US PATENT SUBCLASS 203 / 29
.~ Including step of adding catalyst or reacting material

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

28  DF  WITH CHEMICAL REACTION {1}
29.~ Including step of adding catalyst or reacting material {7}
30  DF  .~.~> For polymerizing unwanted component
31  DF  .~.~> Oxidizing material
32  DF  .~.~> Reducing material
33  DF  .~.~> Inorganic salt containing oxygen in the anion
34  DF  .~.~> Acid {1}
36  DF  .~.~> Alkaline oxide or hydroxide {1}
38  DF  .~.~> Organic material

DEFINITION

Classification: 203/29

(under subclass 28) Processes, directed to adding a catalyst or a material which reacts with a component of the mixture to assist the separation of the desired component in the

original mixture.

(1) Note. A chemical reaction for purposes of this and indented subclasses includes such reactions as (1) forming hydrates, (2) adjusting of hydrogen ion concentration, (3) polymerizing a component, (4) oxidizing or reducing a component or the addition to the mixture being acted upon of an oxidizing or reducing agent, and (5) the forming of different substances.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50+, for adding a substance to alter the relative volatility of components of the incoming feed without specifically producing a new chemical compound.