Insulated-gate field-effect transistors [IGFET] (H10D30/40 takes precedence)

Introduced: January 2025

Title

Titles differ between systems:

IPC: Insulated-gate field-effect transistors [IGFET]

CPC: Insulated-gate field-effect transistors [IGFET] (H10D30/40 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Field-effect transistors [FET] > Insulated-gate field-effect transistors [IGFET]

CPC:

Field-effect transistors [FET] (insulated-gate bipolar transistors H10D12/00) > Insulated-gate field-effect transistors [IGFET] (H10D30/40 takes precedence)

CPC subdivides this area 2x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2025.

Child Classifications

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H10D 30/601 +3 CPC CPC only CPC only
H10D 30/611 +1 CPC CPC only CPC only
H10D 30/62 Fin field-effect transistors [FinFET] since 2025 +6 CPC IPC+CPC Available in IPC and CPC
H10D 30/63 Vertical IGFETs (H10D30/66 take precedence) since 2025 +1 CPC IPC+CPC Available in IPC and CPC
H10D 30/637 CPC only CPC only
H10D 30/64 Double-diffused metal-oxide semiconductor [DMOS] FETs since 2025 +1 CPC IPC+CPC Available in IPC and CPC
H10D 30/67 Thin-film transistors [TFT] since 2025 +6 CPC IPC+CPC Available in IPC and CPC
H10D 30/68 Floating-gate IGFETs since 2025 +5 CPC IPC+CPC Available in IPC and CPC
H10D 30/69 IGFETs having charge trapping gate insulators, e.g. MNOS transistors since 2025 +3 CPC IPC+CPC Available in IPC and CPC
H10D 30/701 CPC only CPC only
H10D 30/711 CPC only CPC only
H10D 30/721 CPC only CPC only
H10D 30/751 CPC only CPC only
H10D 30/791 +6 CPC CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class H10,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG DISPLAY KR 21,044
SAMSUNG ELECTRONICS COMPANY KR 14,774
LG DISPLAY COMPANY KR 9,454
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 8,301
SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 7,642
BOE TECHNOLOGY GROUP COMPANY 6,845
BOE TECHNOLOGY GROUP COMPANY CN 6,806
SAMSUNG DISPLAY 6,577
LG CHEM KR 5,461
SEMICONDUCTOR ENERGY LABORATORY COMPANY 5,115

Top Applicants (CPC)

Class H10,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG DISPLAY KR 38,446
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 30,922
SAMSUNG ELECTRONICS COMPANY KR 30,059
BOE TECHNOLOGY GROUP COMPANY CN 20,304
LG DISPLAY COMPANY KR 17,772
BOE TECHNOLOGY GROUP COMPANY 15,621
SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 13,629
IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 11,750
SAMSUNG DISPLAY 11,316
SEMICONDUCTOR ENERGY LABORATORY COMPANY 9,697