FI (Note)/(Index) list

Descriptions for C02F and notes/indexes are displayed on this screen.

C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances A62D 3/00; separation, settling tanks or filter devices B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e g  for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F 9/04)[3]

Note(s)
    When classifying in this subclass, classification is also made in group B01D 15/08 insofar as subject matter of general interest relating to chromatography is concerned [7,8]In this subclass, it is desirable to add the indexing codes of groups C02F 101/00 or C02F 103/00 

Subclass indexes

CHEMICAL OR PHYSICAL TREATMENT

1/00, 5/00

BIOLOGICAL TREATMENT

3/00

AERATION OF STRETCHES

7/00

MULTISTAGE TREATMENT

9/00

TREATMENT OF SLUDGE

11/00