Patents by Inventor Ryszard Gajek

Ryszard Gajek 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).

  • Separation Systems with Charge Mosaic Membrane
    Publication number: 20070261962
    Abstract: An ion is eluted from an ion exchange resin in a separation system using an eluent generated by electrolysis of a medium. Elution is further assisted by an electrical field between two electrodes, wherein the ion exchange resin is at least partially disposed between the electrodes. Particularly preferred aspects of such separation systems include gradient separation (Membrane Dynamically Scanned Electrophoresis—MDSE) and buffered electrodialysis (Dynamically Buffered Electrodialysis—DBE).
    Type: Application
    Filed: June 27, 2007
    Publication date: November 15, 2007
    Inventor: Ryszard Gajek
  • Separation systems with charge mosaic membrane
    Publication number: 20050167271
    Abstract: An ion is eluted from an ion exchange resin (132) in a separation system (100) using an eluent generated by electrolysis of a medium. Elution is further assisted by an electrical field between two electrodes (120, 110), wherein the ion exchange resin (132) is at least partially disposed between the electrodes. Particularly preferred aspects of such separation systems include gradient separation and buffered electrodialysis.
    Type: Application
    Filed: April 2, 2002
    Publication date: August 4, 2005
    Inventor: Ryszard Gajek
  • Modified membrane suppressor and method for use
    Patent number: 4999098
    Abstract: A suppressor for use in ion chromatography including at least an effluent flow channel separated by a charged membrane from a suppressor flow channel. A screen of the same charge as the membrane is placed in at least the effluent flow channel. Preferably, a similar screen is placed in the regenerant flow channel. The screen increases the dynamic capacity of the membrane suppressor.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: March 12, 1991
    Assignee: Dionex Corporation
    Inventors: Christopher Pohl, Roseanne W. Slingsby, John R. Stillian, Ryszard Gajek