DIFF Subgroup
C30B 25/18 characterised by the substrate
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour deposition growth > Epitaxial-layer growth > characterised by the substrate
CPC:
Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth > Epitaxial-layer growth > characterised by the substrate
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- C30B 25/20 the substrate being of the same materials as the epitaxial layer since 1980 +1 CPC IPC+CPC Available in IPC and CPC