C
CHEMISTRY; METALLURGY
C
CHEMISTRY; METALLURGY
C01
INORGANIC CHEMISTRY
C01
INORGANIC CHEMISTRY
C01B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B32/00
Carbon; Compounds thereof
C01B32/00
Carbon; Compounds thereof
C01B32/05
Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
C01B32/05
Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30