Generating pulses having essentially a finite slope or stepped portions

Introduced: September 1968

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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H03K 4/02 having stepped portions, e.g. staircase waveform +2 CPC IPC+CPC Available in IPC and CPC
H03K 4/04 having parabolic shape IPC+CPC Available in IPC and CPC
H03K 4/06 having triangular shape +2 CPC IPC+CPC Available in IPC and CPC
H03K 4/92 having a waveform comprising a portion of a sinusoid (generating sinusoidal oscillations H03B) since 1974 IPC+CPC Available in IPC and CPC
H03K 4/94 having trapezoidal shape since 1974 IPC+CPC Available in IPC and CPC

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

Class H03,2013–2023, worldwide · Source: EPO PATSTAT