Patents by Inventor Gordon Rossiter

Gordon Rossiter 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).

  • Ionic impurities rejection and chromatographic purification using ion exchange
    Patent number: 8293115
    Abstract: The invention covers the combination of utilizing the selectivity of an adsorbent to remove species from a liquid containing mixtures of ions and then subjecting the loaded resin to a chromatographic displacement utilizing the most selectively adsorbed species to displace the undesired co-adsorbing impurities. The technique can be used even when the most selectively adsorbed species is present as a minor constituent in the feed solution.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: October 23, 2012
    Inventor: Gordon Rossiter
  • IONIC IMPURITIES REJECTION AND CHROMATOGRAPHIC PURIFICATION USING ION EXCHANGE
    Publication number: 20120189513
    Abstract: The invention covers the combination of utilizing the selectivity of an adsorbent to remove species from a liquid containing mixtures of ions and then subjecting the loaded resin to a chromatographic displacement utilizing the most selectively adsorbed species to displace the undesired co-adsorbing impurities. The technique can be used even when the most selectively adsorbed species is present as a minor constituent in the feed solution.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 26, 2012
    Inventor: Gordon Rossiter
  • IONIC IMPURITIES REJECTION AND CHROMATOGRAPHIC PURIFICATION USING ION EXCHANGE
    Publication number: 20120189514
    Abstract: The invention covers the combination of utilizing the selectivity of an adsorbent to remove species from a liquid containing mixtures of ions and then subjecting the loaded resin to a chromatographic displacement utilizing the most selectively adsorbed species to displace the undesired co-adsorbing impurities. The technique can be used even when the most selectively adsorbed species is present as a minor constituent in the feed solution.
    Type: Application
    Filed: December 23, 2011
    Publication date: July 26, 2012
    Inventor: Gordon Rossiter
  • Process for engineered ion exchange recovery of copper and nickel
    Patent number: 7594951
    Abstract: A method for extracting and concentrating copper values from copper-I leach liquors that are economically non-viable using conventional SX-EW or known conventional configurations of IX. The novel process scheme is compatible and advantageous for use with a multi-port valve CIX system, a suitable membrane separation system and a selective scrubbing technique to control iron.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: September 29, 2009
    Inventor: Gordon Rossiter
  • Process for engineered ion exchange recovery of copper and nickel
    Publication number: 20070125198
    Abstract: A method for extracting and concentrating copper values from copper-I leach liquors that are economically non-viable using conventional SX-EW or known conventional configurations of IX. The novel process scheme is compatible and advantageous for use with a multi-port valve CIX system, a suitable membrane separation system and a selective scrubbing technique to control iron.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 7, 2007
    Inventor: Gordon Rossiter