US PATENT SUBCLASS 210 / 631
.~.~ And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.)

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

600  DF  PROCESSES {14}
601  DF  .~ Treatment by living organism {13}
631.~.~ And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.)

DEFINITION

Classification: 210/631

And additional treating agent other than mere mechanical manipulation (e.g., chemical, sorption, etc.):

(under subclass 601) Process including a step of treating with an additional agent (e.g., chemical).

SEE OR SEARCH THIS CLASS, SUBCLASS:

606, for a process wherein the additional agent is an enzyme.

632, for a process of using an enzyme without a living organism.

749+, for a chemical treatment process.