Wet etching

Introduced: January 2026

Full Title

Etching of wafers, substrates or parts of devices > Wet etching

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 2026.

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H10P 50/61 Electrolytic etching since 2026 +2 CPC IPC+CPC Available in IPC and CPC
H10P 50/64 of semiconductor materials since 2026 +1 CPC IPC+CPC Available in IPC and CPC
H10P 50/66 of conductive or resistive materials since 2026 +1 CPC IPC+CPC Available in IPC and CPC
H10P 50/68 of insulating materials since 2026 +1 CPC IPC+CPC Available in IPC and CPC