of only insulated-gate FETs [IGFET]

Introduced: January 2025

Full Title

Full titles differ between systems:

IPC:

Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers > characterised by the integration of at least one component covered by groups or , e.g. integration of IGFETs > of only field-effect components > of only insulated-gate FETs [IGFET]

CPC:

Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers > characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs (H10D84/40 takes precedence) > of only field-effect components > of only insulated-gate FETs [IGFET]

CPC subdivides this area 7x more granularly than IPC with 12 additional codes.

12 codes are CPC-only extensions.

IPC defines codes here since 2025.

Child Classifications

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H10D 84/8311 CPC only CPC only
H10D 84/8312 CPC only CPC only
H10D 84/83125 CPC only CPC only
H10D 84/83135 CPC only CPC only
H10D 84/83138 CPC only CPC only
H10D 84/8314 CPC only CPC only
H10D 84/8316 CPC only CPC only
H10D 84/832 +1 CPC CPC only CPC only
H10D 84/834 CPC only CPC only
H10D 84/835 CPC only CPC only
H10D 84/836 CPC only CPC only
H10D 84/837 +1 CPC CPC only CPC only
H10D 84/84 Combinations of enhancement-mode IGFETs and depletion-mode IGFETs since 2025 IPC+CPC Available in IPC and CPC
H10D 84/85 Complementary IGFETs, e.g. CMOS since 2025 +7 CPC IPC+CPC Available in IPC and CPC