Patent Classification Explorer PCE

DIFF Main Group

C21B 9/00

Stoves for heating the blast in blast furnaces

Introduced: September 1968

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

Child Classifications

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C21B 9/02 Brick hot-blast stoves IPC+CPC Available in IPC and CPC
C21B 9/08 Iron hot-blast stoves IPC+CPC Available in IPC and CPC
C21B 9/10 Other details, e.g. blast mains IPC+CPC Available in IPC and CPC
C21B 9/14 Preheating the combustion air IPC+CPC Available in IPC and CPC
C21B 9/16 Cooling or drying the hot-blast IPC+CPC Available in IPC and CPC