(under subclass 340) Processes in which the treatment results in the removal of a material which is held or retained in or on the solid workpiece.
SEE OR SEARCH THIS CLASS, SUBCLASS:
49, for removing solid bodies from a shaped body to form pores.
233, for washing of a product in combination as a subsequent disparate treatment.
SEE OR SEARCH CLASS
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, particularly 137+, for cleaning or laundering, per se, of textiles and fibers.
34, Drying and Gas or Vapor Contact With Solids, appropriate subclasses for separation of liquids from solids by drying.
134, Cleaning and Liquid Contact With Solids, appropriate subclasses for cleaning or separation of impurities from solid bodies.
