of noble metals

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Catalysts comprising metals or metal oxides or hydroxides, not provided for in group > of noble metals

CPC:

Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 (B01J21/16 takes precedence) > of noble metals

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

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B01J 23/40 of the platinum group metals since 1974 IPC+CPC Available in IPC and CPC
B01J 23/48 Silver or gold since 1974 IPC+CPC Available in IPC and CPC
B01J 23/54 combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 since 1974 IPC+CPC Available in IPC and CPC