Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
H03K 4/501

the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator

Full Title

Generating pulses having essentially a finite slope or stepped portions > having triangular shape > having sawtooth shape > using as active elements semiconductor devices (H03K4/787 - H03K4/84 take precedence) > in which a sawtooth voltage is produced across a capacitor > the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor, e.g. by a comparator

1 direct subcode

Child Classifications

Navigate with arrow keys, Enter to open

  • H03K 4/502 the capacitor being charged from a constant-current source

Top Applicants

Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 7,293
  2. QUALCOMM US 7,085
  3. MURATA MANUFACTURING COMPANY JP 5,982
  4. HUAWEI TECHNOLOGIES COMPANY CN 4,641
  5. INTEL CORPORATION US 3,863
  6. TEXAS INSTRUMENTS US 3,409
  7. MURATA MANUFACTURING COMPANY 2,874
  8. SK HYNIX KR 2,644
  9. SKYWORKS SOLUTIONS US 2,545
  10. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,437