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PCE
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DIFF Subgroup
C01B 32/318

characterised by the starting materials

Introduced: January 2017

Full Title

Full titles differ between systems:

IPC:

Carbon; Compounds thereof > Active carbon > Preparation > characterised by the starting materials

CPC:

Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Active carbon > Preparation > characterised by the starting materials

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 2017.

Child Classifications

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  • C01B 32/324 from waste materials, e.g. tyres or spent sulfite pulp liquor since 2017 IPC+CPC Available in IPC and CPC
  • C01B 32/33 from distillation residues of coal or petroleum; from petroleum acid sludge since 2017 IPC+CPC Available in IPC and CPC