US PATENT SUBCLASS 588 / 235
.~.~ Using a gaseous heat carrier

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  DF  .~ Heating or vacuum used to drive off or produce a volatile substance {1}
235.~.~ Using a gaseous heat carrier

DEFINITION

Classification: 588/235

Using a gaseous heat carrier:

(under subclass 234) Process wherein a gaseous heat carrier is used in the hazardous or toxic waste treating process to either capture, recycle, or add external heat to the process.