by de-watering, drying or thickening

Introduced: January 1980

Full Title

Treatment of sludge; Devices therefor > by de-watering, drying or thickening

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

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C02F 11/121 by mechanical de-watering since 2019 IPC+CPC Available in IPC and CPC
C02F 11/13 by heating since 2019 IPC+CPC Available in IPC and CPC
C02F 11/14 with addition of chemical agents since 1980 IPC+CPC Available in IPC and CPC
C02F 11/15 by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves (for the purpose of heating C02F11/131) since 2019 IPC+CPC Available in IPC and CPC
C02F 11/16 using drying or composting beds since 1980 IPC+CPC Available in IPC and CPC