DIFF Subgroup
H10F 77/12 Active materials
Introduced: January 2025
Full Title
Full titles differ between systems:
IPC:
Constructional details of devices covered by this subclass > Semiconductor bodies > Active materials
CPC:
Constructional details of devices covered by this subclass (constructional details of integrated devices, or assemblies of multiple devices, comprising at least one element in which radiation controls the flow of current H10F39/00) > Semiconductor bodies > Active materials
Of 7 combined children, 4 exist in both systems.
3 codes are CPC-only extensions.
IPC defines codes here since 2025.
Child Classifications
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- H10F 77/121 comprising only selenium or only tellurium since 2025 +1 CPC IPC+CPC Available in IPC and CPC
- H10F 77/123 comprising only Group II-VI materials, e.g. CdS, ZnS or HgCdTe since 2025 +2 CPC IPC+CPC Available in IPC and CPC
- H10F 77/124 comprising only Group III-V materials, e.g. GaAs since 2025 +3 CPC IPC+CPC Available in IPC and CPC