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PCE
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CPC Subgroup
C01B 32/318

characterised by the starting materials

Full Title

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

2 direct subcodes

Child Classifications

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  • C01B 32/324 from waste materials, e.g. tyres or spent sulfite pulp liquor
  • C01B 32/33 from distillation residues of coal or petroleum; from petroleum acid sludge