Patents by Inventor Elyse Benguerel

Elyse Benguerel 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).

  • Patent number: 5201942
    Abstract: Rhodium is recovered from an aqueous precious metal solution by first contacting the solution with stannous chloride at a Sn:Rh molar ratio of at least 2:1 to produce activated Rh solution; solvent extracting rhodium from the activated solution with an organic extractant to produce an organic phase containing Rh; the Rh can be recovered from the organic phases by burning-off the organic, precipitating Rh by reduction or stripping with a stripping agent and recovering Rh from an Rh-loaded stripping agent; the method produces high yields of Rh in short periods as compared with time consuming prior procedures.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: April 13, 1993
    Assignee: McGill University
    Inventors: George P. Demopoulos, Elyse Benguerel, Garfield B. Harris