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PCE
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DIFF Subgroup
B01D 39/20

of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires (porous ceramic material ; sintering metals C22C1/04; )

Introduced: September 1968

Title

Titles differ between systems:

IPC: of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires

CPC: of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires (porous ceramic material ; sintering metals C22C1/04; )

Full Title

Full titles differ between systems:

IPC:

Filtering material for liquid or gaseous fluids > Other self-supporting filtering material > of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires

CPC:

Filtering material for liquid or gaseous fluids > Other self-supporting filtering material > of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires (porous ceramic material ; sintering metals C22C1/04; )

Of 4 combined children, 0 exist in both systems.

4 codes are CPC-only extensions.

Child Classifications

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