Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2005-06-21
2005-06-21
Popovics, Robert James (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S767000, C210S805000, C210S806000, C210S252000, C210S258000, C210S259000, C210S282000, C210S287000, C210S502100, C101S425000, C101S483000, C101S450100
Reexamination Certificate
active
06908558
ABSTRACT:
A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a posttreatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post-treatment filter preferably comprises a zeolite filter.
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English language Abstract of JP 2001260310 A; Copyright 2001—Japanese Patent Office.
Douglas David A.
Seibert Roy E.
Stinson David J.
Villarreal Jose A.
O'Neil Michael A.
Popovics Robert James
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