Patents by Inventor Irene Tyc

Irene Tyc 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: 5134169
    Abstract: A gold selective ion exchange resin and process for the recovery of gold from solutions thereof is described. The resin has a macroporous structure and functional groups selected from alkylamine groups wherein the alkyl chain has between 3 and 6 carbon atoms, preferably tributylamine groups. The functional group content of the resin is from 0,4 mmol/g to 1,8 mmol/g and the water retention capacity is at least 30%. The process for recovering gold involves adsorption thereof onto such resin, optionally directly from a slurry, and elution preferably using a thiourea solution.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: July 28, 1992
    Assignee: Mintek
    Inventors: Brian R. Green, Irene Tyc, Adriana H. Schwellnus