US PATENT SUBCLASS 588 / 240
.~ 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

238  DF  CHALCOGEN CONTAINING SUBSTANCE DESTROYED (O, S, Se, or Te) {3}
240.~ Heating or vacuum used to drive off or produce a volatile substance {1}
241  DF  .~.~> Using a gaseous heat carrier

DEFINITION

Classification: 588/240

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

(under subclass 238) Process wherein the chalcogen (O, S, Se, or Te) containing substance is treated by heating or vacuum for destruction or conversion into an environmentally safe substance.