US PATENT SUBCLASS 210 / 636
.~.~ Including cleaning or sterilizing of apparatus

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

600  DF  PROCESSES {14}
634  DF  .~ Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process {11}
636.~.~ Including cleaning or sterilizing of apparatus

DEFINITION

Classification: 210/636

Including cleaning or sterilizing of apparatus:

(under subclass 634) Process which includes a positive step of either removing accumulated undesired material from the apparatus or destroying a pathogenic micro-organism.

(1) Note. The continuous removal of a more concentrated feed stream apart from the processed effluent is not considered cleaning for purposes of this class.

(2) Note. An example of undesired material may be a buildup of retentate on the upstream side of a membrane serving to pass desired constituents.