Patents Examined by Daniel S. Metzmaier
  • Patent number: 10329156
    Abstract: The present describes an oxygen functionalized nanoflake (O-GNF), a stable nanofluid in which the graphene nanoflakes remain dispersed or in suspension free of surfactants, and the method of making the oxygen-functionalized nanoflake. The oxygen-functionalized graphene nanoflake (O-GNF and/or O—N-GNF) comprises a single-crystal graphene nanoflake of 5-20 atomic planes comprising a surface oxygen-functionalization, wherein the O-GNF comprise a degree of oxygen functionalization from about 6 to about 25 at. % oxygen by weight of the GNF with a preferred oxygen functionalization of about 14 at. % oxygen.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: June 25, 2019
    Inventors: Jean-Luc Meunier, Dimitrios Berk, Ulrich Legrand, Norma-Yadira Mendoza Gonzalez, Pierre-Alexandre Pascone
  • Patent number: 10293279
    Abstract: The invention provides a foam control formulation in the form of a microemulsion, the formulation comprising: (a) from 5 to 70% w/w of primary surfactant, this surfactant having an HLB of from 1 to 12 and/or a cloud point of from 20 to 70° C.; (b) from 2 to 40% w/w of water-insoluble organic carrier liquid; and (c) water. Also provided is the use of this formulation to prevent and/or reduce foam in a fluid system, or as a processing aid to control foam production in a fluid system. The formulation may be used in an aqueous fluid system, such as an oilfield.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: May 21, 2019
    Inventors: Kevan Hatchman, Gareth Collins, Chris Jones
  • Patent number: 10252189
    Abstract: An object of the present invention is to provide an oil-in-water emulsion defoaming agent that is superior in defoaming properties (initial defoaming property and defoaming durability) and stability (emulsion stability). The present invention provides an oil-in-water emulsion defoaming agent including hydrophilic fumed silica (C), wherein an oil phase (A) is emulsified and dispersed in a water phase (B). Preferably, the content of the oil phase (A) is 10 to 50% by weight, the content of the hydrophilic fumed silica (C) is 0.1 to 6% by weight, and the content of the water phase (B) is 44 to 89.9% by weight based on the weight of the oil phase (A), the hydrophilic fumed silica (C), and the water phase (B). The weight ratio (A/C) of the oil phase (A) to the hydrophilic fumed silica (C) is preferably from 2 to 100.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: April 9, 2019
    Assignee: SAN NOPCO LTD.
    Inventors: Yohei Matsumura, Nobuo Hisada, Yoshihide Izumi
  • Patent number: 10239759
    Abstract: A method of producing silica-based particles includes, when a dispersion liquid of composite oxide particles is prepared by simultaneously adding an aqueous silicate solution and/or an acidic silicic acid solution and an aqueous solution of an alkali-soluble inorganic compound in an alkali aqueous solution or in an alkali aqueous solution with seed particles dispersed therein, if required, the aqueous silicate solution and/or the acidic silicic acid solution and the aqueous solution of alkali-soluble inorganic compound are added so that the molar ratio of MOx/SiO2 are in a range from 0.01 to 2, herein MOx denoting an inorganic oxide other than silica and SiO2 denoting silica to prepare the dispersion liquid of composite oxide particles with an average diameter (Dp1) in a range from 3 to 300 nm.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: March 26, 2019
    Inventors: Ryo Muraguchi, Mitsuaki Kumazawa, Toshiharu Hirai
  • Patent number: 10227238
    Abstract: A method of preparing a particulate material comprising the steps of adding silicic acid solution, optionally doped with aluminum, optionally added to a slurry of pre-existing nanoparticles at a neutral to slightly acidic pH of no more than seven, and at a temperature of about 20° to 30° C. This yields a polysilicate particulate dispersion. Then, the pH of the dispersion is raised to greater than seven, to stabilize/reinforce particles of the particulate dispersion. Optionally, the particles may be dried, and have increased porosity and surface area.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: March 12, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Francois Batllo, Brian T. Holland, John M. Krasniewski, Kim M. Long, Michael A. Romba, Sascha Welz, David P. Workman
  • Patent number: 10220377
    Abstract: The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 5, 2019
    Inventors: Yuusuke Ohshima, Hitoshi Kubo, Tomoko Ishikawa, Noriaki Nakamura, Junichi Taniuchi, Yoshiteru Tsuchiya, Hiroaki Takahashi, Hidenori Takanezawa, Kenichi Inoue, Syunsuke Kato, Hirokazu Shiraishi
  • Patent number: 10214708
    Abstract: Surfactant systems are provided using microfibrous cellulose to suspend particulates. In one embodiment the surfactant system includes a microfibrous cellulose at a concentration from about 0.05% to about 1.0% (w/w), a surfactant at a concentration of about 5% to about 50% (w/w active surfactant), and a particulate. Also provided herein are methods for preparing surfactant systems including microfibrous cellulose.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: February 26, 2019
    Assignee: CP KELCO U.S., INC.
    Inventors: John M. Swazey, Neil A. Morrison
  • Patent number: 10213066
    Abstract: A coreless roll of an absorbent sheet product, such as napkins, toilet paper, towels etc., including a spirally wound continuous web of absorbent material having a first end and a second end and a coating composition comprising a specific polymer coated onto the second end is disclosed. The coreless roll has excellent resistance to collapsing, as well as excellent flexibility and elasticity. Moreover, the coreless roll has excellent disintegrability in water and can be used along its whole length. Also disclosed is a process for the manufacture of the coreless roll.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: February 26, 2019
    Inventors: Nicolas Weisang, Donald Barredo
  • Patent number: 10207972
    Abstract: Provided are azeotropic or azeotrope-like mixtures of 1,3,3,3-tetrachloroprop-1-ene (HCO-1230zd) and hydrogen fluoride. Such compositions are useful as a feed stock in the production of HFC245fa and HCFO1233zd.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 19, 2019
    Assignee: Honeywell international Inc.
    Inventors: Daniel C. Merkel, Konstantin A. Pokrovski, Hsueh Sung Tung, Haiyou Wang, Ryan Hulse
  • Patent number: 10202550
    Abstract: A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 12, 2019
    Assignee: Equinor Energy AS
    Inventors: Jens Emil Vindstad, Heidi Mediaas, Knut Vebjørn Grande
  • Patent number: 10197707
    Abstract: Various non-limiting embodiments of the present disclosure relate to ophthalmic devices comprising photochromic materials comprising a reactive substituent. For example, the present disclosure contemplates ophthalmic devices comprising photochromic materials, such as photochromic naphthopyrans and indeno-fused naphthopyrans having a reactive substituent comprising a reactive moiety linked to the photochromic naphthopyran by one or more linking groups. In certain non-limiting embodiments, the reactive moiety comprises a polymerizable moiety. In other non-limiting embodiments, the reactive moiety comprises a nucleophilic moiety. Other non-limiting embodiments of the present disclosure relate to methods of making the photochromic ophthalmic device, wherein the photochromic ophthalmic devices comprise the photochromic naphthopyrans described herein.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: February 5, 2019
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Wenjing Xiao, Barry Van Gemert, Shivkumar Mahadevan, Frank Molock
  • Patent number: 10190055
    Abstract: The present invention generally relates to methods for resolving water and oil emulsions in the produced fluid of an oil production system comprising adding a structured copolymer reverse emulsion breaker to the produced fluid of the crude oil production system in an amount effective for resolving an oil-in-water emulsion. In particular, these methods for resolving an oil-in-water emulsion can be used in separation processes where the oil and solids in the produced fluid are separated from the produced water in the produced fluid.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 29, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Vittoria Balsamo De Hernandez, Jenny L. Phan, Pious Kurian
  • Patent number: 10192660
    Abstract: The compositions and methods herein relate to stable dispersions of long chain carboxylic acid-stabilized magnetite nanoparticles dispersed in alcohol. These compositions are useful in advanced biomedical applications.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: January 29, 2019
    Assignee: Sri Lanka Institute of Nanotechnology (PVT) Ltd.
    Inventors: Veranja Karunaratne, Gayan Priyadharshana, Sunanda Gunasekara, Nilwala Kottegoda, Atula Senaratne
  • Patent number: 10184025
    Abstract: The present disclosure is directed to methods of preparing stable suspensions of precious metal nanoparticles and methods for attaching bio-molecules to the nanoparticles. The formation of nanoparticles can be accomplished by either chemical synthesis or pulsed laser ablation in a liquid. The present disclosure reveals the importance of controlling the conductivity of the dispersion medium during pulsed laser ablation in a liquid to control the particle size of the nanoparticles. The present disclosure also reveals the importance of adjusting and maintaining the conductivity in a range of 25 ?S/cm or less during storage of the nanoparticles and just prior to performing bioconjugation reactions. The control of conductivity is an important process for maintaining the nanoparticles as a stable non-aggregated colloidal suspension in a dispersion medium.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: January 22, 2019
    Assignee: IMRA America, Inc.
    Inventors: Yuki Ichikawa, Andrius Marcinkevicus, Masayuki Ito, Wei Qian
  • Patent number: 10184087
    Abstract: A method and system isolate paraffinic hydrocarbons. In an embodiment, a method includes providing cutter stock to a tank containing a sludge. The method also includes circulating the cutter stock and the sludge. The method further includes heating the cutter stock and the sludge. Moreover, the method includes providing water and a paraffinic hydrocarbon isolation composition to the tank. The method also includes determining if the sludge has separated into a three phase separation comprising a paraffinic hydrocarbon layer, a water layer, and a layer of settled solids.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 22, 2019
    Assignee: TriStar PetroServ, Inc.
    Inventor: Stephen D. Matza
  • Patent number: 10179881
    Abstract: A method and composition for isolating a paraffinic hydrocarbon layer from a sludge comprising a mixture of paraffinic hydrocarbons, water, and solids are provided. The method comprises providing a paraffinic hydrocarbon isolation composition comprising isopropylamine dodecylbenzene sulfonate, a surfactant, and a solvent; contacting the sludge with the paraffinic hydrocarbon isolation composition; and allowing the paraffinic hydrocarbon isolation composition to separate the sludge into a three phase separation comprising a paraffinic hydrocarbon layer, a water layer, and a layer of settled solids.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 15, 2019
    Assignee: TriStar PetroServ, Inc.
    Inventor: Stephen D. Matza
  • Patent number: 10173189
    Abstract: The present invention concerns a method for preparing a suspension of carbon nanotubes in an aqueous solution comprising the following successive steps consisting of subjecting an aqueous solution containing carbon nanotubes and a surfactant to at least one cycle of freezing in liquid nitrogen and thawing; and subjecting said thawed solution to an ultrasound treatment. The present invention also concerns a suspension of carbon nanotubes, and in particular a suspension of long carbon nanotubes, that can be prepared by such a method.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: January 8, 2019
    Inventors: Nicolas Debski, Martine Mayne-L'Hermite, Mathieu Pinault
  • Patent number: 10167223
    Abstract: The present invention relates to a hydrothermal method for preparing a doped vanadium dioxide powder, the doped powder having a chemical composition of V1-XMXO2, 0<X?0.5, and M is a doping element, which is introduced to control a particle size and a morphology of the doped powder, the doping element M is selected from a group consisting of manganese, iron, cobalt, nickel, copper, zinc, tin, indium, antimony, gallium, germanium, lead and bismuth, the method comprising a step of a precursor treatment of titrating a quadrivalent vanadium aqueous solution with a basic reagent to obtain a precursor suspension, wherein the precursor treatment involves titrating the quadrivalent vanadium aqueous solution until the emergence of the precursor suspension. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: January 1, 2019
    Inventors: Yanfeng Gao, Chuanxiang Cao, Lei Dai, Hongjie Luo, Minoru Kanehira
  • Patent number: 10160894
    Abstract: Provided is a non-spherical silica sol containing non-spherical silica fine particles dispersed in a dispersion medium, the non-spherical silica fine particles having an average particle diameter in a range of 3 to 150 nm as measured by dynamic light scattering, a minor-diameter/major-diameter ratio in a range of 0.01 to 0.8, and a specific surface area in a range of 10 to 800 m2/g, and also having a plurality of wart-like projections on the surfaces thereof, and a process for producing the non-spherical silica sol. The non-spherical silica fine particles contained in the non-spherical silica sol have a unique structure different from the structure of ordinary non-spherical silica fine particles.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 25, 2018
    Assignee: JGC Catalysts and Chemicals Ltd.
    Inventors: Hiroyasu Nishida, Kazuhiro Nakayama
  • Patent number: 10137503
    Abstract: An apparatus and process for creating uniformly sized, spherical nanoparticles from a solid target. The solid target surface is ablated to create an ejecta event containing nanoparticles moving away from the surface. Ablation may be caused by laser or electrostatic discharge. At least one electromagnetic field is placed in front of the solid target surface being ablated. The electromagnetic field manipulates at least a portion of the nanoparticles as they move away from the target surface through the electromagnetic field to increase size and spherical shape uniformity of the nanoparticles. The manipulated nanoparticles are collected.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: November 27, 2018
    Assignee: ATTOSTAT, INC.
    Inventor: William Niedermeyer