DIFF Subgroup
B01D 29/05 supported
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups; Filtering elements therefor > with flat filtering elements > supported
CPC:
Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor > with flat filtering elements (B01D29/39 takes precedence) > supported
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- B01D 29/07 with corrugated, folded or wound filtering sheets since 1990 +3 CPC IPC+CPC Available in IPC and CPC