(under subclass 600) Subject matter wherein a constituent of a gas mixture is extracted(e.g. by liquefaction or solidification).
SEE OR SEARCH CLASS
95, Gas Separation: Processes,
39+, 149+, 257, and 290 for processes of gas separation in which a gas may be liquified, but not involving a refrigeration operation.
96, Gas Separation: Apparatus, for gas separation apparatus provided with heating or cooling means.
203, Distillation: Processes, Separatory, appropriate subclass for a separatory distillation process where the product produced by condensation is normally a liquid.
423, Chemistry of Inorganic Compounds,
210+, for processes of purifying or separating components of normally gaseous mixtures involving a chemical reaction.
