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CPC Subgroup
H03C 1/08

by means of variable impedance element (H03C1/28 - H03C1/34, H03C1/46 - H03C1/52, H03C1/62 take precedence)

Full Title

Amplitude modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance element (H03C1/28 - H03C1/34, H03C1/46 - H03C1/52, H03C1/62 take precedence)

3 direct subcodes

Child Classifications

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  • H03C 1/10 the element being a current-dependent inductor
  • H03C 1/12 the element being a voltage-dependent capacitor
  • H03C 1/14 the element being a diode

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