Patents by Inventor Alexander E. Jenkins

Alexander E. Jenkins 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).

  • Recovery of precious metals and copper from copper/gold ores using resin technology
    Publication number: 20030200839
    Abstract: A process for the selective recovery of precious metals from a medium loaded with precious metals and base metals. The selective recovery of precious metals is achieved by exposing the medium to an aqueous solution containing a complex of formula MX2—, wherein M is a metal of group IB or IIB of the Periodic Table of Elements, and X is a monovalent radical. A second invention relates to the removal of copper from the medium whereby elution of copper is achieved by exposing the medium to an aqueous solution capable of oxidising Cu(I) to Cu(II) whilst not eluting precious metals from the medium.
    Type: Application
    Filed: March 11, 2003
    Publication date: October 30, 2003
    Inventors: Alexander E. Jenkins, Tam Tran