Search Patents
  • PROCESS AND APPARATUS FOR TREATING A GAS CONTAINING A CONTAMINANT
    Publication number: 20090112043
    Abstract: Apparatus, process and article for treating a gas containing one or more of a chemical and/or biological contaminant. The process includes contacting the gas with an aggregate composition comprising an insoluble rare earth-containing compound to form a gas depleted of chemical and active biological contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. The composition comprises no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate has been sintered. A suitable insoluble cerium-containing compound can be derived from cerium carbonate. In one embodiment, the aggregate composition consists essentially of one or more cerium oxides, and optionally, a binder. Although intended for a variety of fluid treatment applications, such applications specifically include the treatment of breathing gases such as air that may contain chemical and/or biological contaminants.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: CHEVRON U.S.A. INC.
    Inventors: John L. Burba, III, Tim L. Oriard
  • Process and apparatus for treating a gas containing a contaminant
    Patent number: 8252087
    Abstract: Apparatus, process and article for treating a gas containing one or more of a chemical and/or biological contaminant. The process includes contacting the gas with an aggregate composition comprising an insoluble rare earth-containing compound to form a gas depleted of chemical and active biological contaminants. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. The composition comprises no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate has been sintered. A suitable insoluble cerium-containing compound can be derived from cerium carbonate. In one embodiment, the aggregate composition consists essentially of one or more cerium oxides, and optionally, a binder. Although intended for a variety of fluid treatment applications, such applications specifically include the treatment of breathing gases such as air that may contain chemical and/or biological contaminants.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 28, 2012
    Assignee: Molycorp Minerals, LLC
    Inventors: John L. Burba, III, Tim L. Oriard
  • Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator
    Patent number: 6925924
    Abstract: A non-linear shaped charge perforator for use in perforating an oil and gas formation into which a wellbore has been drilled comprises a monolithic, axisymmetric metal case in which is disposed a main explosive charge between the front of the case, which is closed with a concave metal liner, and the closed back end of the case. The main explosive charge contains multiple initiation points, preferably two initiation points located about 180° apart on the outside surface of the charge, so that when the perforator is detonated the main charge is initiated such that the metal liner is collapsed into a non-circular jet, preferably a fan-shaped jet, that pierces the casing of the wellbore and forms non-circular perforations, preferably slot-shaped perforations, in the surrounding formation.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: August 9, 2005
    Assignee: Molycorp Inc.
    Inventors: Ernest L. Baker, David C. Daniel, David S. Wesson, John L. Burba, III, Arthur S. Daniels, Robert E. Davis
  • APPARATUS AND PROCESS FOR TREATING AN AQUEOUS SOLUTION CONTAINING BIOLOGICAL CONTAMINANTS
    Publication number: 20090107925
    Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes mote than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: CHEVRON U.S.A. INC.
    Inventors: John L. Burba, III, Tim L. Oriard
  • APPARATUS AND PROCESS FOR TREATING AN AQUEOUS SOLUTION CONTAINING BIOLOGICAL CONTAMINANTS
    Publication number: 20110033337
    Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.
    Type: Application
    Filed: June 11, 2010
    Publication date: February 10, 2011
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: John L. Burba, III, Tim L. Oriard
  • APPARATUS AND PROCESS FOR TREATING AN AQUEOUS SOLUTION CONTAINING BIOLOGICAL CONTAMINANTS
    Publication number: 20100255559
    Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.
    Type: Application
    Filed: June 11, 2010
    Publication date: October 7, 2010
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: John L. Burba, III, Tim L. Oriard
  • APPARATUS AND PROCESS FOR TREATING AN AQUEOUS SOLUTION CONTAINING BIOLOGICAL CONTAMINANTS
    Publication number: 20100243542
    Abstract: Process, apparatus and article for treating an aqueous solution containing biological contaminants. The process includes contacting an aqueous solution containing a biological contaminant with an aggregate composition comprising an insoluble rare earth-containing compound to form a solution depleted of active biological contaminants. The aggregate includes more than 10.01% by weight of the insoluble rare earth-containing compound. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. A suitable insoluble cerium-containing compound can be derived from a cerium carbonate, a cerium oxalate or a cerium salt. The composition can consist essentially of cerium oxides, and optionally, a binder and/or flow aid. The aggregate includes no more than two elements selected from the group consisting of yttrium, scandium, and europium when the aggregate is to be sintered.
    Type: Application
    Filed: June 11, 2010
    Publication date: September 30, 2010
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: John L. Burba, III, Tim L. Oriard
  • Viscosity-modifiers for aqueous-based functional products containing mixed metal hydroxides
    Patent number: 5015409
    Abstract: Aqueous-based functional products or corrosive products such as cleansers, household products, commercial products, and personal care products are thickened or viscosity-modified by the addition of at least a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.a) A.sub.a.sup.n.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radial of valence n, where n is 1 or more, (m+2d+3+n.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: May 14, 1991
    Assignee: The Dow Chemical Company
    Inventors: Arthur E. Read, Jr., John L. Burba, III, Peter A. Doty, Clarence R. Crabb
  • Pseudoplastic mixed metal layered hydroxide fluid with fluid loss additive and method of use in penetrating the earth
    Patent number: 5658859
    Abstract: The present invention relates to a pseudoplastic fluid composition including water, a mixed metal layered hydroxide dispersed in the water to impart preselected rheological properties to the fluid and a fluid loss additive composition including one or more of a carboxymethyl substituted vegetable starch, a carboxymethylated cellulosic compound or mixtures thereof in an amount effective to inhibit loss of fluid and with the degree of substitution being selected so that the carboxymethyl substituted compound is soluble in the fluid at the concentration of use without materially adversely affecting the rheological properties of the fluid and so that the fluid is resistant to fermentation. The improved composition includes a crosslinked carboxymethylated vegetable starch which has a degree of substitution in the broad range from about 0.3 to about 0.8 and in a narrower range of about 0.4 to about 0.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: August 19, 1997
    Assignee: Dowell Schlumberger Incorporated
    Inventors: John L. Burba, III, Lindsay J. Fraser
  • Layered mixed metal hydroxides made in non-aqueous media
    Patent number: 5084209
    Abstract: Crystalline layered mixed metal hydroxides (LMMHs) which are substantially free of unbound water and which conform substantially to the general formulaLi.sub.m D.sub.d T(OH).sub.(3+m+d),wherem represents an amount of Li of from 0 to 3,D represents a divalent metal cation, and d represents an amount of D of from 0 to 8.0,T represents a trivalent metal cation, and (3+m+d) represents an amount which substantially satisfies the valence requirements of Li, D and T, andwhere m+d does not equal zero,are prepared, in an organic reaction medium which is essentially free of unbound water, by mixing predetermined metal organo compounds in predetermined ratios and reacting the metal organo compounds with at least one reagent which supplies OH.sup.- ions to replace the beginning anions in the mixture of metal compounds.A preferred LMMH is one which conforms substantially to the generic formula Mg.sub.d Al(OH).sub.(3+d), where d represents the amount of Mg per each unit of Al.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: January 28, 1992
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Steve A. Sims, Thomas M. Knobel
  • HYDROMETALLURGICAL PROCESS AND METHOD FOR RECOVERING METALS
    Publication number: 20150197826
    Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 16, 2015
    Inventor: John L. Burba
  • Hydrometallurgical process and method for recovering metals
    Publication number: 20190136340
    Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.
    Type: Application
    Filed: December 25, 2018
    Publication date: May 9, 2019
    Inventor: John L. Burba, III
  • Hydrometallurgical process and method for recovering metals
    Patent number: 8936770
    Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 20, 2015
    Assignee: Molycorp Minerals, LLC
    Inventor: John L. Burba, III
  • Coating composition comprising solids having reversible stress-induced fluidity
    Patent number: 5418271
    Abstract: Coating formulations which behave as elastic solids having reversible stress-induced fluidity are prepared by creating a fluid having distributed therein effective amounts of ionic charge sites and countercharge sites. For instance, elastic solids having reversible stress-induced fluidity are prepared by combining liquid formulations with a dispersion of a small, but effective, amount of at least one crystalline mixed metal hydroxide conforming substantially to the formulaLi.sub.m D.sub.d T(OH).sub.(m+2d+3+n.multidot.a) (A.sup.n).sub.a .multidot.xH.sub.2 Owhere m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical of valence n and a is the amount of A, where n is 1 or more, (m+2d+3+n.multidot.a) is equal to or greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration, if any.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: May 23, 1995
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Peter A. Doty, Christopher P. Christenson, Susan K. Falcone, Andrea H. Hazlitt, Thomas M. Knobel, Wilfred C. Meyer, Arthur E. Read, Jr., Edgar F. Hoy, Avis L. McCrary, Ha Q. Pham, Stanley F. Simpson, Steve A. Sims, Betty J. Smith
  • Hydrometallurgical process and method for recovering metals
    Patent number: 10179942
    Abstract: A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: January 15, 2019
    Assignee: Secure Natural Resources LLC
    Inventor: John L. Burba, III
  • Remediation of physiologically active compounds from waste water
    Publication number: 20200140290
    Abstract: The present invention is directed to the removal of one or more selected target materials, in particular a physiologically active compound contaminant, from various streams using a rare earth fixing agent.
    Type: Application
    Filed: May 29, 2019
    Publication date: May 7, 2020
    Applicant: Secure Natural Resources LLC
    Inventors: John L. Burba, Charles F. Whitehead, Carl R. Hassler, Robert Cable
  • REMEDIATION OF PHYSIOLOGICALLY ACTIVE COMPOUNDS FROM WASTE WATER
    Publication number: 20110303871
    Abstract: The present invention is directed to the removal of one or more selected target materials, in particular a physiologically active compound contaminant, from various streams using a rare earth fixing agent.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 15, 2011
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: John L. Burba, Charles F. Whitehead, Carl R. Hassler, Robert Cable
  • CERIA FOR USE AS AN ANTIMICROBIAL BARRIER AND DISINFECTANT IN A WOUND DRESSING
    Publication number: 20120328681
    Abstract: The present invention relates to protecting a human from an infection using a disinfecting agent as described herein and a method for use thereof, more particularly to a rare earth-containing device for protecting a wound and a method for use thereof.
    Type: Application
    Filed: September 10, 2012
    Publication date: December 27, 2012
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: Carl R. Hassler, John L. Burba, Charles Whitehead, Joe Pascoe
  • CERIA FOR USE AS AN ANTIMICROBIAL BARRIER AND DISINFECTANT IN A WOUND DRESSING
    Publication number: 20110002971
    Abstract: The present invention relates to protecting a human from an infection using a disinfecting agent as described herein and a method for use thereof, more particularly to a rare earth-containing device for protecting a wound and a method for use thereof.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 6, 2011
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: Carl R. Hassler, John L. Burba, Charles Whitehead, Joe Pascoe
  • Lithium cobalt oxides and methods of making same
    Patent number: 6932922
    Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1?xAxO2+y wherein 0.96?w?1.05, 0?x?0.05, ?0.02?y?0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi?c, wherein xi={right arrow over (S)}i•{right arrow over (P)}c1; yi={right arrow over (S)}i•{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1?xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: August 23, 2005
    Assignee: FMC Corporation
    Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel
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