DIFF Subgroup
C03C 3/11 containing halogen or nitrogen
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Glass compositions > containing silica > with 40% to 90% silica by weight > containing halogen or nitrogen
CPC:
Glass compositions > containing silica > with 40% to 90% silica, by weight > containing halogen or nitrogen
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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