(under subclass 228) Apparatus in which the separating apparatus includes a separating media that is a foraminous or porous mass which separates solid or liquid particles from the gaseous fluid mixture by entrapment and retention while
permitting gaseous or vaporous constituents to pass through.
SEE OR SEARCH CLASS
95, Gas Separation: Processes,
276, and 281 for processes of gas separation using a filter with cleaning of the filter by use of a liquid.