DIFF Subgroup
C01B 21/068 with silicon
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Nitrogen; Compounds thereof > Binary compounds of nitrogen with metals, with silicon, or with boron > with silicon
CPC:
Nitrogen; Compounds thereof > Binary compounds of nitrogen with metals, with silicon, or with boron, (azides C01B21/08) > with silicon
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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