Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2007-10-16
2007-10-16
Smith, Duane (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S679000, C210S681000, C210S683000, C210S684000, C210S911000
Reexamination Certificate
active
11058129
ABSTRACT:
A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Kspno greater than 10−5, provided that the metal is not zirconium.
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Barrett James Henry
Trejo Jose Antonio
Clemente Robert A
Crimaldi Kenneth
Rohm and Haas Company
Smith Duane
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