DIFF Subgroup
C01F 7/46 Purification of aluminium oxide, aluminium hydroxide or aluminates (C01F7/028 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Purification of aluminium oxide, aluminium hydroxide or aluminates
CPC: Purification of aluminium oxide, aluminium hydroxide or aluminates (C01F7/028 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Purification of aluminium oxide, aluminium hydroxide or aluminates
CPC:
Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Purification of aluminium oxide, aluminium hydroxide or aluminates (C01F7/028 takes precedence)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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- C01F 7/47 of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors since 1990 IPC+CPC Available in IPC and CPC