DIFF Subgroup
C02F 11/143 using inorganic substances (C02F11/148 takes precedence)
Introduced: January 2019
Title
Titles differ between systems:
IPC: using inorganic substances
CPC: using inorganic substances (C02F11/148 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Treatment of sludge; Devices therefor > by de-watering, drying or thickening > with addition of chemical agents > using inorganic substances
CPC:
Treatment of sludge; Devices therefor > by de-watering, drying or thickening > with addition of chemical agents > using inorganic substances (C02F11/148 takes precedence)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 2019.
Child Classifications
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