Patents Assigned to Redox Solutions, LLC
  • Methods of treatment of chromite ore processing residue
    Patent number: 8192705
    Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: June 5, 2012
    Assignee: Redox Solutions, LLC
    Inventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
  • Methods of Treatment of Chromite Ore Processing Residue
    Publication number: 20100286464
    Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
    Type: Application
    Filed: July 22, 2010
    Publication date: November 11, 2010
    Applicant: REDOX SOLUTIONS, LLC
    Inventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
  • Methods of Treatment of Chromite Ore Processing Residue
    Publication number: 20100087697
    Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer, contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
    Type: Application
    Filed: December 10, 2009
    Publication date: April 8, 2010
    Applicant: REDOX SOLUTIONS, LLC
    Inventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
  • Methods of treatment of chromite ore processing residue
    Patent number: 7670576
    Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: March 2, 2010
    Assignee: Redox Solutions, LLC
    Inventors: Steven A. Chisick, Timothy Clark Heffernan, Thomas P. McCullough, Gary Joel Meyer
  • Methods of Treatment of Chromite Ore Processing Residue
    Publication number: 20070224097
    Abstract: Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or chemical reducer; permitting the chromite processing wastes to react with the oxygen scavenger or chemical reducer; contacting the chromite processing wastes with ferrous ion; contacting the chromite processing wastes with sulfide ion; and, contacting the chromite processing wastes with ferrous sulfide.
    Type: Application
    Filed: September 7, 2005
    Publication date: September 27, 2007
    Applicant: REDOX SOLUTIONS, LLC.
    Inventors: Steven Chisick, Timothy Heffernan, Thomas McCullough, Gary Meyer