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PCE
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DIFF Subgroup
C01B 13/16

Purification

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general > Purification

CPC:

Oxygen; Ozone; Oxides or hydroxides in general > Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group) > Purification

No child classifications to compare. This is a leaf node in both IPC and CPC.