US PATENT SUBCLASS 203 / 20
INCLUDING DEFOAMING OR INHIBITING FOAM


Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

20INCLUDING DEFOAMING OR INHIBITING FOAM


DEFINITION

Classification: 203/20

(under the class definition) Processes directed to defoaming or inhibiting the formation of foam.

SEE OR SEARCH CLASS

95, Gas Separation: Processes,

155, for processes of gas separation involving liquid contacting and the use of a defoaming or antifoaming agent; subclass 157 for processes of gas separation involving liquid contacting and defoaming the liquid; and subclass 242 for defoaming a liquid, per se.

137, Fluid Handling,

107.1+, for apparatus for controlling the degree of foaming in a gas charged liquid.

201, Distillation: Processes, Thermolytic, 9, for a process of surface treating the solid particles of the charge to inhibit, reduce or prevent foaming during

distillation.

202, Distillation: Apparatus,

264, for distillation apparatus intended to break foam or inhibit foaming.

435, Chemistry: Molecular Biology and Microbiology,

266, for a fermentation process including the step of treating the foam produced.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

115+, for processes of or compositions for or subcombination compositions for the breaking of or inhibiting of foam colloid systems, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.