Preventing the formation of deposits or corrosion, e.g. by using filters

Introduced: September 1968

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

4 codes are CPC-only extensions.

Child Classifications

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F28F 19/002 CPC only CPC only
F28F 19/004 CPC only CPC only
F28F 19/006 CPC only CPC only
F28F 19/008 CPC only CPC only
F28F 19/01 by using means for separating solid materials from heat-exchange fluids, e.g. filters since 1995 IPC+CPC Available in IPC and CPC
F28F 19/02 by using coatings, e.g. vitreous or enamel coatings IPC+CPC Available in IPC and CPC