Patents Examined by Steven J Bos
  • Patent number: 10766784
    Abstract: A method of preparation of semiconductor material. The method includes: adding an organic substance containing a benzene ring and dodecacalcium hepta-aluminate (12CaO.7Al2O3 or C12A7) to a test tube, and sealing the test tube; heating the test tube to a temperature of 200-300° C., and holding the temperature for 1 to 3 hours; and continuously heating the test tube to a temperature of 900-1300° C., and holding the temperature for 10-120 hours.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: September 8, 2020
    Inventors: Shengwen Tang, Wenzhi Yu, Wei Zhou, Yang Li, Hubao A
  • Patent number: 10763491
    Abstract: Preparation, characterization, and an electrochemical study of Mg0.1V2O5 prepared by a novel sol-gel method with no high-temperature post-processing are disclosed. Cyclic voltammetry showed the material to be quasi-reversible, with improved kinetics in an acetonitrile-, relative to a carbonate-, based electrolyte. Galvanostatic test data under a C/10 discharge showed a delivered capacity >250 mAh/g over several cycles. Based on these results, a magnesium anode battery, as disclosed, would yield an average operating voltage ˜3.2 Volts with an energy density ˜800 mWh/g for the cathode material, making the newly synthesized material a viable cathode material for secondary magnesium batteries.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 1, 2020
    Assignee: The Research Foundation for the State University of New York
    Inventors: Kenneth Takeuchi, Esther Takeuchi, Amy Marschilok
  • Patent number: 10745287
    Abstract: A method for preparing industrial grade lithium carbonate from crude lithium fluoride includes the following steps: a, pulping by stirring crude lithium fluoride into a pulp, and adding an acid to prepare a crude lithium fluoride pulp-like material; b, double decomposition by adding the lithium fluoride pulp-like material obtained in the step a into a boiling calcium chloride solution, and then adding an alkaline substance to obtain a lithium chloride solution; c, lithium carbonate precipitation by heating the lithium chloride solution obtained in the step b, adding a carbonate solution according to the mass of lithium in the lithium chloride solution, stirring at a constant temperature, and filtering, wherein the filter cake is a lithium carbonate product. The lithium fluoride is decomposed at one time in a low-acidity environment; fluoride ions are removed; and a double decomposition reaction is used to decompose the lithium fluoride into lithium ions and calcium fluoride precipitates.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 18, 2020
    Inventors: Xunbing Liu, Jianjun Ouyang, Xijuan Liu
  • Patent number: 10741890
    Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of valuable charge materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. However, LiFePO4 is a waste stream charge material often discarded due to infeasibility of recycling. LiFePO4 is precipitated as FePO4 and remains as a by-product, along with graphite and carbon, which are not dissolved into the solution. FePO4 can be separated from graphite and carbon, FePO4 can be used to synthesize LiFePO4 as cathode materials and graphite can be regenerated as anode materials.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: August 11, 2020
    Assignee: Worcester Polytechnic Institute
    Inventors: Yan Wang, Xiaotu Ma
  • Patent number: 10741839
    Abstract: Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. A method of preparing an active lithium metal oxide material suitable for use in an electrode for a lithium electrochemical cell comprises the steps of: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: August 11, 2020
    Inventors: Jason Croy, Arturo Gutierrez, Michael M. Thackeray, Meinan He
  • Patent number: 10738369
    Abstract: The present invention relates to a method of separating rare earth elements from rare earth polishing powder waste by a hydrometallurgical process, the method comprising the steps of: synthesizing sodium rare-earth double sulfates by adding sulfuric acid and sodium hydroxide to the rare earth polishing powder waste; converting the sodium rare-earth double sulfates into rare earth hydroxides; and separating cerium (Ce), lanthanum (La), praseodymium (Pr), and neodymium (Nd) from the rare earth hydroxides by adding hydrochloric acid and sulfuric acid. The present invention makes it possible to recover 99% or more of rare earth elements, including cerium (Ce), lanthanum (La), praseodymium (Pr), and neodymium (Nd) from rare earth polishing powder waste, and enables the recovered rare earth elements to be recycled, thereby achieving great industrial economic benefits.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 11, 2020
    Inventors: Namil Um, Mi-Jeong Jeong, Young Yeul Kang, Ki-Heon Kim, Cheol Woo Yoon, Yong Jun Kim, Yoon-A Cho, Byung-Seo Lim, Sun Kyoung Shin, YoungKee Lee
  • Patent number: 10734144
    Abstract: A production method for metal oxide particles includes: obtaining precursor particles of a metal oxide by performing a synthesis reaction of the precursor particles in the presence of an organic compound; and converting the obtained precursor particles into metal oxide particles by heating an aqueous solution containing the precursor particles to 300° C. or higher and pressurizing the aqueous solution at a pressure of 20 MPa or higher.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 4, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Masashi Shirata, Yoichi Hosoya
  • Patent number: 10718036
    Abstract: A method for hydrometallurgical extraction of rare earth elements and niobium from a an ore or a flotation concentrate containing rare earth elements, niobium, iron and alkali earth metals, the method comprising removal of the alkali earth metals using an acidic solution of a pH in a range between about 1 and about 6, leaching the rare earth elements; precipitation of the rare earth elements from a resulting pregnant leach solution using sodium hydroxide, sodium carbonate and sodium bicarbonate; physically separating metal hydroxides from a resulting leach residue containing metal hydroxides, iron oxide, silicate, and pyrochlore; removing the iron oxide by physical beneficiation and then by atmospheric acid leaching; and recovering niobium from a clean solid residue by pressurized acid leaching.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: July 21, 2020
    Inventor: Pouya Hajiani
  • Patent number: 10720659
    Abstract: This invention is directed to regeneration of solutions comprising metal ions, and production of valuable hydroxide compounds. Specifically, the invention is related to regeneration of spent electrolyte solutions comprising metal ions (e.g. Al ions), such as electrolyte solutions used in metal/air batteries. The invention is further related to production of layered double hydroxides, and, optionally aluminum tri-hydroxide from aluminate.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: July 21, 2020
    Assignee: PHINERGY LTD
    Inventors: Aviv Tzidon, Mark Weaver, Ilya Yakupov, Dekel Tzidon, Avraham Yadgar, Nicola Menegazzo
  • Patent number: 10704120
    Abstract: The present invention provides a method for easy and efficient recovery of high purity scandium from nickel oxide ore, the method comprising: an adsorption step for passing a scandium-containing solution through an ion exchange resin to adsorb scandium on the ion exchange resin; an elution step for eluting scandium from the ion exchange resin to obtain a post-elution solution; an impurity extraction step in which after the elution step, the scandium-containing solution is subjected to a first solvent extraction using an amine-based impurity extractant and is separated into a first aqueous phase containing scandium and into a first organic phase containing impurities; and a scandium extraction step in which the first aqueous phase is subjected to a second solvent extraction using an amide derivative-containing scandium extractant to obtain a second organic phase containing scandium.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 7, 2020
    Inventors: Itsumi Matsuoka, Hiroshi Kobayashi, Yusuke Senba
  • Patent number: 10695694
    Abstract: The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from minerals, and recycled products.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 30, 2020
    Inventor: David Henry Snydacker
  • Patent number: 10689727
    Abstract: A method for extracting a rare earth element from a rare earth-containing substance, the method comprising mixing the rare earth-containing substance with a protic ionic liquid, such as: wherein R1 is selected from hydrogen atom and hydrocarbon groups containing 1 to 6 carbon atoms; R2 and R3 are independently selected from hydrocarbon groups containing 1 to 12 carbon atoms; and X? is an anionic species; to produce a composition of the formula (RE)(amide)yXz at least partially dissolved in the protic ionic liquid, wherein RE is at least one rare earth element having an atomic number selected from 39, 57-71, and 90-103; y is 2-6; z is a number that charge balances the total positive charge of RE; and the amide is the conjugate base of the cationic portion of the protic ionic liquid of Formula (1) and has the following formula:
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: June 23, 2020
    Assignee: UT-Battelle, LLC
    Inventors: John William Freiderich, Huimin Luo, Bruce A. Moyer, Sheng Dai
  • Patent number: 10683565
    Abstract: A method of reclaiming cadmium material from photovoltaic (PV) modules is provided. The method includes submerging one or more portions of a PV module in a solution including non-distilled water, wherein the one or more portions of the PV module are submerged until cadmium material present on the PV module dissolves into the solution, boiling the solution until the dissolved cadmium material precipitates, and collecting the precipitated cadmium material.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: June 16, 2020
    Inventor: Zoltan J. Kiss
  • Patent number: 10669161
    Abstract: There are provided an oriented body such as a magnetic sheet in which a value of degree of orientation of magnetic particles is beyond 3.5, and a method for producing the same, and a device for producing the same, wherein the oriented body such as a magnetic sheet is produced through the steps of: mixing a mixed solution containing a solvent and a vehicle and ?-iron oxide particles by shaking stirring, and dispersing the ?-iron oxide particles in the mixed solution; providing a mixed solution in which the ?-iron oxide particles are dispersed, on a predetermined substrate; and removing the solvent while applying a magnetic field to the substrate provided with the mixed solution, to obtain an oriented body.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: June 2, 2020
    Inventors: Shin-ichi Ohkoshi, Hiroko Tokoro, Koji Nakabayashi, Asuka Namai, Kenta Imoto, Kenji Masada
  • Patent number: 10651479
    Abstract: A method of recovering metal compounds from solid oxide fuel cell scrap includes processing the solid oxide fuel cell scrap to form a powder, digesting the processed scrap, extracting lanthanum oxide and cerium oxide from a solution containing the digested processed scrap, extracting a zirconium compound from the solution after extracting the lanthanum oxide and cerium oxide, and extracting scandium compound from the solution extracting the zirconium compound from the solution.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 12, 2020
    Inventors: Lunzhi Liao, Christopher Jeffrey Hartley, Andrew Sarmiento
  • Patent number: 10640847
    Abstract: The present invention relates to the recovery of rare earths, scandium, niobium, tantalum, zirconium, hafnium, titanium, and the like from ores or concentrates containing fluorine. More specifically, the ores or concentrates are pretreated by carbochlorination to convert the rare earths and other metals into their chlorides and then subjected to dilute hydrochloric acid leaching to recover the valuable rare earths and other metals from the leachate. Niobium, tantalum, zirconium, hafnium, and titanium can be recovered as their chlorides or oxychlorides from the gaseous products of carbochlorination, or converted into their oxides while simultaneously regenerating chlorine.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: May 5, 2020
    Assignee: Hazen Research, Inc.
    Inventors: Kang Sun, David R. Baughman, Wayne W. Hazen
  • Patent number: 10632449
    Abstract: A method of mixing using a tubular reactor wherein process material continuously passes through the tubular reactor which is operating at predetermined reaction conditions. The tubular reactor is rotated through reciprocating arcs about the longitudinal axis of the tube as the process material passes therethrough. Static and/or dynamic mixers or agitators may be provided within the tubular reactor.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 28, 2020
    Assignee: Ashe Morris Ltd.
    Inventor: Robert Ashe
  • Patent number: 10629903
    Abstract: The present invention relates to a method for preparing a lithium composite oxide and a lithium composite oxide prepared thereby and, more specifically, to: a method for preparing a lithium composite oxide, capable of preparing a lithium-ion secondary battery with high capacity by adjusting the amount of a basic solution added according to the nickel content during the preparation of a lithium composite oxide through a co-precipitation reaction, thereby adjusting the pH of the reactor, and thus improving the particle density and increasing the tap density, and a lithium composite oxide prepared thereby.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: April 21, 2020
    Inventors: Yang-Kook Sun, Sung-June Youn
  • Patent number: 10626482
    Abstract: A system for recovering rare earth elements from coal ash includes a leaching reactor, an ash dryer downstream of the leaching reactor, and a roaster downstream of the ash dryer that is cooperatively connected to both the leaching reactor and the ash dryer. Coal ash is mixed with an acid stream such that rare earth elements present in the coal ash are dissolved in the acid stream, thereby creating (i) a leachate containing the rare earth elements and (ii) leached ash. The leachate is heated to obtain acid vapor and an acid-soluble rare earth concentrate. Mixing of the coal ash with the acid stream can occur in a leaching reactor and heating of the leachate can occur in a roaster. The acid-soluble rare earth concentrate can be fed to a hydrometallurgical process to separate and purify the rare earth elements.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: April 21, 2020
    Inventors: Rick Peterson, Michael Heinrichs, Vinay V. Gadkari, Rachid Taha, Slawomir Winecki, Darwin Argumedo
  • Patent number: 10604821
    Abstract: A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: March 31, 2020
    Assignee: Ethox Chemicals, LLC
    Inventors: Charles F. Palmer, Jr., John W. McKiernan, Charles F. Palmer, III