Inorganic impregnating agents

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Impregnating wood, e.g. for protection > Inorganic impregnating agents

CPC:

Impregnating wood, (dyeing, staining B27K5/00) > Inorganic impregnating agents

Of 10 combined children, 8 exist in both systems.

2 codes are CPC-only extensions.

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B27K 3/163 CPC only CPC only
B27K 3/166 CPC only CPC only
B27K 3/18 Compounds of alkaline earth metals IPC+CPC Available in IPC and CPC
B27K 3/20 Compounds of alkali metals or ammonium IPC+CPC Available in IPC and CPC
B27K 3/22 Compounds of zinc or copper IPC+CPC Available in IPC and CPC
B27K 3/24 Compounds of mercury IPC+CPC Available in IPC and CPC
B27K 3/26 Compounds of iron, aluminium, or chromium IPC+CPC Available in IPC and CPC
B27K 3/28 Compounds of arsenic or antimony IPC+CPC Available in IPC and CPC
B27K 3/30 Compounds of fluorine IPC+CPC Available in IPC and CPC
B27K 3/32 Mixtures of different inorganic impregnating agents IPC+CPC Available in IPC and CPC

Class B27,2013–2023, worldwide · Source: EPO PATSTAT

Class B27,2013–2023, worldwide · Source: EPO PATSTAT