CPC Subgroup
C01B 32/40 Carbon monoxide
Full Title
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Carbon monoxide
C01B 32/40 Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Carbon monoxide