(under subclass 243) Processes wherein the coating includes openings or holes which are very small, generally microscopic in size.
(1) Note. This subclass provides for producing a vapor permeable coating on a base which is used, for example, to make breathable leatherlike material.
SEE OR SEARCH CLASS
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
9+, for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) 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.
