US PATENT SUBCLASS 210 / 764
.~.~ Destroying microorganisms


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

600  DF  PROCESSES {14}
749  DF  .~ Chemical treatment {8}
764.~.~ Destroying microorganisms


DEFINITION

Classification: 210/764

Destroying micro-organisms:

(under subclass 749) Process in which a living organism is killed or is prevented from normal propagation by the addition of a chemical agent.

(1) Note. The process involving the mere addition of a biocidal algicidal compound or composition with no significant or additional water treatment is classified in Class 424 or Class 504.

SEE OR SEARCH THIS CLASS, SUBCLASS:

753+, for a process including treatment with a halogen containing a compound.

758+, for a process comprising oxidizing.

SEE OR SEARCH CLASS

424, Drug, Bio-Affecting and Body Treating Compositions, appropriate subclass for a biocidal, e.g., bactericide, fungicide, etc., composition. See (1) Note.

426, Food or Edible Material: Processes, Compositions, and Products, appropriate subclasses for preservation of foods by destruction of micro-organism. 504, Plant Protecting and Regulating Compositions,

150+, for algicidal compositions. See (1) Note.