US PATENT SUBCLASS 588 / 216
.~.~ 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

205  DF  ORGANIC SUBSTANCE DESTROYED {8}
215  DF  .~ Chalcogen containing (O, S, Se, or Te) {2}
216.~.~ Heating or vacuum used to drive off or produce a volatile substance {1}
217  DF  .~.~.~> Using a gaseous heat carrier

DEFINITION

Classification: 588/216

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

(under subclass 215) Process wherein heating or vacuum is used to drive off or produce a volatile environmentally safe substance.