Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

Introduced: January 1985

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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C23C 22/02 using non-aqueous solutions since 1985 IPC+CPC Available in IPC and CPC
C23C 22/05 using aqueous solutions since 1990 IPC+CPC Available in IPC and CPC
C23C 22/70 using melts since 1985 IPC+CPC Available in IPC and CPC
C23C 22/73 characterised by the process since 1985 IPC+CPC Available in IPC and CPC
C23C 22/78 Pretreatment of the material to be coated since 1985 IPC+CPC Available in IPC and CPC
C23C 22/82 After-treatment since 1985 IPC+CPC Available in IPC and CPC
C23C 22/86 Regeneration of coating baths since 1985 IPC+CPC Available in IPC and CPC