(under subclass 15) Processes in which the fluid applied to the material comprises a gas or vapor.
(1) Note. See Suspensions and Colloids under the Class Definition of this class for a statement relative to related art and the lines with other classes as to the formation of suspension or colloids by comminution.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38+, for apparatus including means for applying gas or vapor to the material.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids, and the notes thereto, for processes and apparatus for applying gas or vapor to solid material.
