(under subclass 232) Processes wherein said treatment is a liquid cleansing step which removes impurities by a physical or solvent action of said liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
49, for the dissolving out of solids to form a porous product.
344, for, per se, removal of material which is occluded, adsorbed on or dissolved in an article.
SEE OR SEARCH CLASS
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, 147+, for fluid treatment of artificial fibers, e.g., working, per se.
134, Cleaning and Liquid Contact With Solids, appropriate subclasses as the generic home for cleaning processes.
