by flocculation or precipitation of suspended impurities

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Treatment of water, waste water, or sewage > by flocculation or precipitation of suspended impurities

CPC:

Treatment of water, waste water, or sewage (C02F3/00 - C02F9/00 take precedence) > by flocculation or precipitation of suspended impurities

CPC subdivides this area 9x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

IPC defines codes here since 1980.

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C02F 1/5209 CPC only CPC only
C02F 1/5227 CPC only CPC only
C02F 1/5236 +2 CPC CPC only CPC only
C02F 1/5263 CPC only CPC only
C02F 1/5272 CPC only CPC only
C02F 1/5281 CPC only CPC only
C02F 1/529 CPC only CPC only
C02F 1/54 using organic material since 1980 +3 CPC IPC+CPC Available in IPC and CPC
C02F 2001/5218 2nd only CPC only CPC only