Regeneration or reactivation of catalysts, in general

Introduced: January 1985

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1985.

Child Classifications

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B01J 2038/005 2nd only CPC only CPC only
B01J 38/02 Heat treatment since 1985 IPC+CPC Available in IPC and CPC
B01J 38/04 Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst since 1985 IPC+CPC Available in IPC and CPC
B01J 38/48 Liquid treating or treating in liquid phase, e.g. dissolved or suspended since 1985 +1 CPC IPC+CPC Available in IPC and CPC
B01J 38/72 including segregation of diverse particles since 1985 IPC+CPC Available in IPC and CPC
B01J 38/74 utilising ion-exchange since 1985 IPC+CPC Available in IPC and CPC

Class B01,2013–2023, worldwide · Source: EPO PATSTAT

Class B01,2013–2023, worldwide · Source: EPO PATSTAT