US PATENT SUBCLASS 422 / 178
.~.~.~ And contact regenerating means or means for cleaning an internal surface of the reaction chamber

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

129  DF  CHEMICAL REACTOR {28}
168  DF  .~ Waste gas purifier {5}
177  DF  .~.~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. {4}
178.~.~.~ And contact regenerating means or means for cleaning an internal surface of the reaction chamber

DEFINITION

Classification: 422/178

And contact regenerating means or means for cleaning an internal surface of the reaction chamber:

(under subclass 177) Apparatus having either (a) means for renewing the spent extended surface contact means or (b) means for cleaning an internal surface of the reaction chamber.