US PATENT SUBCLASS 203 / 37
.~.~.~ Alkali metal hydroxide

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

28  DF  WITH CHEMICAL REACTION {1}
29  DF  .~ Including step of adding catalyst or reacting material {7}
36  DF  .~.~ Alkaline oxide or hydroxide {1}
37.~.~.~ Alkali metal hydroxide

DEFINITION

Classification: 203/37

(under subclass 36) Processes, in which the material is an alkali metal hydroxide.