Filter housing constructions

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups; Auxiliary devices for filtration; Filter housing constructions > Filter housing constructions

CPC:

Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions > Filter housing constructions

CPC subdivides this area 3x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

Navigate with arrow keys, Enter to open

B01D 35/301 +1 CPC CPC only CPC only
B01D 35/305 CPC only CPC only
B01D 35/306 CPC only CPC only
B01D 35/308 CPC only CPC only
B01D 35/31 including arrangements for environmental protection, e.g. pressure resisting features since 1990 IPC+CPC Available in IPC and CPC
B01D 35/34 open-topped (B01D35/31 takes precedence) since 1990 IPC+CPC Available in IPC and CPC