Patents Examined by Amy C Bonaparte
  • Patent number: 10894764
    Abstract: Precipitation of an ammonium salt is prevented while suppressing an increase in water content of the aqueous urea solution which is to be supplied to a urea granulation step, when recovering and using urea and NH3 in a gas which contains urea dust and NH3 and which arises from a urea granulation step.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: January 19, 2021
    Assignee: TOYO ENGINEERING CORPORATION
    Inventors: Shuhei Nakamura, Akiko Sugiura, Keigo Sasaki
  • Patent number: 10894761
    Abstract: Disclosed are a recyclable clean fracturing fluid thickener, a preparation method and a recovery method thereof, and a high-temperature resistant clean fracturing fluid, which relate to the stimulation treatment of oil and gas fields. Diethanolamine and thionyl chloride are used as raw materials and reacted to obtain an intermediate, which is then reacted with an unsaturated fatty acid amidopropyl dimethylamine to produce the recyclable clean fracturing fluid thickener. The clean fracturing fluid can be used in the fracturing stimulation treatment of low and medium permeability reservoirs.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: January 19, 2021
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Xiaojiang Yang, Jincheng Mao, Heng Zhang
  • Patent number: 10870622
    Abstract: The present invention provides a method of making carboxylic acids from levulinic acid, such as succinic acid and 3-hydroxypropanoic acid, by reacting levulinic acid with an oxidant such as hydrogen peroxide under acidic or basic conditions.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: December 22, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Mark Mascal, Saikat Dutta, Linglin Wu
  • Patent number: 10870584
    Abstract: An integrated process for production of urea and urea-ammonium sulphate (“UAS”) comprises: a urea synthesis step carried out in a urea synthesis reactor; a recovery and concentration step, wherein a urea solution produced in the urea synthesis step is progressively concentrated in at least one recovery section and in a concentration section, recovering unreacted ammonia and carbon dioxide and water from said urea solution; a step of producing ammonium sulphate by reaction of sulphuric acid and ammonia in an ammonium sulphate production apparatus; a step of mixing said ammonium sulphate with concentrated urea coming from the concentration section to produce a UAS mixture; in the ammonium sulphate production step, at least a part of the ammonia is provided by at least one off-gas containing ammonia and recovered from the recovery and concentration step.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 22, 2020
    Assignee: SAIPEM S.p.A.
    Inventors: Lorenzo Bruno, Lino Carlessi
  • Patent number: 10865163
    Abstract: Methods of synthesizing compounds using CO2 as a directing group for C—H functionalization, and compounds made thereby, are described.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 15, 2020
    Assignee: The University of Toledo
    Inventors: Michael C. Young, Mohit Kapoor
  • Patent number: 10858311
    Abstract: The invention relates to a method for preparing an isocyanate by phosgenating the corresponding primary amine in the gas phase, wherein the gaseous reaction product mixture is cooled by being brought into contact with at least one flow stream of a quenching liquid in a quenching zone, wherein the quenching liquid used in total comprises, based on the total mass, organic solvents in a proportion of maximally 50.0% by mass, and the remainder of up to 100% by mass consists of at least the isocyanate to be produced, thereby obtaining a mixture of the reaction product mixture and the quenching liquid. Furthermore, the mixture obtained in this manner of the reaction product mixture and the quenching liquid is separated into a liquid and a gaseous phase in a collection zone, and a liquid solvent intermediate flow comprising more than 50.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: December 8, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Wolfgang Taube, Rainer Bruns, Artur Mausbach
  • Patent number: 10851124
    Abstract: To provide a method for producing a phosphoryl imide salt represented by the following general formula (1) at a satisfactory yield by cation exchange. The method comprises the step of performing cation exchange by bringing a phosphoryl imide salt represented by the following general formula (2) into contact with a cation exchange resin having M1 n+ or a metal salt represented by the general formula (4) in an organic solvent having a water content of 0.3% by mass or less.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: December 1, 2020
    Assignee: CENTRAL GLASS CO., LTD.
    Inventors: Mikihiro Takahashi, Takayoshi Morinaka, Masutaka Shinmen, Ryosuke Terada
  • Patent number: 10844001
    Abstract: The present invention relates to a process to prepare ethylene amines of the formula NH2—(C2H4—NH—)pH wherein p is at least 3 or derivatives thereof wherein one or more units —NH—C2H4—NH— may be present as a cyclic ethylene urea unit or between two units —NH—C2H4—NH— a carbonyl moiety is present, by reacting an ethanolamine-functional compound, an amine-functional compound in the presence of a carbon oxide delivering agent, wherein the molar ratio of carbon oxide delivering agent to amine-functional compound is at least 0.6 to 1.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: November 24, 2020
    Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Rolf Krister Edvinsson, Eike Nicolas Kantzer, Per Fredrik Olmo Larsson, Karl Fredrik Lake, Antoon Jacob Berend Ten Kate
  • Patent number: 10844005
    Abstract: Provided is a method for preparing an N-cyclopropylmethyl aniline compound, which comprises reacting a compound represented by Formula IV with cyclopropyl formaldehyde in the presence of metal zinc and an acid to generate an N-cyclopropylmethyl aniline compound represented by Formula I. The method of the present disclosure has mild reaction conditions, short reaction time, a high yield, simple processes, simple operations and low costs, and is more applicable to industrial production.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: November 24, 2020
    Assignee: CHANG SHA JIA QIAO BIOTECH CO., LTD.
    Inventors: Liangming Luo, Chaoqun Huang, Jintao Zhu, Zheng Luo, Rong Zhang
  • Patent number: 10843998
    Abstract: A method of producing a bis-acyloxylated exomethylene compound represented by general formula (III), including reacting a monoacyloxylated exomethylene compound represented by general formula (I), a carboxylic acid represented by general formula (II), and oxygen in a liquid phase in the presence of a catalyst and optionally a solvent:
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: November 24, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Yusuke Murata, Naoya Minamoto, Mitsumasa Kaneko, Ryosuke Shimizu
  • Patent number: 10836713
    Abstract: The invention relates to a method for producing isocyanates by phosgenating the corresponding primary amines in the gas phase, wherein the raw gaseous reaction product mixture is cooled and partially condensed by being brought into contact with at least one flow of a quenching liquid, and using a part of the condensed reaction product mixture as a component, optionally the only component, of the at least one flow of the quenching liquid after an additional cooling process. The quenching liquid used in total comprises, based on the total mass, organic solvents in a proportion of maximally 25% by mass, and the remainder of up to 100% by mass consists of at least the isocyanate to be produced. Furthermore, the reaction product mixture components which are not condensed under the influence of the quenching liquid are freed of isocyanate components in a scrubber column, and a scrubber liquid- and isocyanate-containing liquid flow is obtained with, based on the total mass, a content of organic solvents of 0.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: November 17, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Joachim Zechlin, Thomas Stetten
  • Patent number: 10836705
    Abstract: A method of producing pharmaceutical grade bretylium tosylate comprising low amounts of mutagenic impurities. The method comprises forming bretylium tosylate having a purity of less than 99.5% and purifying the bretylium tosylate by: i) forming a slurry of the bretylium tosylate with a mixture of acetone and ethyl acetate; ii) filtering the slurry to obtain purified bretylium tosylate. The bretylium tosylate so produced has a purity of at least 99.5%, and suitably comprises less than 0.5 ppm of the potentially mutagenic impurity ethyl p-toluenesulfonate. The bretylium tosylate so produced also suitably comprises less than 0.5 ppm of the potentially mutagenic impurity 2-bromobenzylbromide.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: November 17, 2020
    Assignee: TOPCHEM PHARMACEUTICALS LIMITED
    Inventor: Donal Coveney
  • Patent number: 10834924
    Abstract: The present invention relates generally to peroxyformic acid forming compositions, methods for forming peroxyformic acid, preferably in situ, using the peroxyformic acid forming compositions. The present invention also relates to the peroxyformic acid formed by the above compositions and methods. The present invention further relates to the uses of the peroxyformic acid, preferably in situ, for treating a surface or a target. The present invention further relates to methods for treating a biofilm using peroxyformic acid, including peroxyformic acid generated in situ.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 17, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Junzhong Li, Allison Brewster, Richard Staub, Steven J. Lange, Taz Cheritu, Jonathan P. Fast, Catherine Hanson
  • Patent number: 10836704
    Abstract: Preparing ethanolamines/ethyleneamines in the presence of an amination catalyst prepared by reducing a calcined catalyst precursor containing one or more metals of groups 8, 9, 10 and/or 11 and low basicity achieved by: a) coprecipitating catalyst precursor and active composition additionally contains alkali metals or alkaline earth metals; b) the catalyst precursor is prepared by impregnating a support material or precipitative application onto a support material containing alkali metals, Be, Ca, Ba, Sr, hydrotalcite, chrysotile or sepiolite; c) the catalyst precursor is prepared by impregnating a support material or precipitative application onto a support material and the active composition of the catalyst support contains one or more of alkali metals and alkaline earth metals; d) the catalyst precursor is calcined at temperatures of 600° C. or more; or e) the catalyst precursor is prepared by a combination of a) and d), b) and d), or c) and d).
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 17, 2020
    Assignee: BASF SE
    Inventors: Marie Katrin Schroeter, Alvaro Gordillo, Andrei-Nicolae Parvulescu, Johann-Peter Melder, Carlos Lizandara Pueyo, Juergen Bechtel, Thomas Heidemann, Stephan A. Schunk, Ulrich Mueller
  • Patent number: 10836710
    Abstract: The present invention generally relates to a process using a mechanochemical approach exploiting the mechanical milling of reactants for the manufacturing of acetyl Iopamidol and, more generally, of key intermediates of radiographic contrast agents, and of the contrast agents themselves.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 17, 2020
    Assignee: BRACCO IMAGING SPA
    Inventors: Alessandro Barge, Francesca Baricco, Giancarlo Cravotto, Roberta Fretta, Luciano Lattuada
  • Patent number: 10829446
    Abstract: Compound of formula I: wherein: A is selected from: (i) where RF1 is H or F; (ii) (iii) a N-containing C6 heteroaryl group; and B is where X1 is either CRF2 or N, where RF2 is H or F; X2 is either CR3 or N, where R3 is selected from H, Me, Cl, F OMe; X3 is either CH or N; X4 is either CRF3 or N, where RF3 is H or F; where only one or two of X1, X2, X3 and X4 may be N; and R4 is selected from I, optionally substituted phenyl, optionally substituted C5-6 heteroaryl; optionally substituted C1-6 alkyl and optionally substituted C1-6 alkoxy, which are useful in the treatment of a condition ameliorated by the inhibition of MOZ.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 10, 2020
    Assignees: MONASH UNIVERSITY, The Walter and Eliza Hall Institute of Medical Research
    Inventors: Anne Kathrin Voss, Jonathan Baell, Huu Nghi Nguyen, David J. Leaver, Benjamin L. Cleary, H. Rachel Lagiakos, Bilal Nadeem Sheikh, Timothy John Thomas
  • Patent number: 10829429
    Abstract: A process for the transesterification of methyl-2-ethylhexanoate with triethylene glycol to produce triethylene glycol di-2-ethylhexanoate is provided. In the process, methyl-2-ethylhexanoate is combined with triethylene glycol to form a first mixture. The first mixture is heated in the presence of a catalyst to form a second mixture comprising methanol and triethylene glycol di-2-ethylhexanoate. Methanol is separated from the second mixture to yield triethylene glycol di-2-ethylhexanoate. Na2CO3, Cs2CO3, K2CO3, Rb2CO3, sodium methoxide or titanium isopropoxide are suitable catalysts.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: November 10, 2020
    Assignee: Eastman Chemical Company
    Inventors: Sumit Chakraborty, Steven J. Adams, Robert Thomas Hembre, Scott Donald Barnicki, David Alan Jenkins
  • Patent number: 10829442
    Abstract: A process for the preparation of N-(dialkylaminoalkyl)-carbamic acid esters, in particular (propyl N-[3-(dimethylamino)propyl] carbamate) comprising an oxidative carbonylation reaction of a compound of general structure (II) wherein each of R1 and R2, equal to or different from each other, are independently selected from an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; R3 is selected from an alkyl group having 1 to 36 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; each of R?, R? and R4, equal to or different from each other, are independently selected from H, an alkyl group having 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group; and n is an integer in the range from 1 to 8, with a hydroxyl compound of general formula (III), R3—OH (III) and in the presence of a catalyst system.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: November 10, 2020
    Assignee: Taminco BVBA
    Inventors: Frederik Van Waes, Kristof Moonen, Dieter Ulrichts
  • Patent number: 10822296
    Abstract: A novel highly stable sodium diacetate crystal, in which the volatilization of acetic acid can be suppressed for a long period. More specifically, a sodium diacetate crystal having a median diameter in the range of 300 to 3000 ?m.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: November 3, 2020
    Assignee: FUSO PHARMACEUTICAL INDUSTRIES, LTD.
    Inventors: Hideo Shimamura, Tadataka Murakami, Yasunori Kurata, Ayaka Kato
  • Patent number: 10822358
    Abstract: The present invention relates primarily to processes for preparing particular phosphorus-containing ?-aminonitriles of the formulae (Ia) and (Ib) defined hereinafter from corresponding phosphorus-containing cyanohydrin esters and to the use thereof for preparation of glufosinate or of glufosinate salts. The present invention further relates to a process for preparing glufosinate or glufosinate salts.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: November 3, 2020
    Assignee: BASF SE
    Inventors: Gunter Karig, Frank Memmel, Mark James Ford