by chemical substances

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form > Treatment of tobacco products or tobacco substitutes > by chemical substances

CPC:

Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form (A24B3/00 takes precedence) > Treatment of tobacco products or tobacco substitutes > by chemical substances

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

3 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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A24B 15/281 +2 CPC CPC only CPC only
A24B 15/285 +1 CPC CPC only CPC only
A24B 15/287 +1 CPC CPC only CPC only
A24B 15/30 by organic substances since 1980 +4 CPC IPC+CPC Available in IPC and CPC
A24B 15/42 by organic and inorganic substances since 1980 IPC+CPC Available in IPC and CPC