Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Having specifically intended extraneously added iron group...
Reexamination Certificate
2005-07-05
2005-07-05
Barry, Chester T. (Department: 1724)
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Having specifically intended extraneously added iron group...
C502S414000, C502S415000, C502S428000, C502S429000, C502S437000
Reexamination Certificate
active
06914034
ABSTRACT:
Adsorbents for removing anions of a heavy metals comprise a porous carbon in which at least one oxygen-containing compound of iron, copper, and/or aluminum is incorporated. The oxygen-containing compound may be incorporated into the porous carbon by impregnation or dispersion of a suitable precursor of such a compound. The precursor may be further treated to yield the oxygen-containing compound. Such adsorbents are particularly useful for removing arsenic and/or selenium from the environment and may be used in treating drinking water sources.
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Barry Chester T.
Calgon Carbon Corporation
Cohen & Grigsby P.C.
Trebilcock, Esq. Christine W.
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