DIFF Subgroup
C01B 32/312 Preparation
Introduced: January 2017
Full Title
Full titles differ between systems:
IPC:
Carbon; Compounds thereof > Active carbon > Preparation
CPC:
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Active carbon > Preparation
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
IPC defines codes here since 2017.
Child Classifications
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- C01B 32/342 characterised by non-gaseous activating agents since 2017 IPC+CPC Available in IPC and CPC