Preparation by catalytic oxidation of ammonia

Introduced: September 1968

Full Title

Nitrogen; Compounds thereof > Nitrogen oxides; Oxyacids of nitrogen; Salts thereof > Nitric oxide (NO) > Preparation by catalytic oxidation of ammonia

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Child Classifications

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C01B 21/262 CPC only CPC only
C01B 21/265 CPC only CPC only
C01B 21/267 CPC only CPC only
C01B 21/28 Apparatus IPC+CPC Available in IPC and CPC