US PATENT SUBCLASS 588 / 234
.~ Heating or vacuum used to drive off or produce a volatile substance

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

231  DF  HEAVY METAL CONTAINING SUBSTANCE DESTROYED {4}
234.~ Heating or vacuum used to drive off or produce a volatile substance {1}
235  DF  .~.~> Using a gaseous heat carrier

DEFINITION

Classification: 588/234

Heating or vacuum used to drive off or produce a volatile substance:

(under subclass 231) Process wherein the hazardous or toxic waste is destroyed by heating or vacuum to drive off or produce a volatile environmentally safe substance.