US PATENT SUBCLASS 588 / 213
.~.~ Heating or vacuum used to drive off or produce a volatile substance (e.g., hydropyrolysis or destructive steam gasification)

Current as of: June, 1999
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588 /   HD   HAZARDOUS OR TOXIC WASTE DESTRUCTION OR CONTAINMENT

205  DF  ORGANIC SUBSTANCE DESTROYED {8}
206  DF  .~ Halogen attached directly to carbon by nonionic bonding {3}
213.~.~ Heating or vacuum used to drive off or produce a volatile substance (e.g., hydropyrolysis or destructive steam gasification) {1}
214  DF  .~.~.~> Using a gaseous heat carrier

DEFINITION

Classification: 588/213

Heating or vacuum used to drive off or produce a volatile substance (e.g., hydropyrolysis or destructive steam gasification):

(under subclass 206) Process wherein the halogenated substance is treated by heating or vacuum for destruction or conversion into an environmentally safe substance.

(1) Note. This subclass includes hydropyrolysis and destructive stream gasification.