for cooling, or for removing solid constituents of, exhaust (by means of electric or electrostatic separators F01N3/01 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: for cooling, or for removing solid constituents of, exhaust

CPC: for cooling, or for removing solid constituents of, exhaust (by means of electric or electrostatic separators F01N3/01 )

Full Title

Full titles differ between systems:

IPC:

Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust > for cooling, or for removing solid constituents of, exhaust

CPC:

Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust (electric control F01N9/00; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00) > for cooling, or for removing solid constituents of, exhaust (by means of electric or electrostatic separators F01N3/01 )

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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F01N 3/0205 CPC only CPC only
F01N 3/021 by means of filters since 2000 +6 CPC IPC+CPC Available in IPC and CPC
F01N 3/037 by means of inertial or centrifugal separators, e.g. of cyclone type, optionally combined or associated with agglomerators since 2000 IPC+CPC Available in IPC and CPC
F01N 3/038 by means of perforated plates defining expansion chambers associated with condensation and collection chambers since 2000 IPC+CPC Available in IPC and CPC
F01N 3/04 using liquids +1 CPC IPC+CPC Available in IPC and CPC
F01N 3/05 by means of air, e.g. by mixing exhaust with air (silencers working by addition of air to exhaust F01N1/14; arrangements for the supply of additional air for the thermal or catalytic conversion of noxious components of exhaust F01N3/30) since 2000 +1 CPC IPC+CPC Available in IPC and CPC