CPC Subgroup
C01B 32/21 After-treatment
Full Title
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Graphite > After-treatment
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C01B 32/215 Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
- C01B 32/22 Intercalation
- C01B 32/23 Oxidation