CPC Subgroup
C01B 32/354 After-treatment
Full Title
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Active carbon > After-treatment
5 direct subcodes
Child Classifications
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- C01B 32/36 Reactivation or regeneration
- C01B 32/372 Coating; Grafting; Microencapsulation
- C01B 32/378 Purification
- C01B 32/384 Granulation