US PATENT SUBCLASS 422 / 171
.~.~.~.~ Solid, extended surface, fluid contact type

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}
169  DF  .~.~ Including means providing sequential purification stages {1}
170  DF  .~.~.~ Plural chemical reaction stages {2}
171.~.~.~.~ Solid, extended surface, fluid contact type

DEFINITION

Classification: 422/171

Solid, extended surface, fluid contact type:

(under subclass 170) Apparatus wherein the reaction stages contain solid extended surface fluid contact reaction means (i.e., means providing a relatively large solid fluid contact surface area within the reaction zone).