Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Reexamination Certificate
2007-04-10
2007-04-10
Anthony, Joseph D. (Department: 1714)
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
C252S187280, C252S187290, C252S186210, C252S179000, C210S722000, C210S723000, C210S764000, C210S756000
Reexamination Certificate
active
10769226
ABSTRACT:
Compositions, methods and kits for purifying and clarifying and/or nutrifying contaminated drinking water and which comprise a primary coagulant material, a microbiocidal disinfectant and an oxidant system. Highly preferred compositions also contain one or more of a bridging flocculent material, the levels and ratios of coagulant to flocculent preferably falling within certain ranges, a cationic coagulant aid, especially chitosan, a water-soluble alkali, a water-insoluble silicate, and a food additive or nutrient source. The purified water remains free of discoloration for extended periods of storage.
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Cruickshank Graeme Duncan
Souter Philip Frank
Stoddart Barry
Anthony Joseph D.
Dinsmore & Shohl LLP Attorneys
McDow Kelly L.
Pur Water Purification Products, Inc.
Ulrich Paul M.
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