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PCE
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DIFF Subgroup
B01J 23/90

Regeneration or reactivation

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Catalysts comprising metals or metal oxides or hydroxides, not provided for in group > Regeneration or reactivation

CPC:

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

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.

Child Classifications

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  • B01J 23/92 of catalysts comprising metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 since 1974 IPC+CPC Available in IPC and CPC
  • B01J 23/94 of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper since 1974 IPC+CPC Available in IPC and CPC
  • B01J 23/96 of catalysts comprising metals, oxides or hydroxides of the noble metals since 1974 IPC+CPC Available in IPC and CPC