with translationally moving filtering elements, e.g. pistons (B01D33/04 - B01D33/327 take precedence)

Introduced: January 1990

Title

Titles differ between systems:

IPC: with translationally moving filtering elements, e.g. pistons

CPC: with translationally moving filtering elements, e.g. pistons (B01D33/04 - B01D33/327 take precedence)

Full Title

Full titles differ between systems:

IPC:

Filters with filtering elements which move during the filtering operation > with translationally moving filtering elements, e.g. pistons

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) > with translationally moving filtering elements, e.g. pistons (B01D33/04 - B01D33/327 take precedence)

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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B01D 33/0108 +2 CPC CPC only CPC only
B01D 33/015 +2 CPC CPC only CPC only
B01D 33/03 with vibrating filter elements since 1990 +2 CPC IPC+CPC Available in IPC and CPC