Filter circuits or combinations of filters with other separating devices

Introduced: January 1985

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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B01D 36/001 CPC only CPC only
B01D 36/003 +3 CPC CPC only CPC only
B01D 36/02 Combinations of filters of different kinds (B01D29/50, B01D33/35 take precedence) since 1985 IPC+CPC Available in IPC and CPC
B01D 36/04 Combinations of filters with settling tanks since 1985 +1 CPC IPC+CPC Available in IPC and CPC