Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2005-04-19
2005-04-19
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S683000, C210S714000, C210S728000, C210S747300, C210S764000, C210S906000, C252S176000, C252S181000, C504S152000
Reexamination Certificate
active
06881346
ABSTRACT:
Compositions including alum, a smectite material and optionally one or more of a buffer and an algaecide coating or additives for the clarification of bodies of water by removal of dissolved solids, dissolved organic materials and other anions such as fluoride and chloride as well as the removal of total phosphorus from such bodies of water. The compositions are designed to be delivered to concentrated or impounded phosphorus located at the bottom of various bodies of water and may be produced in various physical forms.
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Abstract No. JP 54041924 A dated Apr. 3, 1979, entitled Lightweight Inorganic Aggregate Made by Thermal Foaming—from Alum, Slaked Lime, Alkali Borate, Phosphate or Aluminum Hydroxide Added to Siliceous Material, Bentonite and Alkali Silicate.
Gray Steven R.
Landis Charles R.
Halliburton Energy Service,s Inc.
Haynes And Boone, LLP
Hruskoci Peter A.
Roddy Craig W.
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