The preferred solvent comprises a chlorinated cobalt dicarbollide, diphenyl-dibutylmethylenecarbamoylphosphine oxide, PEG-400, and a diluent of phenylpolyfluoroalkyl sulfone. The invention also provides a method of using the invention extracting agents to recover cesium, strontium, rare earths and actinides from liquid radioactive waste.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 22, 2002
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Valeriy Nicholiavich Romanovskiy, Igor V. Smirnov, Vasiliy A. Babain, Terry A. Todd, Ken N. Brewer
  • Patent number: 6469096
    Abstract: A water-soluble or water-dispersible polyester B useful as emulsifier for aqueous emulsions of alkyd resins A, wherein the polyester B is obtainable by reacting, under polycondensation conditions, polyhydroxyl components Ba from the class of the sugar alcohols having more than 4 carbon atoms and at least five hydroxyl groups per molecule, alkoxypolyethylene glycols Bb having 1 to 4 carbon atoms in the alkyl radical and a number-average molar mass Mn of from 500 to 2000 g/mol, cycloaliphatic dicarboxylic acids Bc and unsaturated or saturated fatty acids Bd having 10 to 22 carbon atoms, a process for its preparation, and alkyd resin emulsions prepared therewith.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: October 22, 2002
    Assignee: Solutia Austria GmbH
    Inventors: Edmund Urbano, Michael Gobec, Oliver Ferk
  • Patent number: 6464995
    Abstract: Disclosed are horticultural substrates coated with a particulate membrane and a method for controlling pests and providing enhanced horticultural effect by applying a particulate membrane to the surface of the horticultural substrate.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: October 15, 2002
    Assignees: Engelhard Corporation, The United States of America as represented by the Secretary of Agriculture
    Inventors: Dennis G. Sekutowski, Gary J. Puterka, David Michael Glenn
  • Patent number: 6464886
    Abstract: Spherical particles having a size on the order of 0.1 to 100 microns in size are created by systems and devices of several types. The device includes a source of a stream of gas which is forced through a liquid held under pressure in a pressure chamber with an exit opening therein. The stream of gas surrounded by the liquid in the pressure chamber flows out of an exit orifice of the chamber into a liquid thereby creating a monodispersion of bubbles with substantially uniform diameter. The bubbles are small in size and produced with a relatively small amount of energy relative to comparable systems. Small particles of liquid may also be produced. Applications of the technology range from oxygenating sewage with monodispersions of bubbles to inhalation therapy with monodisperse aerosol dispersions of pharmaceutically active drugs.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: October 15, 2002
    Assignee: Universidad de Sevilla
    Inventor: Alfonso Gañan-Cálvo
  • Patent number: 6461535
    Abstract: The present invention provides a process for removing arsenic from ground water to be processed and used in remote dwellings. The process includes (a) contacting a clay, a coagulant, and an oxidizer with water containing arsenic to form a coagulated colloidal mixture; (b) adsorbing the arsenic onto the coagulated colloidal mixture; and (c) separating the water from the coagulated colloidal mixture. The invention also provides a composition ready for use in removing arsenic from ground water to be used in remote areas. The composition includes an activated clay, a coagulant, and an oxidizer in predetermined proportions for efficient removal of arsenic from ground water.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: October 8, 2002
    Assignee: Pan American Health Organization
    Inventor: María Luisa Castro de Esparza
  • Patent number: 6461545
    Abstract: Methods for preparing microspheres containing imidazole derivatives are provided. Also provided is the use of imidazole derivatives containing microspheres for treating fungal infections. Oral dosage forms for oral administration are also provided.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: October 8, 2002
    Assignee: Emisphere Technologies, Inc.
    Inventor: Martin L. Kantor
  • Patent number: 6462095
    Abstract: Polymer-stabilized metal colloid solutions, process for preparing them and their use as catalysts for fuel cells. Process for preparing metal colloid solutions by reacting a platinum compound and, if desired, one or more compounds of Rh, Ru, Ir or Pd with a reducing agent. At least one cation-exchange polymer is used for stabilizing the metal colloid solution.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: October 8, 2002
    Assignee: Axiva GmbH
    Inventors: Harald Bönsel, Gregor Deckers, Georg Frank, Hans Millauer, Thomas Soczka-Guth
  • Patent number: 6458855
    Abstract: Stable hydrocarbon in water emulsions are formed by emulsifying the hydrocarbon with a non-ionic surfactant and water obtained from the Fischer-Tropsch process.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: October 1, 2002
    Assignee: Exxon Research and Engineering Company
    Inventors: Robert J. Wittenbrink, Paul J. Berlowitz, Tapan Chakrabaty, Loren L. Ansell
  • Patent number: 6455594
    Abstract: A platinum colloid is formed by reducing platinum ions by agitating a treatment solution, while controlling temperature of the treatment solution under a reductive atmospheric condition. The solution contains one part of capacity of a platinum chloride acid solution, 400 to 500 parts of capacity of water, a non-ion based surface-active agent in an amount of 0.2 to 2 times with respect to an amount of the platinum chloride acid solution, a reducing agent in an amount of 40 to 60 times with respect to the amount of the platinum cloride acid solution, and a Ph compensating agent in an amount of 10 to 30 times with respect to the amount of the platinum chloride acid solution if the concentration thereof is 5%, to thereby adjust pH of the treatment solution to neutral or weak alkalinity.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: September 24, 2002
    Assignee: Yokohama Town Service Co., Ltd.
    Inventor: Hirofumi Tsuji
  • Patent number: 6451351
    Abstract: A method for preparing a gel composition, such as alginate gel beads, using a proper concentration of calcium pantothenate or calcium ascorbate as a gelling agent.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: September 17, 2002
    Assignees: Meiji Milk Products Co., Ltd.
    Inventors: Susumu Kawashima, Yoshifumi Murata
  • Patent number: 6448371
    Abstract: A novel process for the purification of poloxamers which contain aldehyde impurities, and particularly for the purification of the poloxamers named poloxamer 188 and poloxamer 407, which process includes dissolving the poloxamer(s) in a solvent which solvent may optionally contain an acid or a mixture of acids; if the solvent in which the poloxamer(s) has been dissolved is free from acid, acid is added; whereafter the aldehydes are removed.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 10, 2002
    Assignee: Maillefer Instruments Trading S.a.r.l.
    Inventors: Mats Berg, Alf Djurle, Magnus Melin, Peter Nyman
  • Patent number: 6448369
    Abstract: This invention provides a method for preparing, in high purity and high yield, heterobifunctional derivatives of poly(ethylene glycol) or related polymers. A chromatographic purification step is not necessary in the method. In accordance with the method of the invention, an intermediate polymer having a formula of W-Poly-OH is provided bearing a removable group W at one terminus. The intermediate polymer W-Poly-OH is first altered by modifying the OH group to a first functional group X, followed by the removal of W to generate a second hydroxyl group. The latter hydroxyl group may then be further converted to a second functional group Y, thus providing the desired heterobifunctional derivative.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: September 10, 2002
    Assignee: Shearwater Corporation
    Inventors: Michael David Bentley, J. Milton Harris, Antoni Kozlowski
  • Patent number: 6448298
    Abstract: Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: September 10, 2002
    Assignee: BetzDearborn, Inc.
    Inventors: Raimundo Romualdo, Claudio Cândido Luiz, Luiz Antonio Fernandes
  • Patent number: 6448297
    Abstract: The invention relates to alkyl phosphates, in particular their mixtures, of the formula in which R is C12-C22-alkyl, preferably C14-C18-alkyl, X is a group of the formulae NH3R1, NH2R2R3 or NHR4R5R6, Y is as defined for R or is as defined for X, and R1 is C8-C22-alkyl, R2 and R3 are C1-C22-alkyl or cyclohexyl, and R4, R5 and R6 are C1-C4-alkyl. These compounds, in particular the mixtures of mono- and diesters, are suitable as emulsifiers in the preparation of aqueous emulsions.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: September 10, 2002
    Assignee: Clariant GmbH
    Inventors: Angelika Turowski-Wanke, Matthias Löffler
  • Patent number: 6444785
    Abstract: A process is provided for preparing W/O emulsions having crosslinked water-swollen polymers dispersed therein, by aftertreatment with a redox initiator system to reduce the residual monomer content.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Gotsche, Claudia Wood, Kristin Tiefensee