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CPC Subgroup
H03D 1/14

by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)

Full Title

Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) > by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)

3 direct subcodes

Child Classifications

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  • H03D 1/16 of discharge tubes
  • H03D 1/18 of semiconductor devices
  • H03D 1/20 with provision for preventing undesired type of demodulation, e.g. preventing anode detection in a grid detection circuit

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