Patents Represented by Law Firm Drummond & Nelson
  • Ion exchange separation method
    Patent number: 4269716
    Abstract: An improved ion exchange separation method in which the volume of spent wash liquid and treated feed liquid is reduced by withdrawing a slurry of regenerated resin and wash water from the regeneration column and introducing the slurry into the bottom of the main treating column. The wash liquid is withdrawn from the main treating column along with the de-ionized feed liquid.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: May 26, 1981
    Assignee: Advanced Systems, Inc.
    Inventor: Marshall I. Gurian