Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2011-03-29
2011-03-29
Barry, Chester T (Department: 1776)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S670000, C210S681000, C210S691000
Reexamination Certificate
active
07914682
ABSTRACT:
A method of removing impurities from a urea solution comprising contacting the aqueous solution with an ion exchange resin and adsorbing the impurities from the urea solution, and the system therefore.
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Barry Chester T
Colonial Chemical Company
Stradley Ronon Stevens & Young LLP
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