US PATENT SUBCLASS 588 / 253
.~.~ In situ vitrification


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

249  DF  CONTAINMENT {6}
252  DF  .~ Solidification, vitrification, or cementation {4}
253.~.~ In situ vitrification


DEFINITION

Classification: 588/253

In situ vitrification:

(under subclass 252) Processes whereby the melting or sintering to form a glass or glass like substance is done underground.

(1) Note. Included herein is any process that produces the necessary conditions for the melting or sintering of a substance to form a glassy mass under the surface of the earth.

SEE OR SEARCH CLASS

405, Hydraulic and Earth Engineering,

258+, for earth treatment or control.