Search Patents
  • Antimicrobial positively charged particles
    Patent number: 5154932
    Abstract: Formulations or products are caused to be active antimicrobials by the addition thereto of at least one effective amount of at least one crystalline mixed metal hydroxide (MMOH) conforming substantially to the formulaLi.sub.m D.sub.d T(OH) (m+2d+3+na) (A.sup.n).sub.a.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, (m+2d+3+na) is equal or to greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration. The MMOH forms an adduct with, an coats, the microbes, thereby deactivating the microbes.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: October 13, 1992
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, John L. Alexander, Arthur E. Read, Jr., Wilfred W. Wilson
  • Selective extraction of cobalt from ores
    Patent number: 4464348
    Abstract: Cobalt values are extracted from Co-containing ores or minerals by using an aqueous solution containing a reducing agent (e.g., hydrazine hydrosulfate). The leachant substantially rejects nickel values, thus cobalt is extracted which is substantially free of nickel.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: August 7, 1984
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Higher density ion exchange resins of metal compound precipitated within pores
    Patent number: 4477597
    Abstract: Macroporous ion exchange resins having increased apparent density are provided by incorporating into said resins a weighting agent which is of greater apparent density than the resin itself. Such weighted resins exhibit reduced bed expansion when used with upflow streams, with relatively dense liquids, and with relatively viscous liquids.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: October 16, 1984
    Assignee: The Dow Chemical Company
    Inventors: John M. Lee, William C. Bauman, Richard A. Wolcott, John L. Burba, III
  • Lithium aluminates for separating hydrocarbons
    Patent number: 4430097
    Abstract: Particles of crystalline LiX.multidot.2Al(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in separating hydrocarbons according to boiling point ranges.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Co.
    Inventor: John L. Burba, III
  • Lithium aluminates for gas chromatograph columns
    Patent number: 4321065
    Abstract: Particles of crystalline LiX.multidot.2A1(OH).sub.3 .multidot.nH.sub.2 O, where X is a monovalent, divalent, or trivalent anion, especially chlorine, are useful in gas chromatography in separating hydrocarbons according to boiling point ranges.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: March 23, 1982
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Crystalline lithium aluminates
    Patent number: 4348296
    Abstract: Porous substrates containing seeds of hydrous crystalline alumina are contacted with an aqueous solution of alkaline aluminate, thereby causing additional crystalline hydrous alumina to grow on the seeds within the pores of the substrate.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: September 7, 1982
    Assignee: The Dow Chemical Company
    Inventors: William C. Bauman, John M. Lee, John L. Burba, III
  • Lithium cobalt oxides and methods of making same
    Publication number: 20030205700
    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.
    Type: Application
    Filed: April 25, 2003
    Publication date: November 6, 2003
    Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, John F. Engel
  • Regeneration of crystalline lithium aluminates
    Patent number: 4472362
    Abstract: Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li.sup.+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about 800 ppm Li.sup.+ ion.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: September 18, 1984
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Processes producing methyl mercaptan
    Patent number: 5481042
    Abstract: Described are preferred processes which produce methyl mercaptan from methyl bromide and aqueous mediums of metal hydrosulfide. The processes can be used to simultaneously consume methyl bromide byproduct and aqueous NaSH byproduct while producing methyl mercaptan.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: January 2, 1996
    Assignee: Great Lakes Chemical Corp.
    Inventors: John L. Burba, III, James T. Ayres, Preston E. Spires, John E. Hill
  • METHODS AND DEVICES FOR ENHANCING CONTAMINANT REMOVAL BY RARE EARTHS
    Publication number: 20110309017
    Abstract: Embodiments are provided for removing a variety of contaminants using both rare earth and non-rare earth-containing treatment elements.
    Type: Application
    Filed: April 13, 2011
    Publication date: December 22, 2011
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: Carl R. Hassler, John L. Burba, III, Charles F. Whitehead, Joseph Lupo, Timothy L. Oriard
  • AGGLOMERATION OF HIGH SURFACE AREA RARE EARTHS
    Publication number: 20120031827
    Abstract: The subject invention relates generally to friable metal oxide agglomerates and specifically to agglomerates containing high surface area rare earth-containing materials and a polymeric binder.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 9, 2012
    Applicant: MOLYCORP MINERALS, LLC
    Inventors: John L. Burba, Carl R. Hassler, Charles F. Whitehead, Joseph A. Lupo, John Lahlouh, Chris Vogdes, Brandt Wright
  • Sorbent for Lithium Extraction
    Publication number: 20140239224
    Abstract: This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 25% by weight of a polymer to form the LAI matrix.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: Simbol Inc.
    Inventors: John L. Burba, Ray F. Stewart, Brian E. Viani, Stephen Harrison, Christine ellen Vogdes, John Galil Salim Lahlouh
  • Sorbent for lithium extraction
    Patent number: 8753594
    Abstract: This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 20% by weight of a polymer to form the LAI matrix.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: June 17, 2014
    Assignee: Simbol, Inc.
    Inventors: John L. Burba, III, Ray F. Stewart, Brian E. Viani, Stephen Harrison, Christine Ellen Vogdes, John Galil Salim Lahlouh
  • Lithium metal dispersion in secondary battery anodes
    Publication number: 20040002005
    Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The anodes of the invention are combined with a cathode including an active material, a separator that a separates the cathode and the anode, and an electrolyte in communication with the cathode and the anode. The present invention also includes a method of preparing an anode and a method of operating a secondary battery including the anode of the invention.
    Type: Application
    Filed: December 20, 2002
    Publication date: January 1, 2004
    Inventors: Yuan Gao, John L. Burba, John F. Engel, Marina V. Yakovleva
  • Lithium metal dispersion in secondary battery anodes
    Patent number: 8980477
    Abstract: The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The anodes of the invention are combined with a cathode including an active material, a separator that a separates the cathode and the anode, and an electrolyte in communication with the cathode and the anode. The present invention also includes a method of preparing an anode and a method of operating a secondary battery including the anode of the invention.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: March 17, 2015
    Assignee: FMC Corporation
    Inventors: Yuan Gao, John L. Burba, III, John F. Engel, Marina V. Yakovleva
  • Mixed metal hydroxide containing a dispersant
    Patent number: 5094778
    Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.J.sup.n where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: March 10, 1992
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Audrey L. Barnes
  • Mixed metal hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
    Patent number: 4790954
    Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: December 13, 1988
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Audrey L. Barnes
  • Mixed metal layered hydroxide hydrophilic organic material as thickeners for water and other hydrophylic fluids
    Patent number: 5308547
    Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: May 3, 1994
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Audrey L. Barnes
  • Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
    Patent number: 4664843
    Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: May 12, 1987
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Audrey L. Barnes
  • Mixed metal hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
    Patent number: 5196143
    Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sup.n.sub.a.H.sub.2 O, where x is zero or more representing excess water of hydration, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 23, 1993
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, Audrey L. Barnes
Narrow Results

Filter by US Classification