Patents by Inventor Stefka Todorova Ormsby

Stefka Todorova Ormsby has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
    Publication number: 20130276586
    Abstract: Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.
    Type: Application
    Filed: June 19, 2013
    Publication date: October 24, 2013
    Inventors: Brett T. Waterman, Steve Nels Dixon, Theresa Linne Morelli, George Owusu, Stefka Todorova Ormsby
  • Methods and systems for recovering rhenium from a copper leach
    Patent number: 8491700
    Abstract: Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution. The methods can also incorporate an ion exchange as a rhenium recovery apparatus.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 23, 2013
    Assignee: Freeport-McMoran Corporation
    Inventors: Brett T. Waterman, Steve Nels Dixon, Theresa Linne Morelli, George Owusu, Stefka Todorova Ormsby
  • Methods and systems for recovering rhenium from a copper leach
    Patent number: 8361192
    Abstract: Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: January 29, 2013
    Assignee: Freeport-McMoran Corporation
    Inventors: Brett T. Waterman, Steve Nels Dixon, Theresa Linne Morelli, George Owusu, Stefka Todorova Ormsby
  • METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
    Publication number: 20120304827
    Abstract: Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.
    Type: Application
    Filed: August 17, 2012
    Publication date: December 6, 2012
    Applicant: FREEPORT-MCMORAN CORPORATION
    Inventors: Brett T. Waterman, Steve Nels Dixon, Theresa Linne Morelli, George Owusu, Stefka Todorova Ormsby
  • METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
    Publication number: 20100263490
    Abstract: Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.
    Type: Application
    Filed: April 16, 2009
    Publication date: October 21, 2010
    Applicant: FREEPORT-MCMORAN COPPER & GOLD INC.
    Inventors: Brett T. Waterman, Steve Nels Dixon, Theresa Linne Morelli, George Owusu, Stefka Todorova Ormsby