having feed or discharge devices (B01D33/82 takes precedence)

Introduced: January 1990

Title

Titles differ between systems:

IPC: having feed or discharge devices

CPC: having feed or discharge devices (B01D33/82 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Filters with filtering elements which move during the filtering operation > having feed or discharge devices

CPC:

Filters with filtering elements which move during the filtering operation (filters comprising loose filtering material moving or fluidised during filtration B01D24/28 - B01D24/36; centrifuges B04B) > having feed or discharge devices (B01D33/82 takes precedence)

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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B01D 33/705 CPC only CPC only
B01D 33/72 for feeding since 1990 +3 CPC IPC+CPC Available in IPC and CPC
B01D 33/74 for discharging filtrate since 1990 +2 CPC IPC+CPC Available in IPC and CPC
B01D 33/76 for discharging the filter cake, e.g. chutes since 1990 +2 CPC IPC+CPC Available in IPC and CPC