US PATENT SUBCLASS 210 / 793
.~.~.~.~ Reverse flow

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
767  DF  .~ Separating {16}
791  DF  .~.~ Rehabilitating or regenerating filter medium {2}
792  DF  .~.~.~ Particulate bed {2}
793.~.~.~.~ Reverse flow {1}
794  DF  .~.~.~.~.~> Including addition of diverse fluid {1}

DEFINITION

Classification: 210/793

Reverse flow:

(under subclass 792) Process in which a cleaning fluid passes through the particulate bed oppositely to the direction of flow during filtration.