(under subclass 60) Compositions for use in separating components of mixtures by froth-flotations or in each case by selective or differential adherence of the composition, or agent containing the same, with respect to two or more of the components of the mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, 6.5, 7, and 8.05, for foams, foamable liquids, and foam stabilizing or producing agents.
88, for selective or differential particle-adherent compositions.
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids,
5, 45+, and 163+ for processes or apparatus employing such agents. 210, Liquid Purification or Separation,
703+, for processes of precipitation involving flotation, and subclasses 198.1+ particularly subclasses 220+ for separators having means to add a treating material.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
10+, for foam colloid systems or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.
