US PATENT SUBCLASS 203 / 28
WITH CHEMICAL REACTION


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

28WITH CHEMICAL REACTION {1}
29  DF  .~> Including step of adding catalyst or reacting material {7}


DEFINITION

Classification: 203/28

(under the class definition) Processes including the step of producing a chemical reaction of a component of the mixture being separated to facilitate separation of the desired substance in the original mixture.

(1) Note. To come within the purview of this and indented subclasses a chemical change must occur which facilitates the recovery without chemical change of the desired substance which was present in the original mixture.

SEE OR SEARCH CLASS

208, Mineral Oils: Processes and Products,

46+, for a process of treating mineral oil which results in a chemical alteration of at least some of the hydrocarbon molecules thereof.

546, Organic Compounds,

134+, for a general process of chemically treating a carbon compound not otherwise provided for. 588, Hazardous or Toxic Waste Destruction or Containment, appropriate subclasses for the use of a chemical reaction with distillation as part of a process of the destruction of hazardous or toxic waste.