CPC Subgroup
C01B 32/05 Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
Full Title
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30