(under the class definition) Subject matter wherein the composition contains a material whose presence permits the detection of the composition prior to, or after use or the source of supply or manufacturing.
SEE OR SEARCH CLASS
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
9+, for colloid systems of continuous liquid phase (e.g., suspensions, emulsions, dispersions), subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates); or agents for such systems or making or stabilizing such systems or agents; in each case, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.
