(under subclass 39) Processes, directed to separating a solid material from a product of the distillation step.
SEE OR SEARCH CLASS
210, Liquid Purification or Separation,
600+, for a process of separating a solid from a liquid, especially subclasses 702+ for an accretion or precipitation process; and subclasses 767+ for a skimming, settling, or filtration process.
